Materials & Design最新文献

英文中文

Artificial intelligence artificial muscle of dielectric elastomers

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-04 DOI: 10.1016/j.matdes.2025.113691

Dongyang Huang , Jiaxuan Ma , Yubing Han , Chang Xue , Mengying Zhang , Weijia Wen , Sheng Sun , Jinbo Wu

Artificial muscles (AMs), which encompass materials or devices capable of replicating the functions of natural muscles, have garnered significant attention in recent years, driven by the advent of various materials (advanced hydrogels, pneumatic AMs, dielectric elastomers, etc.) that exhibit exceptional properties and devices that demonstrate remarkable performance. The immense potential of AMs spans numerous industries and aspects of daily life, necessitating accelerated research efforts to meet the increasing demand. This article focuses on dielectric responsive elastomers, which are key materials within the field of AMs, highlighting advancements in theory, materials, and devices. To expedite the research and development of dielectric elastomer AM materials and beyond, we propose leveraging artificial intelligence tools to transform the artificial intelligence muscle research paradigm. Establishing an AM material database is highly valuable, as seemingly minor material data can be correlated with descriptors and target values via machine learning. Through material data mining integrating materials science and data science, we can predict potential breakthroughs in AM materials. A data-driven experimental research approach significantly reduces the number of experiments required for AM development, leading to cost savings and increased research efficiency.

{"title":"Artificial intelligence artificial muscle of dielectric elastomers","authors":"Dongyang Huang , Jiaxuan Ma , Yubing Han , Chang Xue , Mengying Zhang , Weijia Wen , Sheng Sun , Jinbo Wu","doi":"10.1016/j.matdes.2025.113691","DOIUrl":"10.1016/j.matdes.2025.113691","url":null,"abstract":"<div><div>Artificial muscles (AMs), which encompass materials or devices capable of replicating the functions of natural muscles, have garnered significant attention in recent years, driven by the advent of various materials (advanced hydrogels, pneumatic AMs, dielectric elastomers, etc.) that exhibit exceptional properties and devices that demonstrate remarkable performance. The immense potential of AMs spans numerous industries and aspects of daily life, necessitating accelerated research efforts to meet the increasing demand. This article focuses on dielectric responsive elastomers, which are key materials within the field of AMs, highlighting advancements in theory, materials, and devices. To expedite the research and development of dielectric elastomer AM materials and beyond, we propose leveraging artificial intelligence tools to transform the artificial intelligence muscle research paradigm. Establishing an AM material database is highly valuable, as seemingly minor material data can be correlated with descriptors and target values via machine learning. Through material data mining integrating materials science and data science, we can predict potential breakthroughs in AM materials. A data-driven experimental research approach significantly reduces the number of experiments required for AM development, leading to cost savings and increased research efficiency.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"251 ","pages":"Article 113691"},"PeriodicalIF":7.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantification of solution annealing effects on microstructure and property in a laser powder bed fusion 316H stainless steel

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-04 DOI: 10.1016/j.matdes.2025.113692

Lin Gao, Srinivas Aditya Mantri, Xuan Zhang

Solution annealing (SA) is an effective way to mitigate microstructural heterogeneity and to optimize mechanical performance of alloys manufactured by laser powder bed fusion (LPBF). In this study, a comprehensive and quantitative understanding of the recovery and recrystallization processes in the SA temperature range of LPBF 316H stainless steel is provided using results from analytical electron microscopy and in-situ high-energy synchrotron x-ray scattering. The profound effect of dislocation structures and secondary phase particles on mechanical performance, particularly under tension and creep conditions, is rationalized using deformation models that incorporate microstructural inputs. This study, for the first time, quantifies the broad effect of nano oxide inclusions on dislocation recovery kinetics, on grain growth and recrystallization kinetics, and on tension strength and creep resistance. The fundamental differences between the LPBF and the conventional wrought materials are revealed. The findings address critical questions in post-build processing of AM materials and pave the way for their rapid qualification for high temperature applications.

