Pub Date : 2026-02-10DOI: 10.1016/j.jmst.2026.02.005
Fang Chai, Xinghui Han, Chaoyuan Tian, Qifu Chen, Xuan Hu, Wuhao Zhuang, Fangyan Zheng, Lin Hua
Severe anisotropy, which originates from intensive basal texture during a single-degree-of-freedom process, is the major bottleneck for the wide application of lightweight magnesium alloy sheets. Herein, we innovatively report a multi-degrees-of-freedom (multi-DoF) forming process and efficiently achieve AZ91 alloy sheet isotropy. Our research demonstrates that as-extruded sheets exhibit obvious anisotropy resulting from anisotropic textures. Owing to the fact that the forces of multi-DoF forming are always with slight inclinations to the axial direction (AD), the c-axes of these anisotropic textures possess large angles to force direction, which leads to these anisotropic textures displaying soft orientation and consequently contribute to the uniform non-basal slip activation. This uniform slip behavior leads to all these anisotropic textures spreading towards AD and gradually forming the isotropic texture. Because of the same deformation mode, the isotropic textures also have a similar proportion. The isotropic textures contribute to excellent isotropy, with the maximum disparity of strength-plasticity decreasing from 55 MPa-5.4% in the as-extruded condition to 8 MPa-0.2%. Our findings are expected to provide a novel strategy for achieving isotropy and brightening the prospect of magnesium alloy sheets.
{"title":"Achieving magnesium alloy sheet isotropy via a multi-DoF forming process","authors":"Fang Chai, Xinghui Han, Chaoyuan Tian, Qifu Chen, Xuan Hu, Wuhao Zhuang, Fangyan Zheng, Lin Hua","doi":"10.1016/j.jmst.2026.02.005","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.02.005","url":null,"abstract":"Severe anisotropy, which originates from intensive basal texture during a single-degree-of-freedom process, is the major bottleneck for the wide application of lightweight magnesium alloy sheets. Herein, we innovatively report a multi-degrees-of-freedom (multi-DoF) forming process and efficiently achieve AZ91 alloy sheet isotropy. Our research demonstrates that as-extruded sheets exhibit obvious anisotropy resulting from anisotropic textures. Owing to the fact that the forces of multi-DoF forming are always with slight inclinations to the axial direction (AD), the <em>c</em>-axes of these anisotropic textures possess large angles to force direction, which leads to these anisotropic textures displaying soft orientation and consequently contribute to the uniform non-basal slip activation. This uniform slip behavior leads to all these anisotropic textures spreading towards AD and gradually forming the isotropic texture. Because of the same deformation mode, the isotropic textures also have a similar proportion. The isotropic textures contribute to excellent isotropy, with the maximum disparity of strength-plasticity decreasing from 55 MPa-5.4% in the as-extruded condition to 8 MPa-0.2%. Our findings are expected to provide a novel strategy for achieving isotropy and brightening the prospect of magnesium alloy sheets.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"25 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146187","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}
As a promising lead-free alternative to Pb-based piezoelectric materials, (Bi,Na,K)TiO<sub>3</sub> (BNKT)-based single crystals have attracted increasing interest for high-performance electromechanical applications. In this work, we report a local heterostructure engineering strategy to achieves record high temperature piezoelectric performance in BNKT-based single crystals. MnO<sub>2</sub> was introduced into flux-grown (Bi<sub>0.48</sub>Na<sub>0.425</sub>K<sub>0.055</sub>Ba<sub>0.04</sub>)TiO<sub>3</sub> single crystals (BNKBT–Mn), resulting in pronounced nanoscale compositional/structural heterogeneity. This engineered local