Pub Date : 2024-11-28DOI: 10.1016/j.matlet.2024.137795
S. Gejendhiran , A. Karpagaraj , S. Baskaran , R. Prithivirajan , D. Aravindhan , A.G. Karthikeyan
In this research, the sinewave weaving technique is used by the Cold Metal Transfer process for hard-facing the Inconel 718 over the Stainless Steel 304. A microstructural study exhibited columnar grains that were transformed into equiaxed grains. Scanning Electron Microscopy (SEM) – Energy Dispersive X-ray analysis (EDX) results confirm the element’s segregation and secondary phase’s formation. Outcomes of hardness, tensile, impact measurements, and wear analysis show that a hard-faced layer offers better hardness and wear resistance.
{"title":"Experimental studies on dilution, microstructural, mechanical and wear characteristics of Inconel 718 deposited over stainless steel 304 employing cold metal transfer process","authors":"S. Gejendhiran , A. Karpagaraj , S. Baskaran , R. Prithivirajan , D. Aravindhan , A.G. Karthikeyan","doi":"10.1016/j.matlet.2024.137795","DOIUrl":"10.1016/j.matlet.2024.137795","url":null,"abstract":"<div><div>In this research, the sinewave weaving technique is used by the Cold Metal Transfer process for hard-facing the Inconel 718 over the Stainless Steel 304. A microstructural study exhibited columnar grains that were transformed into equiaxed grains. Scanning Electron Microscopy (SEM) – Energy Dispersive X-ray analysis (EDX) results confirm the element’s segregation and secondary phase’s formation. Outcomes of hardness, tensile, impact measurements, and wear analysis show that a hard-faced layer offers better hardness and wear resistance.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137795"},"PeriodicalIF":2.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-28DOI: 10.1016/j.matlet.2024.137796
Jong Min Park, Seungki Jo, Soo-ho Jung, Jinhee Bae, Linh Ba Vu, Jihun Yu, Kyung Tae Kim
MnSb alloys are promising candidates for thermally stable magnetic materials in spintronic devices due to their high Curie temperature. When alloyed with transition metals, they hold potential as thermoelectric materials by adopting a half-Heusler structure. Among the few 3d transition metal-based compounds, CuMnSb alloys exhibit antiferromagnetic properties along with thermoelectric behavior. In this study, the CuMnSb alloy was synthesized using arc-melting, followed by powdering and spark plasma sintering. The thermoelectric properties were characterized in a temperature range of 298–673 K. The results indicate a significant improvement in the thermoelectric figure-of-merit (zT) of CuMnSb compared to MnSb, attributed to the increased power factor and reduced thermal conductivity through Cu alloying. These findings demonstrate the potential for obtaining half-Heusler-like thermoelectric materials by tailoring high-temperature magnetic materials.
{"title":"Improving thermoelectric properties of CuMnSb alloys via strategic alloying with magnetic MnSb and Cu","authors":"Jong Min Park, Seungki Jo, Soo-ho Jung, Jinhee Bae, Linh Ba Vu, Jihun Yu, Kyung Tae Kim","doi":"10.1016/j.matlet.2024.137796","DOIUrl":"10.1016/j.matlet.2024.137796","url":null,"abstract":"<div><div>MnSb alloys are promising candidates for thermally stable magnetic materials in spintronic devices due to their high Curie temperature. When alloyed with transition metals, they hold potential as thermoelectric materials by adopting a half-Heusler structure. Among the few 3d transition metal-based compounds, CuMnSb alloys exhibit antiferromagnetic properties along with thermoelectric behavior. In this study, the CuMnSb alloy was synthesized using arc-melting, followed by powdering and spark plasma sintering. The thermoelectric properties were characterized in a temperature range of 298–673 K. The results indicate a significant improvement in the thermoelectric figure-of-merit (<em>zT</em>) of CuMnSb compared to MnSb, attributed to the increased power factor and reduced thermal conductivity through Cu alloying. These findings demonstrate the potential for obtaining half-Heusler-like thermoelectric materials by tailoring high-temperature magnetic materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137796"},"PeriodicalIF":2.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aluminum/carbon composites have garnered significant attention due to their promising thermal and mechanical properties. However, traditional manufacturing processes typically involve high-pressure techniques to achieve part densification, rendering them costly and less practical for large-scale applications. In this study, aluminum-AlSi12/diamond composites were produced using a pressureless, liquid-phase sintering technique. By carefully optimizing the sintering parameters, the densification of the composites reached 86%. Notably, this was further improved to 94% when the diamond particles were coated with copper, demonstrating the benefits of surface modification in enhancing densification. This innovative approach highlights the potential of free sintering as an effective method to achieve high-density composites without resorting to expensive high-pressure methods.
