Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture

doi:10.1016/j.ijplas.2023.103777

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Wavy interface enables extra strengthening in an additively manufactured high-entropy alloy with Mortise-Tenon architecture
	Bai, Yunjian 3,4; Li, Yadong 3,4; Wang, Yun-jiang 2,4; Zhang, Kun 3,4; Jiang, Quanyu 3,4; Liu, Zishang 3,4; Hu, Zheng 1; Wei, Bingchen 3,4
刊名	INTERNATIONAL JOURNAL OF PLASTICITY
	2023-11-01
卷号	170 页码:18
关键词	High entropy alloy Laminated structure design Additive manufacturing Interface strengthening Local chemical variation
ISSN号	0749-6419
DOI	10.1016/j.ijplas.2023.103777
通讯作者	Zhang, Kun(zhangkun@imech.ac.cn) ; Wei, Bingchen(weibc@imech.ac.cn)
英文摘要	Laminated structures have the potential to enhance the performance of high-entropy alloys (HEAs) by providing intriguing interface strengthening. However, laminated HEA designs is 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.
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]
WOS关键词	SHORT-RANGE ORDER ; DISLOCATION ; DUCTILITY ; MICROSTRUCTURE ; PLASTICITY ; MECHANISM ; SIZE
WOS研究方向	Engineering ; Materials Science ; Mechanics
语种	英语
WOS记录号	WOS:001105765400001
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Innovation Program
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93396]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Zhang, Kun; Wei, Bingchen
作者单位	1.China North Vehicle Res Inst, Sci & Technol Vehicle Transmiss Lab, Beijing 100072, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Bai, Yunjian,Li, Yadong,Wang, Yun-jiang,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, Yunjian.,Li, Yadong.,Wang, Yun-jiang.,Zhang, Kun.,Jiang, Quanyu.,...&Wei, Bingchen.(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, Yunjian,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.