{"title":"Quantification of solution annealing effects on microstructure and property in a laser powder bed fusion 316H stainless steel","authors":"Lin Gao, Srinivas Aditya Mantri, Xuan Zhang","doi":"10.1016/j.matdes.2025.113692","DOIUrl":"10.1016/j.matdes.2025.113692","url":null,"abstract":"<div><div>Solution annealing (SA) is an effective way to mitigate microstructural heterogeneity and to optimize mechanical performance of alloys manufactured by laser powder bed fusion (LPBF). In this study, a comprehensive and quantitative understanding of the recovery and recrystallization processes in the SA temperature range of LPBF 316H stainless steel is provided using results from analytical electron microscopy and <em>in-situ</em> high-energy synchrotron x-ray scattering. The profound effect of dislocation structures and secondary phase particles on mechanical performance, particularly under tension and creep conditions, is rationalized using deformation models that incorporate microstructural inputs. This study, for the first time, quantifies the broad effect of nano oxide inclusions on dislocation recovery kinetics, on grain growth and recrystallization kinetics, and on tension strength and creep resistance. The fundamental differences between the LPBF and the conventional wrought materials are revealed. The findings address critical questions in post-build processing of AM materials and pave the way for their rapid qualification for high temperature applications.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"251 ","pages":"Article 113692"},"PeriodicalIF":7.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructures and mechanical properties of a 30CrNi2MoV steel/GH4098 joint produced by hot-compression bonding

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-04 DOI: 10.1016/j.matdes.2025.113693

Shengqing Wu , Sheng Liu , Hexin Wang , Shaofei Ren , Bin Xu , Xiaopeng Zhang , Mingyue Sun

This study elucidates the microstructures and mechanical properties of a 30CrNi2MoV steel/GH4098 joint produced via hot-compression bonding (HCB). Owing to the mutual diffusion of GH4098 and 30CrNi2MoV, the bonding interface becomes an interface band where Al₂O₃/Ti(C, N) is distributed on the side near GH4098 and Ti(C, N)/M₂₃C₆ is distributed on the side near 30CrNi2MoV. A transition layer occurs between the interface band and 30CrNi2MoV due to the diffusion of austenite stabilization elements dominated by Ni from GH4098 to 30CrNi2MoV. As the hot compression temperature increases, oxides and carbides are thermally dissolved into the matrix and Al₂O₃ transitions from its δ phase to α phase. As the strain increases, the bonding interface bugles and the interfacial oxide layer is destroyed. The highest interfacial bonding strength is obtained under conditions associated with high temperatures and large deformation.

引用次数: 0

Dual phase reinforced CuCrZr alloy: Synergistic improvement of mechanical properties and corrosion resistance via metallic glass and rare earth oxides

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-03 DOI: 10.1016/j.matdes.2025.113686

Jie Chen , Weizong Bao , Hongmei Chen , Ning Ding , Xinxin Yang , Bohua Yu , Tao Hong , Zeyun Cai , Guoqiang Xie

The interfacial adhesion plays a key role in the mechanical, electrical and corrosion properties of composites. For the high strength-conductive CuCrZr/CuZrAl metallic glass composites, the interface between the two phases suffered from excessive oxide film due to the strong affinity to oxygen of the Zr element. The rare earth particles Sc/Y are introduced into CuCrZr-30 wt% CuZrAl metallic glass composites to control the interface oxide layer and promote the properties of the composites. The incorporated Sc/Y particles trigger significant grain refinement effect in the CuCrZr matrix, which is enhanced with the increasing Sc/Y content. Sc particles offers a more pronounced grain refinement effect compared to the Y particles, yielding a more positive impact on the strength of the composites. With 1.5 wt% Sc added, the strength of the composites reaches up to 1180 MPa, while maintaining 24.8 % IACS. Moreover, the in-situ generation of rare earth oxides (Sc₂O₃/Y₂O₃) effectively enhances the interface bonding between the CuZrAl metallic glass and the CuCrZr matrix, improving the corrosion resistance of composites. This suggests a viable approach to construct dual-phase multiscale structure in the Cu-based composites with optimized interfaces and multiple strengthening effect.

