Precipitate evolution and strengthening behavior during aging process in a 2.5 GPa grade maraging steel
文献类型：期刊论文
| 作者 | Niu, Mengchao1,2; Zhou, Gang2; Wang, Wei2,3; Shahzad, M. Babar2; Shan, Yiyin2,3; Yang, Ke2 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2019-10-15 |
| 卷号 | 179页码:296-307 |
| 关键词 | Maraging steel Precipitation hardening Microstructure evolution Mechanical behavior |
| ISSN号 | 1359-6454 |
| DOI | 10.1016/j.actamat.2019.08.042 |
| 通讯作者 | Wang, Wei(wangw@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn) |
| 英文摘要 | Development of precipitation strengthening steels with ultrahigh strength and high ductility requires thorough understanding of nanoscale precipitation mechanisms. In this study, atom probe tomography (APT), HRTEM and first-principles calculations were used to reveal an interesting co-precipitation mechanism of Ni3Ti and Mo-rich nanoparticles in a 2.5 GPa grade maraging steel. The Ni-Ti rich clusters preferentially nucleate from the supersaturated solid solution and grow into Ni3Ti with extension of aging time, meanwhile the rejection of Mo atoms leads to heterogeneous precipitation of Mo-rich nanoparticles adjacent to the Ni3Ti particles and finally forms a core-shell structure along with Ni3Ti phase. Calculations of interaction energy between alloying elements in different aging process exhibit that the preferential formation of Ni-Ti rich cluster is due to the low interaction energy between Ni and Ti atoms, however, the Ni-Ti cluster is only a transitional phase, and when stable Ni3Ti is formed, Mo atoms are rejected from Ni3Ti to form a core-shell structure along with Ni3Ti precipitates. Finally, four modified theoretical prediction models are introduced to describe the yield strength as a function of microstructure and precipitates characteristics of the experimental steel. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 资助项目 | Youth Innovation Promotion Association of Chinese Academy of Sciences[2017233] ; Innovation Project of Institute of Metal Research[2015-ZD04] ; National Natural Science Foundation of China Research Fund for International Young Scientists[51750110515] ; National Natural Science Foundation of China[51472249] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000488417400027 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Youth Innovation Promotion Association of Chinese Academy of Sciences ; Innovation Project of Institute of Metal Research ; National Natural Science Foundation of China Research Fund for International Young Scientists ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/135765]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Wei; Yang, Ke |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Mengchao,Zhou, Gang,Wang, Wei,et al. Precipitate evolution and strengthening behavior during aging process in a 2.5 GPa grade maraging steel[J]. ACTA MATERIALIA,2019,179:296-307. |
| APA | Niu, Mengchao,Zhou, Gang,Wang, Wei,Shahzad, M. Babar,Shan, Yiyin,&Yang, Ke.(2019).Precipitate evolution and strengthening behavior during aging process in a 2.5 GPa grade maraging steel.ACTA MATERIALIA,179,296-307. |
| MLA | Niu, Mengchao,et al."Precipitate evolution and strengthening behavior during aging process in a 2.5 GPa grade maraging steel".ACTA MATERIALIA 179(2019):296-307. |
入库方式： OAI收割
来源：金属研究所
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