disorder dramatically modifies polarization dynamics and domain configurations: at room temperature, the modified crystals exhibit a large piezoelectric coefficient <em>d</em><sub>33</sub> = 513 pC/N while retaining a relatively high depolarization temperature (<em>T</em><sub>d</sub>) of 148°C. A maximum piezoelectric coefficient of 1257 pC/N is achieved at 147°C, together with a large unipolar electrostrain of 1.24% and an exceptionally high converse piezoelectric coefficient <span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mo is="true">(</mo><msubsup is="true"><mi is="true">d</mi><mrow is="true"><mn is="true">33</mn></mrow><mo is="true">*</mo></msubsup></mrow></math>' role="presentation" style="font-size: 90%; display: inline-block; position: relative;" tabindex="0"><svg aria-hidden="true" focusable="false" height="3.24ex" role="img" style="vertical-align: -1.043ex;" viewbox="0 -945.9 1786.8 1395" width="4.15ex" xmlns:xlink="http://www.w3.org/1999/xlink"><g fill="currentColor" stroke="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><use is="true" xlink:href="#MJSZ1-28"></use><g is="true" transform="translate(458,0)"><g is="true"><use xlink:href="#MJMATHI-64"></use></g><g is="true" transform="translate(524,320)"><use transform="scale(0.707)" xlink:href="#MJMAIN-2217"></use></g><g is="true" transform="translate(520,-307)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-33"></use><use transform="scale(0.707)" x="500" xlink:href="#MJMAIN-33" y="0"></use></g></g></g></g></g></svg><span role="presentation"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mo is="true">(</mo><msubsup is="true"><mi is="true">d</mi><mrow is="true"><mn is="true">33</mn></mrow><mo is="true">*</mo></msubsup></mrow></math></span></span><script type="math/mml"><math><mrow is="true"><mo is="true">(</mo><msubsup is="true"><mi is="true">d</mi><mrow is="true"><mn is="true">33</mn></mrow><mo is="true">*</mo></msubsup></mrow></math></script></span>) of 1771 pm/V. Further analyses indicate that the giant high-temperature piezoelectric response is closely associated with a temperature-driven tetragonal (T) – pseudocubic (PC) phase transition,
{"title":"Record high-temperature piezoelectric performance in BNKT-based single crystals via local heterostructure design","authors":"Jialin Niu, Yongxing Wei, Yanghuan Deng, Changqing Jin, Changpeng Guan, Siyuan Dong, Zhonghua Dai, Zengzhe Xi, Zengyun Jian, Zhong Yang, Li Jin","doi":"10.1016/j.jmst.2026.02.002","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.02.002","url":null,"abstract":"As a promising lead-free alternative to Pb-based piezoelectric materials, (Bi,Na,K)TiO<sub>3</sub> (BNKT)-based single crystals have attracted increasing interest for high-performance electromechanical applications. In this work, we report a local heterostructure engineering strategy to achieves record high temperature piezoelectric performance in BNKT-based single crystals. MnO<sub>2</sub> was introduced into flux-grown (Bi<sub>0.48</sub>Na<sub>0.425</sub>K<sub>0.055</sub>Ba<sub>0.04</sub>)TiO<sub>3</sub> single crystals (BNKBT–Mn), resulting in pronounced nanoscale compositional/structural heterogeneity. This engineered local disorder dramatically modifies polarization dynamics and domain configurations: at room temperature, the modified crystals exhibit a large piezoelectric coefficient <em>d</em><sub>33</sub> = 513 pC/N while retaining a relatively high depolarization temperature (<em>T</em><sub>d</sub>) of 148°C. A maximum piezoelectric coefficient of 1257 pC/N is achieved at 147°C, together with a large unipolar electrostrain of 1.24% and an exceptionally high converse piezoelectric coefficient <span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><mo is=\"true\">(</mo><msubsup is=\"true\"><mi is=\"true\">d</mi><mrow is=\"true\"><mn is=\"true\">33</mn></mrow><mo is=\"true\">*</mo></msubsup></mrow></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"3.24ex\" role=\"img\" style=\"vertical-align: -1.043ex;\" viewbox=\"0 -945.9 1786.8 1395\" width=\"4.15ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"><use is=\"true\" xlink:href=\"#MJSZ1-28\"></use><g is=\"true\" transform=\"translate(458,0)\"><g is=\"true\"><use xlink:href=\"#MJMATHI-64\"></use></g><g is=\"true\" transform=\"translate(524,320)\"><use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-2217\"></use></g><g is=\"true\" transform=\"translate(520,-307)\"><g is=\"true\"><use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-33\"></use><use transform=\"scale(0.707)\" x=\"500\" xlink:href=\"#MJMAIN-33\" y=\"0\"></use></g></g></g></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><mo is=\"true\">(</mo><msubsup is=\"true\"><mi is=\"true\">d</mi><mrow is=\"true\"><mn is=\"true\">33</mn></mrow><mo is=\"true\">*</mo></msubsup></mrow></math></span></span><script type=\"math/mml\"><math><mrow is=\"true\"><mo is=\"true\">(</mo><msubsup is=\"true\"><mi is=\"true\">d</mi><mrow is=\"true\"><mn is=\"true\">33</mn></mrow><mo is=\"true\">*</mo></msubsup></mrow></math></script></span>) of 1771 pm/V. Further analyses indicate that the giant high-temperature piezoelectric response is closely associated with a temperature-driven tetragonal (T) – pseudocubic (PC) phase transition, ","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"110 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134241","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}
{"title":"Novel and efficient benzimidazole derivative corrosion inhibitor by pH-driven gated release from nanotubes for multifunctional protection of X65 steel in submarine oil and gas field pipelines","authors":"Danyang Wang, Xiaole Xin, Quanqing Wu, Quanrun Wang, Yihui Wang, Shuai Yuan, Jizhou Duan, Huiwen Tian","doi":"10.1016/j.jmst.2026.01.048","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.048","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"77 1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134242","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 : 2026-02-07DOI: 10.1016/j.jmst.2026.01.049
Fuyuan Liu, Zelong Du, Guantao Wang, Enyu Guo, Zongning Chen, Yanjin Xu, Zhirou Zhang, Huijun Kang, Tongmin Wang
Al–Cu–Li alloys are widely applied in aerospace and military owing to their high specific strength and stiffness. However, their mechanical behavior under elevated-temperature environments is degraded, with reduced strength and damage tolerance. This study investigates the microstructural evolution and damage mechanisms of Al–4.1Cu–1.3Li–0.4Mg–0.4Ag–0.5Zn–0.3Mn–0.1Zr alloy under elevated-temperature tensile loading. In-situ synchrotron tomography is performed during tensile tests at varying temperatures (100–200°C) to reveal the mechanical performance and damage mechanisms. As the tensile temperature increases, both the yield strength and ultimate tensile strength decrease from 694 and 739 MPa at 25°C to 501 and 521 MPa at 200°C, while elongation increases from 5.9% to 12.0%. The strength reduction is primarily attributed to the dissolution and coarsening of T1 precipitates, with the accelerated coarsening rate as the temperature rises. Concurrently, the geometrically necessary dislocation density decreases, and the precipitate-free zones widen, promoting strain localization and crack initiation at grain boundaries. In-situ synchrotron tomography reveals that voids predominantly nucleate near the T phase. At 100°C, brittle fracture initiates from the T phase, followed by the nucleation of voids at these regions, which grow slowly into elliptical shapes along the loading direction. As the temperature increases to 200°C, the interface strength between the T phase and matrix reduces, leading to debonding and a dominant void nucleation mechanism. Voids continue to grow and merge through plastic necking, ultimately resulting in intergranular ductile fracture.
