Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases

doi:10.1016/j.msea.2024.147062

IMR OpenIR

	Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases
	Chen, Jingqian 1,2,3; Zhou, Yongkang 1,2,3; Yu, Lili 4; Zeng, Shuai 1,2,3; Wang, Aiming 1,3; Fu, Huameng 1,3; Zhang, Hongwei 1,3; Zhang, Haifeng 1,3,5; Zhu, Zhengwang 1,3,5
通讯作者	Zhu, Zhengwang(zwzhu@imr.ac.cn)
	2024-10-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	913 页码:11
摘要	The sigma phase is a well-known harmful phase in transition metal alloys, leading to severe embrittlement due to its inherent brittleness. However, in this work, we develop a new strategy to obtain enhanced strength-ductility combination via the synergistic effects of interlocking co-precipitation of the sigma and L21 1 phases in Fe40Ni30Cr20Al5Ti5 40 Ni 30 Cr 20 Al 5 Ti 5 (at. %) high-entropy alloy (HEA). This HEA exhibits a good strength-ductility combination after aging treatment (800 degrees C for 4h), with a yield strength (YS) of about 920 MPa and an ultimate tensile strength (UTS) of about 1300 MPa while maintaining a total elongation (TE) of 24 %. It is attributed to the interlocking co-precipitation of the sigma and L21 1 phases with equal volume fractions into the face-centered cubic (FCC) matrix through thermomechanical treatment. During the tensile deformation, the softer L21 1 phase coordinates the deformation around the sigma phase, suppresses the local stress concentration, and achieves a stable high work hardening capability, as well as stacking faults (SFs) networks and density Lomer-Cottrell (L-C) locks, contributes to the excellent strain hardening capacity and thus obtains the enhanced strength-ductility combination in the HEA. This study will provide a new strategy to obtain enhanced strength-ductility combination for alloys containing brittle and hard topologically close-packed (TCP) phases, such as the sigma phases.
关键词	High entropy alloys (HEAs) Sigma phase Strength-ductility Mechanical properties Strengthening mechanisms Deformation behavior
资助者	National Natural Science Foundation of China ; Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.msea.2024.147062
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LY- JSC023] ; Fundamental Research Funds for the Central Universities[N2325008]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001293301400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189064
专题	中国科学院金属研究所
通讯作者	Zhu, Zhengwang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Qingdao Qingte Zhongli Automobile Axle Co Ltd, Qingdao 266000, Peoples R China 5.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jingqian,Zhou, Yongkang,Yu, Lili,et al. Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,913:11.
APA	Chen, Jingqian.,Zhou, Yongkang.,Yu, Lili.,Zeng, Shuai.,Wang, Aiming.,...&Zhu, Zhengwang.(2024).Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,913,11.
MLA	Chen, Jingqian,et al."Enhancing strength-ductility combination of Fe-Ni-Cr-Al-Ti high-entropy alloys via co-precipitation of sigma and L21 phases".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 913(2024):11.