A Novel BCC/B2 Structural Nb38Ti35Al15V6Cr4(TaHfMoW)2 Refractory High-Entropy Alloy with Excellent Specific Yield Strength-Plasticity Synergy

doi:10.1007/s40195-024-01805-x

IMR OpenIR

	A Novel BCC/B2 Structural Nb₃₈Ti₃₅Al₁₅V₆Cr₄(TaHfMoW)₂ Refractory High-Entropy Alloy with Excellent Specific Yield Strength-Plasticity Synergy
	Liu, Hongbin 1,2; Xing, Zhenqiang 2; Yang, Yitong 2; Pang, Jingyu 2,3; Li, Wen 1; Zhu, Zhengwang 4; Zhang, Long 2; Wang, Aimin 2; Zhang, Haifeng 4; Zhang, Hongwei 2
通讯作者	Pang, Jingyu(jypang17s@imr.ac.cn) ; Li, Wen(liwen@sylu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
	2025-01-13
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	11
摘要	Refractory high-entropy alloys (RHEAs) stand as promising candidates for the development of a new generation of high-temperature materials due to their exceptional mechanical properties. However, the inherent low ductility and high density of RHEAs have hindered their widespread adoption in industrial applications. In this study, an Nb38Ti35Al15V6Cr4(TaHfMoW)(2) RHEA with a BCC/B2 dual-phase structure is successfully developed. The RHEA exhibits excellent specific yield strength of 162.4 MPag(-1)cm(3) and 84.3 MPag(-1)cm(3) at room temperature (RT) and 800 degrees C, respectively. It was found that the pinning effect of the B2 phase induces a gradual transition in dislocation slip mode from planar slip to cross slip, homogenizing the plastic flow and resulting in excellent compression plasticity (epsilon > 50%). Additionally, the B2 phase endows the alloy with excellent yield strength at high temperatures by precipitation strengthening. Moreover, the dominated a/2 < 111 > type dislocation contributes to the alloy's superior plasticity at high temperatures.
关键词	Refractory high entropy alloy B2 phase Microstructure Mechanical property Deformation mechanism
资助者	Chinese Academy of Sciences ; National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Youth Innovation Promotion Association CAS ; IMR Innovation Fund ; Guangdong Basic and Applied Basic Research Foundation
DOI	10.1007/s40195-024-01805-x
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences[ZDBS-LY-JSC023] ; National Natural Science Foundation of China[52404370] ; Natural Science Foundation of Liaoning Province[2023-BS-012] ; Youth Innovation Promotion Association CAS[2021188] ; IMR Innovation Fund[2023-PY16] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515111060]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001397167900001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
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/321006/180951
专题	中国科学院金属研究所
通讯作者	Pang, Jingyu; Li, Wen; Zhang, Hongwei
作者单位	1.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Foshan Sinotech Ind Technol Res Inst, Foshan 528000, Peoples R China 4.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hongbin,Xing, Zhenqiang,Yang, Yitong,et al. A Novel BCC/B2 Structural Nb₃₈Ti₃₅Al₁₅V₆Cr₄(TaHfMoW)₂ Refractory High-Entropy Alloy with Excellent Specific Yield Strength-Plasticity Synergy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2025:11.
APA	Liu, Hongbin.,Xing, Zhenqiang.,Yang, Yitong.,Pang, Jingyu.,Li, Wen.,...&Zhang, Hongwei.(2025).A Novel BCC/B2 Structural Nb₃₈Ti₃₅Al₁₅V₆Cr₄(TaHfMoW)₂ Refractory High-Entropy Alloy with Excellent Specific Yield Strength-Plasticity Synergy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA	Liu, Hongbin,et al."A Novel BCC/B2 Structural Nb₃₈Ti₃₅Al₁₅V₆Cr₄(TaHfMoW)₂ Refractory High-Entropy Alloy with Excellent Specific Yield Strength-Plasticity Synergy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2025):11.