| Microstructure and Strength-Toughness of a Cu-Contained Maraging Stainless Steel | |
| Wang Bin1; Niu Mengchao2; Wang Wei3; Jiang Tao4; Luan Junhua5; Yang Ke3 | |
| 通讯作者 | Wang Wei(wangw@imr.ac.cn) ; Jiang Tao(13810461605@139.com) |
| 2023-05-01 | |
| 发表期刊 | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| 卷号 | 59期号:5页码:636-646 |
| 摘要 | An increase in strength often leads to a decrease in the ductility and toughness of maraging stainless steels; this phenomenon is known as the strength-ductility/toughness trade-off dilemma in structural materials. Some studies have found that the introduction of submicro/nanometer-sized retained or reverted austenite could mitigate the strength-ductility/toughness trade-off of high-strength maraging stainless steels. In this work, a novel strategy to accelerate austenite reversion by Cu addition in a Fe-Ni-Mo-Co-Cr maraging stainless steel was studied. In addition, the aging behavior and its effects on the mechanical properties of a Cu-containing Fe-Cr-Co-Ni-Mo maraging stainless steel were systematically studied. Transmission electron microscope characterizations showed that Cu- and Mo-rich phases precipitated from the steel matrix in sequence during the aging process; more specifically, a part of Mo-rich phase nucleated at the Cu-rich phase and then grew. Moreover, along with the segregation of Cu and Ni, reverted austenite was formed gradually. With an increase in the aging time, the stability of the reverted austenite increased, resulting in a substantial increase in its toughness. After aging for 90 h, the yield and tensile strengths of the steel reached 1270 and 1495 MPa, respectively, and the impact energy and fracture toughness were 81 J and 102 MPa.m(1/2), respectively, showing an excellent match of strength and toughness compared with commercial maraging stainless steels. |
| 关键词 | maraging stainless steel reverted austenite TRIP effect strength and toughness |
| 资助者 | National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| DOI | 10.11900/0412.1961.2021.00599 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[51201160] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017233] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| WOS类目 | Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:000971778800005 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/177454 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Wang Wei; Jiang Tao |
| 作者单位 | 1.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450003, Peoples R China 2.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong 999077, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.AECC Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China 5.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Bin,Niu Mengchao,Wang Wei,et al. Microstructure and Strength-Toughness of a Cu-Contained Maraging Stainless Steel[J]. ACTA METALLURGICA SINICA,2023,59(5):636-646. |
| APA | Wang Bin,Niu Mengchao,Wang Wei,Jiang Tao,Luan Junhua,&Yang Ke.(2023).Microstructure and Strength-Toughness of a Cu-Contained Maraging Stainless Steel.ACTA METALLURGICA SINICA,59(5),636-646. |
| MLA | Wang Bin,et al."Microstructure and Strength-Toughness of a Cu-Contained Maraging Stainless Steel".ACTA METALLURGICA SINICA 59.5(2023):636-646. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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