The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys
文献类型：期刊论文
| 作者 | Tang, Guangquan1; Shao, Xu1; Pang, Jingyu1; Ji, Yu1; Wang, Aimin1; Li, Jinguo1; Zhang, Haifeng2; Zhang, Hongwei1 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 16期号:24页码:10 |
| 关键词 | refractory high-entropy alloys B2 phase specific yield strength strain softening deformation microstructure |
| DOI | 10.3390/ma16247592 |
| 通讯作者 | Pang, Jingyu(jypang17s@imr.ac.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn) |
| 英文摘要 | The NbTiAlZrHfTaMoW refractory high-entropy alloy (RHEA) system with the structure of the B2 matrix (antiphase domains) and antiphase domain boundaries was firstly developed. We conducted the mechanical properties of the RHEAs at 298 K, 1023 K, 1123 K, and 1223 K, as well as typical deformation characteristics. The RHEAs with low density (7.41 similar to 7.51 g/cm(3)) have excellent compressive-specific yield strength ( sigma YS/rho) at 1023 K (similar to 131 MPa center dot cm(3)/g) and 1123 K (similar to 104.2 MPa center dot cm(3)/g), respectively, which are far superior to most typical RHEAs. And, they still keep appropriate plastic deformability at room temperature ( epsilon > 0.35). The superior specific yield strengths are mainly attributed to the solid solution strengthening induced by the Zr element. The formation of the dislocation slip bands with [111](10 $$(1) over bar) and [111](11 $$(2) over bar) directions and their interaction provide considerable plastic deformation capability. Meanwhile, dynamic recrystallization and dislocation annihilation accelerate the continuous softening after yielding at 1123 K. |
| 资助项目 | Liaoning Key Research and Development Program |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001132600800001 |
| 出版者 | MDPI |
| 资助机构 | Liaoning Key Research and Development Program |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Pang, Jingyu; Zhang, Hongwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Guangquan,Shao, Xu,Pang, Jingyu,et al. The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys[J]. MATERIALS,2023,16(24):10. |
| APA | Tang, Guangquan.,Shao, Xu.,Pang, Jingyu.,Ji, Yu.,Wang, Aimin.,...&Zhang, Hongwei.(2023).The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys.MATERIALS,16(24),10. |
| MLA | Tang, Guangquan,et al."The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys".MATERIALS 16.24(2023):10. |
入库方式： OAI收割
来源：金属研究所
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