Achieving dislocation-precipitation strengthening synergy in additively manufactured medium-entropy alloy via cyclic deep cryogenic strategy
文献类型：期刊论文
| 作者 | Liu, Bo1,2; Han, Dong2; Li, Tianrun2; Cui, Jingping2; Zhang, Ziwei2; Han, Guofeng3; Wang, Xiaoming3; Yang, Baijun2; Wang, Jianqiang2 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 256页码:7 |
| 关键词 | Additive manufacturing Cyclic deep cryogenic strategy High-entropy alloy Dislocation strengthening Strength |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2024.116441 |
| 通讯作者 | Wang, Xiaoming(uwangxm@126.com) ; Yang, Baijun(bjyang@imr.ac.cn) ; Wang, Jianqiang(jqwang@imr.ac.cn) |
| 英文摘要 | A problem has recently been highlighted in the additively manufactured (AMed) L1(2)-strengthened high/mediumentropy alloys (H/MEAs), where the dislocation strengthening effect will be severely weakened due to the inevitable dislocation recovery that occurs during the aging process. To address this, a cyclic deep cryogenic strategy (CDCS) towards the dislocation-precipitation strengthening synergy is proposed. Besides dislocations, this strategy can introduce dense intersecting stacking faults, thus effectively enhancing the thermal stability of dislocations during aging due to the pinning effect of Lomer-Cottrell locking. The existence of these high-density defects further ensures the uniform precipitation of L1(2) phase. Significantly, the CDCS causes a substantial similar to 40% increase in the yield strength of the (CoCrNi)(94)Al3Ti3 MEA sample without compromising the ductility, in which the contribution of dislocation strengthening is doubled. This work provides a pathway for obtaining high-performance AMed H/MEAs, especially L1(2)-strengthened H/MEAs. |
| 资助项目 | National Key Research & Development Program of China[2022YFF0609002] ; National Natural Science Foundation of China[U1908219] ; National Natural Science Foundation of China[52171163] ; National Natural Science Foundation of China[52271157] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2] ; Key Research & Development Plan of Jiangxi Province[20192ACB80001] ; Natural Science Foundation of Liaoning Province[2022-BS-001] ; China Postdoctoral Science Foundation[2022M713210] ; Shenyang National Laboratory for Materials Science |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001349834500001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key Research & Development Program of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research & Development Plan of Jiangxi Province ; Natural Science Foundation of Liaoning Province ; China Postdoctoral Science Foundation ; Shenyang National Laboratory for Materials Science |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Xiaoming; Yang, Baijun; Wang, Jianqiang |
| 作者单位 | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Natl key Lab Remfg, Beijing 100072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Bo,Han, Dong,Li, Tianrun,et al. Achieving dislocation-precipitation strengthening synergy in additively manufactured medium-entropy alloy via cyclic deep cryogenic strategy[J]. SCRIPTA MATERIALIA,2025,256:7. |
| APA | Liu, Bo.,Han, Dong.,Li, Tianrun.,Cui, Jingping.,Zhang, Ziwei.,...&Wang, Jianqiang.(2025).Achieving dislocation-precipitation strengthening synergy in additively manufactured medium-entropy alloy via cyclic deep cryogenic strategy.SCRIPTA MATERIALIA,256,7. |
| MLA | Liu, Bo,et al."Achieving dislocation-precipitation strengthening synergy in additively manufactured medium-entropy alloy via cyclic deep cryogenic strategy".SCRIPTA MATERIALIA 256(2025):7. |
入库方式： OAI收割
来源：金属研究所
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