Novel as-cast Ti-rich refractory complex concentrated alloys with superior tensile properties
文献类型：期刊论文
| 作者 | Zeng, Shuai1,2,3; Zhou, Yongkang1,2,3; Gao, Hongquan5; Li, Huan1,3; Chen, Jingqian1,2,3; Zhang, Hongwei1,3; Fu, Huameng1,3; Wang, Aiming1,3; Zhang, Haifeng1,3,4; Zhao, Hongwei5 |
| 刊名 | SCIENCE CHINA-MATERIALS
 |
| 出版日期 | 2023-12-27 |
| 页码 | 10 |
| 关键词 | refractory complex concentrated alloys lattice distortion mechanical properties strengthening mechanism deformation behavior |
| ISSN号 | 2095-8226 |
| DOI | 10.1007/s40843-023-2705-2 |
| 通讯作者 | Zhu, Zhengwang(zwzhu@imr.ac.cn) |
| 英文摘要 | Refractory complex concentrated alloys (RCCAs) have drawn particular attention for their high yield strength and superior softening resistance at high temperatures. However, poor room-temperature ductility and high density remain the main challenges for their processing and applications. Here, using inherent material characteristics as the alloy-design principles, three novel single-phase body-centered cubic structured Ti3Zr1.5Nb(1-x)MoxVAl0.25 (x = 0.1, 0.3, 0.5, marked as Mo0.1, Mo0.3, and Mo0.5, respectively) RCCAs with promising tensile ductility and relatively low density below 6 g cm(-3) were developed by tailoring the Mo concentration. The introduction of Mo elements with high shear modulus promotes lattice distortion, contributing to enhanced lattice friction stress and yield strength. The Mo0.3 and Mo0.5 alloys exhibit tensile yield strengths exceeding 1100 MPa and high fracture elongation of over 15% in the as-cast state. Labusch's model revealed that solid-solution strengthening induced by atomic size and shear modulus mismatch contributes most significantly to yield strength. Deformation microstructure observations uncovered that the formation of the kink bands, dense-dislocation walls, and Taylor lattices are highly effective in enhancing strain-hardening capacity due to their high density of dislocation boundaries, enabling the alloys to maintain high strength while yet ensuring enough ductility. This study provides new insights into the development of strong and ductile RCCAs with single-phase structures. |
| 资助项目 | National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LY- JSC023] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001134898400001 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; Chinese Academy of Sciences |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhu, Zhengwang |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 4.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 5.Unit 96901 PLA, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Shuai,Zhou, Yongkang,Gao, Hongquan,et al. Novel as-cast Ti-rich refractory complex concentrated alloys with superior tensile properties[J]. SCIENCE CHINA-MATERIALS,2023:10. |
| APA | Zeng, Shuai.,Zhou, Yongkang.,Gao, Hongquan.,Li, Huan.,Chen, Jingqian.,...&Zhu, Zhengwang.(2023).Novel as-cast Ti-rich refractory complex concentrated alloys with superior tensile properties.SCIENCE CHINA-MATERIALS,10. |
| MLA | Zeng, Shuai,et al."Novel as-cast Ti-rich refractory complex concentrated alloys with superior tensile properties".SCIENCE CHINA-MATERIALS (2023):10. |
入库方式： OAI收割
来源：金属研究所
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