{"title":"Pressureless sintering of Al/diamond materials using AlSi12 liquid phase","authors":"Laurent Cuzacq , Isma Atchi , Jean-Louis Bobet , Yongfeng Lu , Jean-François Silvain","doi":"10.1016/j.matlet.2024.137788","DOIUrl":"10.1016/j.matlet.2024.137788","url":null,"abstract":"<div><div>Aluminum/carbon composites have garnered significant attention due to their promising thermal and mechanical properties. However, traditional manufacturing processes typically involve high-pressure techniques to achieve part densification, rendering them costly and less practical for large-scale applications. In this study, aluminum-AlSi12/diamond composites were produced using a pressureless, liquid-phase sintering technique. By carefully optimizing the sintering parameters, the densification of the composites reached 86%. Notably, this was further improved to 94% when the diamond particles were coated with copper, demonstrating the benefits of surface modification in enhancing densification. This innovative approach highlights the potential of free sintering as an effective method to achieve high-density composites without resorting to expensive high-pressure methods.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137788"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137792
Wen-Liang Zuo , Adil Murtaza , Chao Zhou , Awais Ghani , Yin Zhang , Sen Yang
In this work, we report an exotic combination of magnetic entropy change (ΔSM =4.56 Jkg-1K−1), refrigerant capacity (RC=190.6 J kg−1) and adiabatic temperature change (ΔTad=6.8 K) for varying magnetic fields (ΔH) from 0 to 5 T, with near-zero hysteresis loss at the critical point of multiphase coexistence of rhombohedral, cubic and tetragonal phases at x=0.9 in Tb1−xGdxCo2 alloys. Additionally, the ΔSM curves cover a broad temperature range of 42 K. Further analysis demonstrates that the excellent magnetocaloric performance observed at the multiphase coexistence point stems from the flattening free energy, which provides minimal energy barriers, enabling magnetic spins to switch between different crystal symmetries.
{"title":"Multiphase critical point type phase boundary induced superior magnetocaloric properties in ferromagnetic Tb1-xGdxCo2 alloys","authors":"Wen-Liang Zuo , Adil Murtaza , Chao Zhou , Awais Ghani , Yin Zhang , Sen Yang","doi":"10.1016/j.matlet.2024.137792","DOIUrl":"10.1016/j.matlet.2024.137792","url":null,"abstract":"<div><div>In this work, we report an exotic combination of magnetic entropy change (Δ<em>S</em><sub>M</sub> =4.56 Jkg<sup>-1</sup>K<sup>−1</sup>), refrigerant capacity (RC=190.6 J kg<sup>−1</sup>) and adiabatic temperature change (Δ<em>T</em><sub>ad</sub>=6.8 K) for varying magnetic fields (ΔH) from 0 to 5 T, with near-zero hysteresis loss at the critical point of multiphase coexistence of rhombohedral, cubic and tetragonal phases at x=0.9 in Tb<sub>1−x</sub>Gd<sub>x</sub>Co<sub>2</sub> alloys. Additionally, the Δ<em>S</em><sub>M</sub> curves cover a broad temperature range of 42 K. Further analysis demonstrates that the excellent magnetocaloric performance observed at the multiphase coexistence point stems from the flattening free energy, which provides minimal energy barriers, enabling magnetic spins to switch between different crystal symmetries.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137792"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137769
Sicong Zhang , Yue Zhao , Quan Li , Zhandong Wan , Aiping Wu
In this study, 2195-T8 Al-Li alloy joints were welded by tungsten inert gas (TIG) welding with three different gas protection strategies. The porosity distribution of the joints was quantified by Computed tomography (CT), and the tensile properties of the joints were evaluated. The results indicate that with appropriate back gas protection, the average ultimate tensile strength and elongation of the joints reach 396 MPa and 5.0 %, respectively, increased by 9.6 % and 47.1 % compared to the joints without back gas protection. Back gas protection effectively reduces porosity at the weld root, thereby preventing crack initiation from here during the tensile test.
