Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion
文献类型：期刊论文
| 作者 | Wang, Shidong1; Wu, Wenhua1; Sun, Yue2; Yang, Zhigang1; Sha, Gang2; Wang, Wei3; Jiao, Zengbao4; Chen, Hao1 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 252页码:7 |
| 关键词 | Maraging steel Precipitation Ultrahigh strength Laser powder bed fusion |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2024.116245 |
| 通讯作者 | Chen, Hao(hao.chen@mail.tsinghua.edu.cn) |
| 英文摘要 | In high-molybdenum (Mo) maraging steels, the formation of coarse Mo-enriched precipitates during conventional hot processing can significantly compromise both strength and ductility. In this contribution, we utilized the laser powder bed fusion (L-PBF) technique to produce a high-Mo maraging steel with a nominal chemical composition of Fe-13Ni-12Co-10Mo-1W-1Ti (wt.%). Notably, the ultrafast cooling rate inherent to L-PBF successfully suppresses the formation of coarse Mo-enriched precipitates. The co-precipitation of high-density Ni3Ti and Mo-enriched nanoprecipitates within the direct-aged martensitic matrix was observed. As a result, despite containing -16% soft reverted austenite, the direct-aged samples exhibit an ultrahigh yield strength (YS) of 2.34 GPa and an ultrahigh ultimate tensile strength (UTS) of -2.57 GPa, with an acceptable uniform elongation (UE) of around 2.7%. This work may provide a new pathway for the development of ultrahigh-strength maraging steels. |
| 资助项目 | National Key R&D program of China[2022YFB3705200] ; National Natural Science Foundation of China[52171008] ; National Natural Science Foundation of China[51922054] ; Tsinghua University Initiative Scientific Research Program[20233080002] ; Sino-German Center[M-0319] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001261144300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R&D program of China ; National Natural Science Foundation of China ; Tsinghua University Initiative Scientific Research Program ; Sino-German Center |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Hao |
| 作者单位 | 1.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat, Minist Educ, Beijing, Peoples R China 2.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Sch Mat Sci & Engn, Nanjing, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang, Peoples R China 4.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shidong,Wu, Wenhua,Sun, Yue,et al. Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion[J]. SCRIPTA MATERIALIA,2024,252:7. |
| APA | Wang, Shidong.,Wu, Wenhua.,Sun, Yue.,Yang, Zhigang.,Sha, Gang.,...&Chen, Hao.(2024).Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion.SCRIPTA MATERIALIA,252,7. |
| MLA | Wang, Shidong,et al."Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion".SCRIPTA MATERIALIA 252(2024):7. |
入库方式： OAI收割
来源：金属研究所
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