{"title":"Dual phase reinforced CuCrZr alloy: Synergistic improvement of mechanical properties and corrosion resistance via metallic glass and rare earth oxides","authors":"Jie Chen , Weizong Bao , Hongmei Chen , Ning Ding , Xinxin Yang , Bohua Yu , Tao Hong , Zeyun Cai , Guoqiang Xie","doi":"10.1016/j.matdes.2025.113686","DOIUrl":"10.1016/j.matdes.2025.113686","url":null,"abstract":"<div><div>The interfacial adhesion plays a key role in the mechanical, electrical and corrosion properties of composites. For the high strength-conductive CuCrZr/CuZrAl metallic glass composites, the interface between the two phases suffered from excessive oxide film due to the strong affinity to oxygen of the Zr element. The rare earth particles Sc/Y are introduced into CuCrZr-30 wt% CuZrAl metallic glass composites to control the interface oxide layer and promote the properties of the composites. The incorporated Sc/Y particles trigger significant grain refinement effect in the CuCrZr matrix, which is enhanced with the increasing Sc/Y content. Sc particles offers a more pronounced grain refinement effect compared to the Y particles, yielding a more positive impact on the strength of the composites. With 1.5 wt% Sc added, the strength of the composites reaches up to 1180 MPa, while maintaining 24.8 % IACS. Moreover, the in-situ generation of rare earth oxides (Sc<sub>2</sub>O<sub>3</sub>/Y<sub>2</sub>O<sub>3</sub>) effectively enhances the interface bonding between the CuZrAl metallic glass and the CuCrZr matrix, improving the corrosion resistance of composites. This suggests a viable approach to construct dual-phase multiscale structure in the Cu-based composites with optimized interfaces and multiple strengthening effect.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"251 ","pages":"Article 113686"},"PeriodicalIF":7.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Moisture stability enhancement of open-graded friction courses filling with oil shale waste based on interface linkage modification

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-02 DOI: 10.1016/j.matdes.2025.113684

Yingsong Li , Wei Guo , Xiaoming Huang , Zeqi Chen , Ziyue Zhou , Ying Gao

Oil shale waste (OSW), exhibits a high moisture absorption, which poses a potential moisture damage when filled in asphalt pavement. This study aims to enhance the moisture stability of Open-Graded Friction Courses (OGFC) filling with OSW based on the interface linkage of silane coupling agent (SCA). The moisture sensitivity test showed that the SCA effectively improved the moisture stability of OGFC filling with OSW. After linkage modification, its immersion Marshall stability and spring-thawing Marshall stability increased by about 36 % and 20 %, respectively. Dynamic shear rheometer test exhibited that SCA modified OSW asphalt mortar had the lowest complex modulus aging index of 1.12 %, which indicated that SCA inhibits the water intrusion. The consolidation of asphalt- SCA- OSW interface was 24.32 % higher than that of asphalt- OSW interface after 48 h immersion. After linkage modification, the adhesion rate between OSW and asphalt increased by 14.1 %, the surface energy of OSW decreased by 32.83 %, and the polar component decreased by 85.53 %. Molecular simulation experiments showed that the SCA could increase the adhesion energy between asphalt and OSW under wet condition by 34.5 %. The research findings can expand the application scenarios of OSW in pavement construction and diversify the methods for its utilization.

{"title":"Moisture stability enhancement of open-graded friction courses filling with oil shale waste based on interface linkage modification","authors":"Yingsong Li , Wei Guo , Xiaoming Huang , Zeqi Chen , Ziyue Zhou , Ying Gao","doi":"10.1016/j.matdes.2025.113684","DOIUrl":"10.1016/j.matdes.2025.113684","url":null,"abstract":"<div><div>Oil shale waste (OSW), exhibits a high moisture absorption, which poses a potential moisture damage when filled in asphalt pavement. This study aims to enhance the moisture stability of Open-Graded Friction Courses (OGFC) filling with OSW based on the interface linkage of silane coupling agent (SCA). The moisture sensitivity test showed that the SCA effectively improved the moisture stability of OGFC filling with OSW. After linkage modification, its immersion Marshall stability and spring-thawing Marshall stability increased by about 36 % and 20 %, respectively. Dynamic shear rheometer test exhibited that SCA modified OSW asphalt mortar had the lowest complex modulus aging index of 1.12 %, which indicated that SCA inhibits the water intrusion. The consolidation of asphalt- SCA- OSW interface was 24.32 % higher than that of asphalt- OSW interface after 48 h immersion. After linkage modification, the adhesion rate between OSW and asphalt increased by 14.1 %, the surface energy of OSW decreased by 32.83 %, and the polar component decreased by 85.53 %. Molecular simulation experiments showed that the SCA could increase the adhesion energy between asphalt and OSW under wet condition by 34.5 %. The research findings can expand the application scenarios of OSW in pavement construction and diversify the methods for its utilization.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"251 ","pages":"Article 113684"},"PeriodicalIF":7.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143223199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low thermal expansion in conjunction with improved mechanical properties achieved in Mg-Gd solid solutions