{"title":"Influence of gas protection on porosity distribution and mechanical properties of 2195-T8 Al-Li alloy tungsten inert gas welded joints","authors":"Sicong Zhang , Yue Zhao , Quan Li , Zhandong Wan , Aiping Wu","doi":"10.1016/j.matlet.2024.137769","DOIUrl":"10.1016/j.matlet.2024.137769","url":null,"abstract":"<div><div>In this study, 2195-T8 Al-Li alloy joints were welded by tungsten inert gas (TIG) welding with three different gas protection strategies. The porosity distribution of the joints was quantified by Computed tomography (CT), and the tensile properties of the joints were evaluated. The results indicate that with appropriate back gas protection, the average ultimate tensile strength and elongation of the joints reach 396 MPa and 5.0 %, respectively, increased by 9.6 % and 47.1 % compared to the joints without back gas protection. Back gas protection effectively reduces porosity at the weld root, thereby preventing crack initiation from here during the tensile test.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137769"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137791
V. Thayanithi , P. Arularasan
The hydrothermal approach was used to successfully incorporate ternary Cerium Manganese Nickel mixed metal oxides (CMN-MMOs) with various Ce/Mn/Ni ratios. The improved crystallanity of incorporated CMN-MMOs was discovered using powder X-ray diffraction. From Ultra Violet (UV)–visible diffuse reflection spectroscopy (DRS), CMN-MMOs displays a broad absorption in the visible range. Scanning Electron Microscope (SEM) reveals that CMN-MMOs exhibit in nanoslab. Image of Transmission Electron Microscope (TEM) expose that synthesized samples are in hexagonal structure with average size of 20–30 nm. The photocatalytic activity was appraised for calcined samples of CMN-MMOs (1: 1: 2). It indicates the greatest photocatalysic activity with 89 % degradation of methylene blue (MB) dye. CMN- MMOs (1: 1: 2) also had a strong degradation effect on the non-dye contaminant phenol. Methylene Blue degradation followed a pseudo-first-order kinetic trend. The mechanism of photo degradation of CMN- MMOs was also explored.
{"title":"Inquisition on enhanced photocatalytic performance of ternary cerium manganese nickel metal oxide nanocomposites","authors":"V. Thayanithi , P. Arularasan","doi":"10.1016/j.matlet.2024.137791","DOIUrl":"10.1016/j.matlet.2024.137791","url":null,"abstract":"<div><div>The hydrothermal approach was used to successfully incorporate ternary Cerium Manganese Nickel mixed metal oxides (CMN-MMOs) with various Ce/Mn/Ni ratios. The improved crystallanity of incorporated CMN-MMOs was discovered using powder X-ray diffraction. From Ultra Violet (UV)–visible diffuse reflection spectroscopy (DRS), CMN-MMOs displays a broad absorption in the visible range. Scanning Electron Microscope (SEM) reveals that CMN-MMOs exhibit in nanoslab. Image of Transmission Electron Microscope (TEM) expose that synthesized samples are in hexagonal structure with average size of 20–30 nm. The photocatalytic activity was appraised for calcined samples of CMN-MMOs (1: 1: 2). It indicates the greatest photocatalysic activity with 89 % degradation of methylene blue (MB) dye. CMN- MMOs (1: 1: 2) also had a strong degradation effect on the non-dye contaminant phenol. Methylene Blue degradation followed a pseudo-first-order kinetic trend. The mechanism of photo degradation of CMN- MMOs was also explored.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137791"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137773
Jiale Li , Congcong Shen
Composing with a co-catalyst is considered an effective way to improve the performance of a pure photocatalyst. In this paper, Pt-Cu/Cu2O with localized surface plasmon resonance (LSPR) effect was prepared via a one-pot method, followed by the electrodeposition of Pt. As plasmon photosensitizers, Cu and Pt, were used to increase the light trapping and collect the hot electrons, and Pt can also be used as an electron-harvesting layer to provide reactive active sites. This synergistic effect of the bimetallic system significantly enhances the photoelectrocatalytic performance of the semiconductor material. The optimized Pt(8)-Cu/Cu2O sample achieved a high photocurrent density of 1.38 µA/cm2 at 1.23 V vs. RHE, which is increased by a factor of 4.18 compared to the pure Cu2O. The photoelectrochemical water-splitting synergistic mechanism was verified by surface photovoltage (SPV), photocurrent density, impedance tests, etc.
