Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture | |
Bai YJ(白云建)1,2; Li YD(李亚东)1,2; Wang YJ(王云江)1,3; Zhang K(张坤)1,2; Jiang QY(姜泉宇)1,2; Liu ZS(刘子尚)1,2; Hu, Zheng4; Wei BC(魏炳忱)1,2 | |
发表期刊 | INTERNATIONAL JOURNAL OF PLASTICITY |
2023-11-01 | |
卷号 | 170页码:18 |
ISSN | 0749-6419 |
摘要 | Laminated structures have the potential to enhance the performance of high-entropy alloys (HEAs) by providing intriguing interface strengthening. However, laminated HEA designs are uncommon due to the challenges posed by the relatively poor machinability of HEAs. In this study, we successfully fabricate a CoCrNi-Fe50Mn30Co10Cr10 laminated HEA using additive manufacturing technique, incorporating a unique Mortise-Tenon architecture within the alloy. The laminated HEA introduces a novel wavy-shaped interface alongside the conventional flat-shaped interfaces. Tensile tests reveal that the laminated HEA exhibits an exceptional combina-tion of strength and ductility. The measured yield strength exceeds the predicted value based on the rule-of-mixture principle by approximately 36.5 %. This enhancement is attributed to the extra strengthening resulting from the local chemical variation near the heterogeneous interfaces. Interestingly, the wavy-shaped interface has a larger local-chemical-variation zone than the flat-shaped interface, which can trigger more strong interface-dislocation interactions and therefore remarkable strengthening. The Mortise-Tenon architecture not only provides extra interface strengthening, surpassing the yield strength of the two monolithic HEAs, but also preserves the excellent work hardening ability in the early stage of deformation, enabling reasonable ductility. Remarkably, the interface strengthening is comparable in magnitude to dislocation strengthening, contributing to approximately 23 % of the overall yield strength. These findings highlight the potential of laminated HEA designs and the associated interface strengthening as promising strategies for enhancing mechanical performance. |
关键词 | High entropy alloy Laminated structure design Additive manufacturing Interface strengthening Local chemical variation |
DOI | 10.1016/j.ijplas.2023.103777 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:001105765400001 |
关键词[WOS] | SHORT-RANGE ORDER ; DISLOCATION ; DUCTILITY ; MICROSTRUCTURE ; PLASTICITY ; MECHANISM ; SIZE |
WOS研究方向 | Engineering ; Materials Science ; Mechanics |
WOS类目 | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
资助项目 | National Natural Science Foundation of China[12272392] ; National Natural Science Foundation of China[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040303] ; Innovation Program[237099000000170004] |
项目资助者 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Innovation Program |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/93397 |
专题 | 微重力重点实验室 非线性力学国家重点实验室 |
通讯作者 | Zhang K(张坤); Wei BC(魏炳忱) |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 4.China North Vehicle Res Inst, Sci & Technol Vehicle Transmiss Lab, Beijing 100072, Peoples R China |
推荐引用方式 GB/T 7714 | Bai YJ,Li YD,Wang YJ,et al. Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2023,170:18. |
APA | Bai YJ.,Li YD.,Wang YJ.,Zhang K.,Jiang QY.,...&Wei BC.(2023).Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture.INTERNATIONAL JOURNAL OF PLASTICITY,170,18. |
MLA | Bai YJ,et al."Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture".INTERNATIONAL JOURNAL OF PLASTICITY 170(2023):18. |
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