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-02 DOI: 10.1016/j.matdes.2025.113685

Cuihong Wang , Zhihua Dong , Bin Jiang , Lei Wang , Zhiying Zheng , Ang Zhang , Jiangfeng Song , Dingfei Zhang , Levente Vitos

Addition of Gd with relatively large solubility is demonstrated to significantly reduce the coefficient of thermal expansion (CTE), while improving obviously the mechanical properties of Mg matrix. A good combination of low CTE, high strength and ductility is obtained at Gd content of ∼ 10.6 wt%. According to first-principle predictions for Mg-Gd solid solutions, the decreased CTE upon alloying with Gd is predominately determined by the reduction of lattice vibrational contribution. This reduction emerges basically from the weakened anharmonic effect, which is represented by the decreased Grüneisen parameter. The refined grain size and solution of Gd in bulk matrix predominate the increased strength of Mg-Gd alloys. The segregation of Gd at grain boundary is found to yield important impact on the refined grain size. Furthermore, while the obvious reduction of ductility at relatively high Gd contents is related to the precipitation of coarse Mg₅Gd phase, the high ductility achieved at relatively low Gd contents is closely correlated with the activation of non-basal slips. It emerges fundamentally from the varied influence of Gd on the unstable stacking fault energy of basal and non-basal slips. The present advances enhance the understanding of designing innovative Mg alloys with tunable thermal expansion and mechanical properties.

{"title":"Low thermal expansion in conjunction with improved mechanical properties achieved in Mg-Gd solid solutions","authors":"Cuihong Wang , Zhihua Dong , Bin Jiang , Lei Wang , Zhiying Zheng , Ang Zhang , Jiangfeng Song , Dingfei Zhang , Levente Vitos","doi":"10.1016/j.matdes.2025.113685","DOIUrl":"10.1016/j.matdes.2025.113685","url":null,"abstract":"<div><div>Addition of Gd with relatively large solubility is demonstrated to significantly reduce the coefficient of thermal expansion (CTE), while improving obviously the mechanical properties of Mg matrix. A good combination of low CTE, high strength and ductility is obtained at Gd content of ∼ 10.6 wt%. According to first-principle predictions for Mg-Gd solid solutions, the decreased CTE upon alloying with Gd is predominately determined by the reduction of lattice vibrational contribution. This reduction emerges basically from the weakened anharmonic effect, which is represented by the decreased Grüneisen parameter. The refined grain size and solution of Gd in bulk matrix predominate the increased strength of Mg-Gd alloys. The segregation of Gd at grain boundary is found to yield important impact on the refined grain size. Furthermore, while the obvious reduction of ductility at relatively high Gd contents is related to the precipitation of coarse Mg<sub>5</sub>Gd phase, the high ductility achieved at relatively low Gd contents is closely correlated with the activation of non-basal slips. It emerges fundamentally from the varied influence of Gd on the unstable stacking fault energy of basal and non-basal slips. The present advances enhance the understanding of designing innovative Mg alloys with tunable thermal expansion and mechanical properties.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"251 ","pages":"Article 113685"},"PeriodicalIF":7.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143223198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical properties and microstructure of wire laser metal deposited austenitic stainless steel

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-01 DOI: 10.1016/j.matdes.2024.113558