{"title":"Modification of Cu2O photocathodes with Cu and Pt as dual co-catalysts for significantly improved photoelectrochemical water splitting","authors":"Jiale Li , Congcong Shen","doi":"10.1016/j.matlet.2024.137773","DOIUrl":"10.1016/j.matlet.2024.137773","url":null,"abstract":"<div><div>Composing with a co-catalyst is considered an effective way to improve the performance of a pure photocatalyst. In this paper, Pt-Cu/Cu<sub>2</sub>O with localized surface plasmon resonance (LSPR) effect was prepared via a one-pot method, followed by the electrodeposition of Pt. As plasmon photosensitizers, Cu and Pt, were used to increase the light trapping and collect the hot electrons, and Pt can also be used as an electron-harvesting layer to provide reactive active sites. This synergistic effect of the bimetallic system significantly enhances the photoelectrocatalytic performance of the semiconductor material. The optimized Pt(8)-Cu/Cu<sub>2</sub>O sample achieved a high photocurrent density of 1.38 µA/cm<sup>2</sup> at 1.23 V vs. RHE, which is increased by a factor of 4.18 compared to the pure Cu<sub>2</sub>O. The photoelectrochemical water-splitting synergistic mechanism was verified by surface photovoltage (SPV), photocurrent density, impedance tests, etc.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137773"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137782
Qiuping Zhao , Rupeng Li , Guanqun Hu , Changning Bai , Xingkai Zhang
Immersion silver plating is an important surface finishing technique in the integrate circuit industry. However, it often results in silver coatings with poor compactness and adhesion due to the significant difference in potentials between silver and copper. The corrosion inhibitors of copper, rather than complexing agents of silver ions, were used to improve the immersion plated silver coating performance on copper. It was found the combined use of benzotriazole and imidazole could regulate the erosion rate of the copper substrate and improve the quality of the silver coating. The effects of different inhibitors concentrations on surface morphology, elemental composition, corrosion resistance, hardness, and conductivity of the silver coating were studied. The results indicated the optimal concentration of the combined inhibitors was 0.058 mol∙L-1, which enhanced the compactness, crystallinity, and overall performance of the silver coating by passivating the copper surface and regulating the silver deposition process.
{"title":"Improving the performance of silver coating deposited on copper through corrosion inhibitors","authors":"Qiuping Zhao , Rupeng Li , Guanqun Hu , Changning Bai , Xingkai Zhang","doi":"10.1016/j.matlet.2024.137782","DOIUrl":"10.1016/j.matlet.2024.137782","url":null,"abstract":"<div><div>Immersion silver plating is an important surface finishing technique in the integrate circuit industry. However, it often results in silver coatings with poor compactness and adhesion due to the significant difference in potentials between silver and copper. The corrosion inhibitors of copper, rather than complexing agents of silver ions, were used to improve the immersion plated silver coating performance on copper. It was found the combined use of benzotriazole and imidazole could regulate the erosion rate of the copper substrate and improve the quality of the silver coating. The effects of different inhibitors concentrations on surface morphology, elemental composition, corrosion resistance, hardness, and conductivity of the silver coating were studied. The results indicated the optimal concentration of the combined inhibitors was 0.058 mol∙L<sup>-1</sup>, which enhanced the compactness, crystallinity, and overall performance of the silver coating by passivating the copper surface and regulating the silver deposition process.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137782"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137787
Ahmed A. Alawi Al-Naghi , Nejib Ghazouani , Abdellatif Selmi , Ali Raza , Mohd Ahmed
The mechanical and microstructural properties of recycled aggregate geopolymer concrete (RAGC) that contains high-strength steel wire fibers (HSWF), recycled tire steel fibers (RTF), or a mix of the two as hybrid fibers are investigated in this study. Using scanning electron microscopy (SEM) analysis, the study examines microstructure, flexural toughness, compressive strength, and stress–strain response. By volume, metallic fiber additions ranged from 0.5 % to 1.5 %. Results showed that the HSWF1.5 mix achieved the highest mechanical strength of 56.27 MPa at 28 days, a 16.18 % increase over the mix having no fibers i.e., the Control mix. Toughness increased by 59 % in the mix with 1.5 % hybrid fibers i.e., HF1.5 mix, underscoring the significant durability enhancement from fibers.