{"title":"Damage evolution and fracture mechanisms of Al–Cu–Li alloy during elevated-temperature tensile deformation via in-situ synchrotron tomography","authors":"Fuyuan Liu, Zelong Du, Guantao Wang, Enyu Guo, Zongning Chen, Yanjin Xu, Zhirou Zhang, Huijun Kang, Tongmin Wang","doi":"10.1016/j.jmst.2026.01.049","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.049","url":null,"abstract":"Al–Cu–Li alloys are widely applied in aerospace and military owing to their high specific strength and stiffness. However, their mechanical behavior under elevated-temperature environments is degraded, with reduced strength and damage tolerance. This study investigates the microstructural evolution and damage mechanisms of Al–4.1Cu–1.3Li–0.4Mg–0.4Ag–0.5Zn–0.3Mn–0.1Zr alloy under elevated-temperature tensile loading. <em>In-situ</em> synchrotron tomography is performed during tensile tests at varying temperatures (100–200°C) to reveal the mechanical performance and damage mechanisms. As the tensile temperature increases, both the yield strength and ultimate tensile strength decrease from 694 and 739 MPa at 25°C to 501 and 521 MPa at 200°C, while elongation increases from 5.9% to 12.0%. The strength reduction is primarily attributed to the dissolution and coarsening of T<sub>1</sub> precipitates, with the accelerated coarsening rate as the temperature rises. Concurrently, the geometrically necessary dislocation density decreases, and the precipitate-free zones widen, promoting strain localization and crack initiation at grain boundaries. <em>In-situ</em> synchrotron tomography reveals that voids predominantly nucleate near the T phase. At 100°C, brittle fracture initiates from the T phase, followed by the nucleation of voids at these regions, which grow slowly into elliptical shapes along the loading direction. As the temperature increases to 200°C, the interface strength between the T phase and matrix reduces, leading to debonding and a dominant void nucleation mechanism. Voids continue to grow and merge through plastic necking, ultimately resulting in intergranular ductile fracture.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"95 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134243","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 : 2026-02-05DOI: 10.1016/j.jmst.2026.02.001
Xing-Kai Duan, Qin-Xue Hu, Yue-Zhen Jiang, Zhan-Qi Cheng, Liang-Cao Yin, Qingfeng Liu, Li Sun, Dong-Wei Ao, Kong-Gang Hu, Jing Kuang, Deng-Liang Yi, Fu-Yi Yu, Raza Moshwan, M. Shahabuddin, Wei-Di Liu
With the advantages of material-saving shapable production and facile geometry design, shapable methods provide a broad prospect for the future thermoelectric material production. Herein, cold spraying followed by annealing (CSA) induces enriched defects in the bulk material, which can lead to excellent thermoelectric performance and hardness. Compared with the HP process, CSA contributes to more pores and intrinsic defects. The enriched intrinsic defects contribute to moderate electrical performance. Simultaneously, these defects strongly scatter phonons, leading to ultra-low total thermal conductivity values of ∼0.64 W m−1 K−1 for both p-type CSA Bi0.5Sb1.5Te3 and n-type CSA Bi2Te2.7Se0.3 bulks at room temperature. Correspondingly, CSA bulks possess excellent room-temperature zT of ∼1.1 (p-type Bi0.5Sb1.5Te3) and ∼0.9 (n-type Bi2Te2.7Se0.3), respectively, which are comparable to those prepared by HP and other shapable methods. Furthermore, a four-leg thermoelectric device is assembled based on as-prepared p-type CSA Bi0.5Sb1.5Te3 and n-type CSA Bi2Te2.7Se0.3 bulks, achieving a rational energy conversion efficiency of ∼4% under a small temperature difference of 100 K. This study demonstrates CSA method is promising for future shapable production of high-performance thermoelectric materials.
{"title":"Cold spraying-an effective shapable method for preparing high-performance Bi2Te3-based thermoelectrics","authors":"Xing-Kai Duan, Qin-Xue Hu, Yue-Zhen Jiang, Zhan-Qi Cheng, Liang-Cao Yin, Qingfeng Liu, Li Sun, Dong-Wei Ao, Kong-Gang Hu, Jing Kuang, Deng-Liang Yi, Fu-Yi Yu, Raza Moshwan, M. Shahabuddin, Wei-Di Liu","doi":"10.1016/j.jmst.2026.02.001","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.02.001","url":null,"abstract":"With the advantages of material-saving shapable production and facile geometry design, shapable methods provide a broad prospect for the future thermoelectric material production. Herein, cold spraying followed by annealing (CSA) induces enriched defects in the bulk material, which can lead to excellent thermoelectric performance and hardness. Compared with the HP process, CSA contributes to more pores and intrinsic defects. The enriched intrinsic defects contribute to moderate electrical performance. Simultaneously, these defects strongly scatter phonons, leading to ultra-low total thermal conductivity values of ∼0.64 W m<sup>−1</sup> K<sup>−1</sup> for both p-type CSA Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> and n-type CSA Bi<sub>2</sub>Te<sub>2.7</sub>Se<sub>0.3</sub> bulks at room temperature. Correspondingly, CSA bulks possess excellent room-temperature <em>zT</em> of ∼1.1 (p-type Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub>) and ∼0.9 (n-type Bi<sub>2</sub>Te<sub>2.7</sub>Se<sub>0.3</sub>), respectively, which are comparable to those prepared by HP and other shapable methods. Furthermore, a four-leg thermoelectric device is assembled based on as-prepared p-type CSA Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> and n-type CSA Bi<sub>2</sub>Te<sub>2.7</sub>Se<sub>0.3</sub> bulks, achieving a rational energy conversion efficiency of ∼4% under a small temperature difference of 100 K. This study demonstrates CSA method is promising for future shapable production of high-performance thermoelectric materials.