P. Kyvelou , W. Hong , R. Zhang , L. Gardner

Laser metal deposition (LMD) is a metal 3D printing method that enables the efficient and cost-effective production of large-scale components, rendering it increasingly attractive for civil engineering applications. However, the scarcity of data and lack of knowledge of the material response and geometric variability of LMD steels is inhibiting adoption of this manufacturing method in the construction industry. To address this, a comprehensive experimental investigation into the geometry, mechanical properties and microstructural characteristics of LMD plates made from ER 308LSi stainless steel has been carried out and is presented herein. Laser scanning, tensile testing and microstructural analyses were conducted on a series of coupons of different thicknesses (2 mm and 8 mm), printing strategies, surface conditions and orientations. The results indicated low geometric irregularity, with both as-built and machined coupons displaying nearly identical mechanical properties. The thinner specimens had lower strengths, mainly attributed to their larger grain sizes. Significant anisotropy was observed from the mechanical tests on the thinner specimens, explained by a strong crystallographic texture observed in the microstructure. Overall, the examined material exhibited good mechanical behaviour and geometric consistency. Finally, a constitutive modelling approach previously applied to wire arc additively manufactured (WAAM) stainless steel was successfully adapted to characterise the anisotropic behaviour of LMD stainless steel in both the elastic and inelastic material ranges. The findings highlight the potential for using LMD in construction, offering a viable means of fabricating large-scale metal components with sound mechanical performance.

{"title":"Mechanical properties and microstructure of wire laser metal deposited austenitic stainless steel","authors":"P. Kyvelou , W. Hong , R. Zhang , L. Gardner","doi":"10.1016/j.matdes.2024.113558","DOIUrl":"10.1016/j.matdes.2024.113558","url":null,"abstract":"<div><div>Laser metal deposition (LMD) is a metal 3D printing method that enables the efficient and cost-effective production of large-scale components, rendering it increasingly attractive for civil engineering applications. However, the scarcity of data and lack of knowledge of the material response and geometric variability of LMD steels is inhibiting adoption of this manufacturing method in the construction industry. To address this, a comprehensive experimental investigation into the geometry, mechanical properties and microstructural characteristics of LMD plates made from ER 308LSi stainless steel has been carried out and is presented herein. Laser scanning, tensile testing and microstructural analyses were conducted on a series of coupons of different thicknesses (2 mm and 8 mm), printing strategies, surface conditions and orientations. The results indicated low geometric irregularity, with both as-built and machined coupons displaying nearly identical mechanical properties. The thinner specimens had lower strengths, mainly attributed to their larger grain sizes. Significant anisotropy was observed from the mechanical tests on the thinner specimens, explained by a strong crystallographic texture observed in the microstructure. Overall, the examined material exhibited good mechanical behaviour and geometric consistency. Finally, a constitutive modelling approach previously applied to wire arc additively manufactured (WAAM) stainless steel was successfully adapted to characterise the anisotropic behaviour of LMD stainless steel in both the elastic and inelastic material ranges. The findings highlight the potential for using LMD in construction, offering a viable means of fabricating large-scale metal components with sound mechanical performance.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"250 ","pages":"Article 113558"},"PeriodicalIF":7.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid regulation for the enhanced mechanical properties of laser powder bed fused AlSi10Mg alloy: Remelting with laser shock-based SiC implantation

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-01 DOI: 10.1016/j.matdes.2025.113626

Jiantao Zhou , Xiao Yang , Wei Shen , Gai Wu , Fang Dong

Laser powder bed fusion (LPBF) has been one of the most widely used additive manufacturing (AM) technologies. However, the LPBF-built AlSi10Mg alloy is still restricted by the mechanical performance. In this work, a hybrid laser regulation method combining in-situ laser remelting (LSR) and ex-situ laser shock-based SiC implantation (LSI-SiC) was proposed. The experiments demonstrated that the compressive residual stress with the value of 72 MPa was obtained with weaken surface flatness after hybrid laser regulation. Nanoscale grains were presented with obvious dislocation tangle. The high tensile strength (492 MPa) was achieved while maintaining good ductility (4.5 %) attributed to various strengthening effects. The numerical results showed that the dislocation and atomic stress were more sensitive for the size and shape of nanoscale SiC. This work provides a novel guidance for simultaneously enhancing the strength and ductility of AlSi10Mg alloy via effectively combining in-situ and ex-situ laser regulation.