{"title":"Mechanical and microstructural characterization of recycled aggregate geopolymer concrete having high strength and recycled tire steel wire fibers","authors":"Ahmed A. Alawi Al-Naghi , Nejib Ghazouani , Abdellatif Selmi , Ali Raza , Mohd Ahmed","doi":"10.1016/j.matlet.2024.137787","DOIUrl":"10.1016/j.matlet.2024.137787","url":null,"abstract":"<div><div>The mechanical and microstructural properties of recycled aggregate geopolymer concrete (RAGC) that contains high-strength steel wire fibers (HSWF), recycled tire steel fibers (RTF), or a mix of the two as hybrid fibers are investigated in this study. Using scanning electron microscopy (SEM) analysis, the study examines microstructure, flexural toughness, compressive strength, and stress–strain response. By volume, metallic fiber additions ranged from 0.5 % to 1.5 %. Results showed that the HSWF1.5 mix achieved the highest mechanical strength of 56.27 MPa at 28 days, a 16.18 % increase over the mix having no fibers i.e., the Control mix. Toughness increased by 59 % in the mix with 1.5 % hybrid fibers i.e., HF1.5 mix, underscoring the significant durability enhancement from fibers.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137787"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-11-26DOI: 10.1016/j.matlet.2024.137778
Xinwei Yang , Bo Jiang , Ye Wang , Hongyu Xu , Maoliang Hu , Yu Guo
In this study, the primary Mg2Si phase was modified by the addition of TiB2 to Al-15 % Mg2Si composites. The effect of TiB2 on the morphology, size and refinement mechanism of the primary Mg2Si phase was investigated. The results show that TiB2 has an obvious refining effect on the primary Mg2Si phase, and the average size of the primary Mg2Si particles is reduced from 55.11 μm to 25.18 μm. The refinement mechanism is that TiB2 promotes heterogeneous nucleation of the primary Mg2Si phase. After refinement, the wear resistance of the composites was significantly improved.
{"title":"Refining mechanism of primary Mg2Si and wear resistance in Al-15 %Mg2Si composites by TiB2 particles addition","authors":"Xinwei Yang , Bo Jiang , Ye Wang , Hongyu Xu , Maoliang Hu , Yu Guo","doi":"10.1016/j.matlet.2024.137778","DOIUrl":"10.1016/j.matlet.2024.137778","url":null,"abstract":"<div><div>In this study, the primary Mg<sub>2</sub>Si phase was modified by the addition of TiB<sub>2</sub> to Al-15 % Mg<sub>2</sub>Si composites. The effect of TiB<sub>2</sub> on the morphology, size and refinement mechanism of the primary Mg<sub>2</sub>Si phase was investigated. The results show that TiB<sub>2</sub> has an obvious refining effect on the primary Mg<sub>2</sub>Si phase, and the average size of the primary Mg<sub>2</sub>Si particles is reduced from 55.11 μm to 25.18 μm. The refinement mechanism is that TiB<sub>2</sub> promotes heterogeneous nucleation of the primary Mg<sub>2</sub>Si phase. After refinement, the wear resistance of the composites was significantly improved.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137778"},"PeriodicalIF":2.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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