Pub Date : 2025-12-20DOI: 10.1016/j.jmst.2025.11.059
Chenglong Mou, Fu Wang, Zhengyu Liu, Lin Chen, Guangan Zhang
{"title":"Enhancing superlubricity of a-C:H films via trace sulfur incorporation: Microstructure-interface synergistic regulation mechanism","authors":"Chenglong Mou, Fu Wang, Zhengyu Liu, Lin Chen, Guangan Zhang","doi":"10.1016/j.jmst.2025.11.059","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.11.059","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"93 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-19DOI: 10.1016/j.jmst.2025.12.027
Y.D. Wang, F.C. Liu, Z.Y. Liu, P. Xue, L.H. Wu, H. Zhang, Z. Zhang, D.R. Ni, B.L. Xiao, Z.Y. Ma
{"title":"Microstructure evolution in aluminum matrix nanocomposites and aluminum alloys throughout whole process of additive friction extrusion deposition","authors":"Y.D. Wang, F.C. Liu, Z.Y. Liu, P. Xue, L.H. Wu, H. Zhang, Z. Zhang, D.R. Ni, B.L. Xiao, Z.Y. Ma","doi":"10.1016/j.jmst.2025.12.027","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.027","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"18 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-19DOI: 10.1016/j.jmst.2025.12.025
Xing Zhang, Lei Zhou, Jun Yang, Junjie Li, Mu Lan, Yilei Li, Zitao Shi, Wenjuan Wu, Bin Tang, Hongyu Yang, Lezhong Li
{"title":"Revealing loss mechanisms through interpretable machine learning and accelerated discovery of ultra-low-loss dielectric ceramics in the Li2TiO3-Li3NbO4-MgO system","authors":"Xing Zhang, Lei Zhou, Jun Yang, Junjie Li, Mu Lan, Yilei Li, Zitao Shi, Wenjuan Wu, Bin Tang, Hongyu Yang, Lezhong Li","doi":"10.1016/j.jmst.2025.12.025","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.025","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"26 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ni-based wrought superalloys exhibit pronounced temperature-dependent plasticity fluctuations, particularly manifesting as a plasticity trough within their service temperature range. This phenomenon critically impacts alloy design and performance reliability. While prior studies have established grain boundary (GB) crack initiation as a key driver of plasticity loss, the temperature-dependent GB deformation response remains poorly understood. To address this gap, in situ tensile testing coupled with advanced microscopy was conducted at room temperature, 750°C, and 950°C, incorporating grain size and environmental atmosphere effects. At 750°C, GB crack nucleation is governed by slip system misalignment (quantified via the Luster-Morris factor, m′), with low m′ GBs acting as preferential crack initiation sites. The vacuum environment suppresses the surface GB oxidation behavior, which helps to maintain the stability of necking behavior and improve intermediate temperature plasticity. Plasticity recovery at 950°C correlates with dynamic recrystallization mechanisms, where local lattice rotation near GBs facilitates strain accommodation. Furthermore, coarse-grained structures exhibit inferior intermediate-temperature plasticity compared to fine-grained counterparts due to reduced crack propagation resistance and slip-plane intersection-induced cleavage failure. These findings provide valuable insights for optimizing GB design to mitigate plasticity fluctuations, enhancing the reliability of Ni-based superalloys in high-temperature applications.