引用次数: 0

A theoretical method to analyze the effect of stress distribution on compressive strength of periodic lattices

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-01 DOI: 10.1016/j.matdes.2024.113580

Zulei Liang , Yansong Meng , Jiaxi Zhao , Zhanggang Sun , Yanhua Guo , Jie Xia , Hui Chang , Lian Zhou , I.V. Alexandrov

The lattice structures or lattice metamaterials have been widely used in aerospace and medical fields, and the mechanical properties were mostly evaluated based on simulated stress distribution. However, the evaluation of stress distribution of lattice structures often relies on personal experience and lacks quantitative analysis methods. In this study, a theoretical method to quantitatively analyze the relationship between compressive strength of periodic lattices and the simulated stress distribution is proposed. The methodology is based on the periodic stress distribution of periodic lattices, to derive the formulas of structural efficiency and stress concentration coefficient. Then, we discovered that lattice strength is determined by the product of structural efficiency, stress concentration coefficient, relative density, and material strength. In this derivation, the characteristic parameters related to stress distribution are introduced into the formula for lattice strength for the first time. Finally, the theoretical method has been used to analyze the effects of structure parameters, including strut diameter, cell size, and cell pose, on stress distribution and mechanical properties in periodic lattices. The results demonstrate the formula of lattice strength is applicable to analyze the effects of stress distribution.

{"title":"A theoretical method to analyze the effect of stress distribution on compressive strength of periodic lattices","authors":"Zulei Liang , Yansong Meng , Jiaxi Zhao , Zhanggang Sun , Yanhua Guo , Jie Xia , Hui Chang , Lian Zhou , I.V. Alexandrov","doi":"10.1016/j.matdes.2024.113580","DOIUrl":"10.1016/j.matdes.2024.113580","url":null,"abstract":"<div><div>The lattice structures or lattice metamaterials have been widely used in aerospace and medical fields, and the mechanical properties were mostly evaluated based on simulated stress distribution. However, the evaluation of stress distribution of lattice structures often relies on personal experience and lacks quantitative analysis methods. In this study, a theoretical method to quantitatively analyze the relationship between compressive strength of periodic lattices and the simulated stress distribution is proposed. The methodology is based on the periodic stress distribution of periodic lattices, to derive the formulas of structural efficiency and stress concentration coefficient. Then, we discovered that lattice strength is determined by the product of structural efficiency, stress concentration coefficient, relative density, and material strength. In this derivation, the characteristic parameters related to stress distribution are introduced into the formula for lattice strength for the first time. Finally, the theoretical method has been used to analyze the effects of structure parameters, including strut diameter, cell size, and cell pose, on stress distribution and mechanical properties in periodic lattices. The results demonstrate the formula of lattice strength is applicable to analyze the effects of stress distribution.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"250 ","pages":"Article 113580"},"PeriodicalIF":7.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the effects of sintering additives and heating regimes on the performances of glass–ceramic proppants derived from industrial wastes

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-02-01 DOI: 10.1016/j.matdes.2025.113634

Jincai Zhang , Yueting Fan , Xubo Zhai , Vishnu Vijay Kumar

This article aims to explore a simple and effective method of preparation industry solid waste based ceramic proppant and elucidate the sintering mechanism for prompting further study in the future. Glass-ceramic-based proppants were successfully fabricated using fly ash and kaolin, as main raw, matching other raws and additive such as TiO₂ and Fe₂O_3, in lab. The results showed that the proppants had the optimum overall performances when the total content of SiO₂ and Al₂O₃ was at 85 %, their molar ratio was 1, with a sintering temperature of 1250℃. The heating rate and the holding time were 2.5℃/min and 90 min, respectively, with the addition of 3 % TiO₂ and 5 % Fe₂O₃. The cylinder compressive strength of the samples increased 73.33 % by following step-by-step optimizations than origin sample. Furthermore, the sintering mechanism was elucidated and all possible chemical reaction were explored at the high temperature sintering process. The additives such as TiO₂ and Fe₂O₃ prompt the crystal melting and amorphous as well as mullite formation, which made raw solid particle set change into a glass–ceramic-based whole body. New finding indicates the new phase formation and their content inside proppant body have an important contribution to the enhance of the cylinder compressive strength.

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