Pub Date : 2026-02-12DOI: 10.1016/j.jmst.2026.01.054
Mengyu Dai, Yumeng Deng, Qian Wang, Bin Ren, Hang Yu, Changmei Wang, Yujun Jia, Hejun Li
The conventional principle for designing high-temperature electromagnetic wave (EMW) absorbing materials focuses on minimizing oxidation during the material design process. In contrast, our work introduces an additional mechanism suitable for high-temperature EMW absorption: a strategy that actively harnesses the oxidation process. We demonstrate that the high-temperature oxidation behavior of ceramics, such as ZrB2, can be utilized to dynamically engineer superior EMW absorption. Thein-situ formed ZrO2 phase after oxidation serves a dual function: it acts as a dielectric modulator, optimizing impedance matching by counterbalancing the continually increasing electrical conductivity, while simultaneously generating heterogeneous interfaces that significantly enhance interfacial polarization loss. This multi-mechanism synergy enables the composite to achieve an effective absorption bandwidth (EAB) of 3.9 GHz in the X-band at 1073 K, with a thickness of 2.4 mm and a maintained effective absorption rate of 92.8% (X-band), alongside excellent thermal management performance. Our findings reveal a novel approach of leveraging high-temperature oxidation to design advanced composites for applications in harsh environments.
{"title":"ZrB2-based ceramic composite with simultaneous high-temperature microwave absorption and thermal management","authors":"Mengyu Dai, Yumeng Deng, Qian Wang, Bin Ren, Hang Yu, Changmei Wang, Yujun Jia, Hejun Li","doi":"10.1016/j.jmst.2026.01.054","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.054","url":null,"abstract":"The conventional principle for designing high-temperature electromagnetic wave (EMW) absorbing materials focuses on minimizing oxidation during the material design process. In contrast, our work introduces an additional mechanism suitable for high-temperature EMW absorption: a strategy that actively harnesses the oxidation process. We demonstrate that the high-temperature oxidation behavior of ceramics, such as ZrB<sub>2</sub>, can be utilized to dynamically engineer superior EMW absorption. Thein-situ formed ZrO<sub>2</sub> phase after oxidation serves a dual function: it acts as a dielectric modulator, optimizing impedance matching by counterbalancing the continually increasing electrical conductivity, while simultaneously generating heterogeneous interfaces that significantly enhance interfacial polarization loss. This multi-mechanism synergy enables the composite to achieve an effective absorption bandwidth (EAB) of 3.9 GHz in the X-band at 1073 K, with a thickness of 2.4 mm and a maintained effective absorption rate of 92.8% (X-band), alongside excellent thermal management performance. Our findings reveal a novel approach of leveraging high-temperature oxidation to design advanced composites for applications in harsh environments.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"94 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146198583","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 : 2026-02-10DOI: 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}
Pub Date : 2026-02-09DOI: 10.1016/j.jmst.2026.01.050
Xing-Jian Du, Yu-Heng Zhang, Wei-Zhong Han
{"title":"A dislocation source efficiency-based model for grain-size-dependent ductile-to-brittle transition in tungsten","authors":"Xing-Jian Du, Yu-Heng Zhang, Wei-Zhong Han","doi":"10.1016/j.jmst.2026.01.050","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.01.050","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"47 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153316","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}
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