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122156","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 : 2026-02-05DOI: 10.1016/j.jmst.2026.01.042
Xuetong Zeng, Shasha Yang, Chen Tang, Minghui Chen, Fuhui Wang
The conventional strategy of strengthening nickel-based composites by maximizing carbide content faces a fundamental limitation, where excessive carbides inevitably agglomerate and coarsen, leading to diminishing strengthening returns and a severe loss of ductility. This study establishes a homogeneous carbide dispersion, not nominal content, as the determinant of superior mechanical properties. To realize this, we introduce Si as a self-consuming microstructural modulator during spark plasma sintering of a Ni20Cr-based composite. The semiconducting nature of Si markedly intensifies localized Joule heating at particle interfaces, inducing transient melting of the Ni matrix. This melting, in turn, intensifies thermal gradients and Marangoni convection, thereby facilitating the inward transport and homogenization of in situ formed nano-TiC dispersions. Remarkably, Si completely dissolves into the matrix post-sintering, avoiding the formation of brittle phases and thereby preserving ductility. The optimized composite, with only 4 wt% Ti3SiC2 and 3 wt% Si, achieves an exceptional yield strength of 1273 MPa, an ultimate tensile strength of 1558 MPa, and maintains good elongation. This work thus establishes a new paradigm wherein microstructural homogeneity, rather than nominal content, governs the strengthening potential of carbide-reinforced composites.
{"title":"From content to distribution: Achieving high-strength Ni-based composites via Si-induced homogeneous carbide dispersion","authors":"Xuetong Zeng, Shasha Yang, Chen Tang, Minghui Chen, Fuhui Wang","doi":"10.1016/j.jmst.2026.01.042","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.042","url":null,"abstract":"The conventional strategy of strengthening nickel-based composites by maximizing carbide content faces a fundamental limitation, where excessive carbides inevitably agglomerate and coarsen, leading to diminishing strengthening returns and a severe loss of ductility. This study establishes a homogeneous carbide dispersion, not nominal content, as the determinant of superior mechanical properties. To realize this, we introduce Si as a self-consuming microstructural modulator during spark plasma sintering of a Ni20Cr-based composite. The semiconducting nature of Si markedly intensifies localized Joule heating at particle interfaces, inducing transient melting of the Ni matrix. This melting, in turn, intensifies thermal gradients and Marangoni convection, thereby facilitating the inward transport and homogenization of <em>in situ</em> formed nano-TiC dispersions. Remarkably, Si completely dissolves into the matrix post-sintering, avoiding the formation of brittle phases and thereby preserving ductility. The optimized composite, with only 4 wt% Ti<sub>3</sub>SiC<sub>2</sub> and 3 wt% Si, achieves an exceptional yield strength of 1273 MPa, an ultimate tensile strength of 1558 MPa, and maintains good elongation. This work thus establishes a new paradigm wherein microstructural homogeneity, rather than nominal content, governs the strengthening potential of carbide-reinforced composites.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"293 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134285","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 : 2026-02-05DOI: 10.1016/j.jmst.2026.01.045
Rui-nan Chen, Kun-kun Deng, Cui-ju Wang, Kai-bo Nie, Quan-xin Shi, Yi-jia Li
This work reports a novel strategy for low-temperature, high-strength joining of Mg-Zn alloys based on a combination of rolled composite and diffusion reaction. A Mg/Zn filler preform was fabricated via rolling, wherein a non-equilibrium Mg7Zn3 phase with low melting point was in situ self-generated by lattice distortion induction and dislocation tube effect. The localized melting of the Mg7Zn3 phase triggers an overall gradient melting to achieve low-temperature, high-strength joining of Mg-Zn alloys. The exceptional strength originates from the alternating distribution structure of soft α'-Mg and hard Mg7Zn3 (MgZn2) phases. The method provides a new filler design strategy and theoretical insights for low-temperature high-strength joining of Mg alloys.