{"title":"Temperature-driven plasticity fluctuations mechanism and grain boundary deformation response of Ni-based wrought superalloy","authors":"Yingbo Bai, Rui Zhang, Chuanyong Cui, Zijian Zhou, Xipeng Tao, Yizhou Zhou","doi":"10.1016/j.jmst.2025.12.024","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.024","url":null,"abstract":"Ni-based wrought superalloys exhibit pronounced temperature-dependent plasticity fluctuations, particularly manifesting as a plasticity trough within their service temperature range. This phenomenon critically impacts alloy design and performance reliability. While prior studies have established grain boundary (GB) crack initiation as a key driver of plasticity loss, the temperature-dependent GB deformation response remains poorly understood. To address this gap, in situ tensile testing coupled with advanced microscopy was conducted at room temperature, 750°C, and 950°C, incorporating grain size and environmental atmosphere effects. At 750°C, GB crack nucleation is governed by slip system misalignment (quantified via the Luster-Morris factor, <em>m</em>′), with low <em>m</em>′ GBs acting as preferential crack initiation sites. The vacuum environment suppresses the surface GB oxidation behavior, which helps to maintain the stability of necking behavior and improve intermediate temperature plasticity. Plasticity recovery at 950°C correlates with dynamic recrystallization mechanisms, where local lattice rotation near GBs facilitates strain accommodation. Furthermore, coarse-grained structures exhibit inferior intermediate-temperature plasticity compared to fine-grained counterparts due to reduced crack propagation resistance and slip-plane intersection-induced cleavage failure. These findings provide valuable insights for optimizing GB design to mitigate plasticity fluctuations, enhancing the reliability of Ni-based superalloys in high-temperature applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mg-Ca alloys are very promising materials for orthopedic applications owing to the beneficial role of Ca in promoting bone formation. However, they are susceptible to corrosion, especially for the localized corrosion caused by the presence of coarse Mg2Ca second phase. Here, single-phased Mg-Ca alloys fabricated through a unique high-pressure heat treatment were proposed to solve the issue. Through a proper high-pressure solid solution (HPSS) treatment, the maximum solubility of Ca in Mg can be improved to 1 wt.% under the pressure of 4 GPa and above the temperature of 750°C, which can’t be achieved through traditional solid solution treatment. Compared to the untreated ones, galvanic corrosion between different phases (Mg and Mg2Ca) was basically avoided in the Ca supersaturated Mg-1Ca alloy (single-phased). Along with corrosion, a high content of Ca released from the matrix tended to redeposit at the corroded surface and combined with O, P, and C, forming an intact Ca/P/O/C-rich layer, which mainly consisted of CaCO3, Ca3(PO4)2, and Ca(OH)2. The rapid formation of this intact layer provided an extra shielding effect for the beneath matrix, thus significantly improving corrosion resistance and biocompatibility. On the whole, a uniform corrosion mode was achieved with a 16-fold reduction in corrosion rate, from 1.83 mm/year in bi-phased ones to 0.11 mm/year in single-phased ones. This work provides a feasible approach to fabricate single-phased alloys containing alloying elements with no or limited solid solubility, pursuing better corrosion and biocompatibility performances.
{"title":"Single-phased Mg-Ca alloys fabricated via high-pressure heat treatment for better biodegradability and biocompatibility","authors":"Qinggong Jia, Zhipei Tong, Qianying Jia, He Huang, Shijie Zhu, Zhuangfei Zhang, Yoji Mine, Kazuki Takashima, Shaokang Guan, Dong Bian, Yufeng Zheng","doi":"10.1016/j.jmst.2025.12.022","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.022","url":null,"abstract":"Mg-Ca alloys are very promising materials for orthopedic applications owing to the beneficial role of Ca in promoting bone formation. However, they are susceptible to corrosion, especially for the localized corrosion caused by the presence of coarse Mg<sub>2</sub>Ca second phase. Here, single-phased Mg-Ca alloys fabricated through a unique high-pressure heat treatment were proposed to solve the issue. Through a proper high-pressure solid solution (HPSS) treatment, the maximum solubility of Ca in Mg can be improved to 1 wt.% under the pressure of 4 GPa and above the temperature of 750°C, which can’t be achieved through traditional solid solution treatment. Compared to the untreated ones, galvanic corrosion between different phases (Mg and Mg<sub>2</sub>Ca) was basically avoided in the Ca supersaturated Mg-1Ca alloy (single-phased). Along with corrosion, a high content of Ca released from the matrix tended to redeposit at the corroded surface and combined with O, P, and C, forming an intact Ca/P/O/C-rich layer, which mainly consisted of CaCO<sub>3</sub>, Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>, and Ca(OH)<sub>2</sub>. The rapid formation of this intact layer provided an extra shielding effect for the beneath matrix, thus significantly improving corrosion resistance and biocompatibility. On the whole, a uniform corrosion mode was achieved with a 16-fold reduction in corrosion rate, from 1.83 mm/year in bi-phased ones to 0.11 mm/year in single-phased ones. This work provides a feasible approach to fabricate single-phased alloys containing alloying elements with no or limited solid solubility, pursuing better corrosion and biocompatibility performances.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"153 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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