Effects of heat treatment on microstructure evolution and mechanical properties of Ti-22Al-24Nb-0.5Mo alloy
文献类型：期刊论文
| 作者 | Li, N.1,2; Zhao, Z. B.1; Sun, H.1,2; Zhou, T. Y.1,2; Wang, Q. J.1; Yang, J. X.1; Liu, Y. H.1,2; Zhang, B. H.1,2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 857页码:10 |
| ISSN号 | 0921-5093 |
| 关键词 | Ti2AlNb-Based alloy Heat treatment Microstructures Tensile properties Fracture toughness |
| DOI | 10.1016/j.msea.2022.144052 |
| 通讯作者 | Zhao, Z. B.(zbzhao@imr.ac.cn) |
| 英文摘要 | In this study, microstructure evolution, tensile and fracture behaviors of Ti-22Al-24Nb-0.5Mo alloy processed under different heat treatment processing routes were investigated systematically. The results revealed the ex-istence of bimodal-size microstructures of the primary O lamellae and the secondary acicular O phase. The strength and ductility of alloy specimens were optimized by accommodating the volume fractions and mor-phologies of the precipitates. With the increase of the solution temperature, more acicular O phase precipitated out, which led to the increase of the yield strength and ultimate tensile strength. It was observed that the acicular O phase led to the increase of the strength at elevated temperature without sacrificing plasticity. Owing to the improvement of microscopic strain homogeneity under coupled actions of stress and high temperature, the tensile fracture mode changed from quasi-cleavage to ductile transgranular creep fracture. The fracture tough-ness of this alloy was determined by the B2 phase and the acicular O phase. It was evaluated that the fracture toughness reduced with a higher volume fraction of the acicular O phase, which in turn affected the contiguity of the B2 matrix. Considering this, balanced strength and toughness were achieved by tailoring the relative contents of the B2 and acicular O phase. |
| 资助项目 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; [51801213] ; [2020193] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000875721200002 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176347]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Z. B. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, N.,Zhao, Z. B.,Sun, H.,et al. Effects of heat treatment on microstructure evolution and mechanical properties of Ti-22Al-24Nb-0.5Mo alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,857:10. |
| APA | Li, N..,Zhao, Z. B..,Sun, H..,Zhou, T. Y..,Wang, Q. J..,...&Zhang, B. H..(2022).Effects of heat treatment on microstructure evolution and mechanical properties of Ti-22Al-24Nb-0.5Mo alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,857,10. |
| MLA | Li, N.,et al."Effects of heat treatment on microstructure evolution and mechanical properties of Ti-22Al-24Nb-0.5Mo alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 857(2022):10. |
入库方式： OAI收割
来源：金属研究所
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