{"title":"Lattice distortion induces non-equilibrium phase formation to achieve low-temperature high-strength joining of Mg-Zn alloys","authors":"Rui-nan Chen, Kun-kun Deng, Cui-ju Wang, Kai-bo Nie, Quan-xin Shi, Yi-jia Li","doi":"10.1016/j.jmst.2026.01.045","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.045","url":null,"abstract":"This work reports a novel strategy for low-temperature, high-strength joining of Mg-Zn alloys based on a combination of rolled composite and diffusion reaction. A Mg/Zn filler preform was fabricated via rolling, wherein a non-equilibrium Mg<sub>7</sub>Zn<sub>3</sub> phase with low melting point was in situ self-generated by lattice distortion induction and dislocation tube effect. The localized melting of the Mg<sub>7</sub>Zn<sub>3</sub> phase triggers an overall gradient melting to achieve low-temperature, high-strength joining of Mg-Zn alloys. The exceptional strength originates from the alternating distribution structure of soft α'-Mg and hard Mg<sub>7</sub>Zn<sub>3</sub> (MgZn<sub>2</sub>) phases. The method provides a new filler design strategy and theoretical insights for low-temperature high-strength joining of Mg alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"24 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122153","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 : 2026-02-05DOI: 10.1016/j.jmst.2025.12.062
Mingtao Wang, Qingshuai Zhang, Zhongyu Cui, Bo Zhang, Liwei Wang, Hao Wu, Huiyun Tian, Hongzhi Cui
The corrosion behavior and corrosion-induced mechanical degradation of 2524-T3 aluminum alloy in pure chloride and HSO3−-containing environments are investigated in the present work. The controlling factors and underlying mechanisms of the mechanical property degradation and the associated reversibility are discussed. In a pure chloride environment, the ductility loss is fully reversible, which is influenced by the corrosion product layer, the nature and depth of subsurface attack propagation, and the corrosion-induced hydrogen behavior. However, in the HSO3⁻-containing environment, the ductility loss is predominantly irreversible, with a recovery rate of 14.6% after 48 h and only 3.4% after 72 h. This is attributed to changes in the initial pH, buffer effect, and the corrosion patterns, with the buffer effect accounting for 72% of the contribution to the irreversibility. The results provide insights to predict the reversibility of the mechanical property degradation in aluminum alloys, thereby addressing the challenges posed by corrosion in diverse environments for ensuring safe use and widespread application.
{"title":"Mechanistic insights into corrosion-induced mechanical degradation of 2524-T3 aluminum alloy: Environmentally induced variable ductility reversibility","authors":"Mingtao Wang, Qingshuai Zhang, Zhongyu Cui, Bo Zhang, Liwei Wang, Hao Wu, Huiyun Tian, Hongzhi Cui","doi":"10.1016/j.jmst.2025.12.062","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.062","url":null,"abstract":"The corrosion behavior and corrosion-induced mechanical degradation of 2524-T3 aluminum alloy in pure chloride and HSO<sub>3</sub><sup>−</sup>-containing environments are investigated in the present work. The controlling factors and underlying mechanisms of the mechanical property degradation and the associated reversibility are discussed. In a pure chloride environment, the ductility loss is fully reversible, which is influenced by the corrosion product layer, the nature and depth of subsurface attack propagation, and the corrosion-induced hydrogen behavior. However, in the HSO<sub>3</sub>⁻-containing environment, the ductility loss is predominantly irreversible, with a recovery rate of 14.6% after 48 h and only 3.4% after 72 h. This is attributed to changes in the initial pH, buffer effect, and the corrosion patterns, with the buffer effect accounting for 72% of the contribution to the irreversibility. The results provide insights to predict the reversibility of the mechanical property degradation in aluminum alloys, thereby addressing the challenges posed by corrosion in diverse environments for ensuring safe use and widespread application.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"28 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122154","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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