Combined effect of silicon doping and thermal treatment on microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy

doi:10.1016/j.jallcom.2024.176075

IMR OpenIR

	Combined effect of silicon doping and thermal treatment on microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy
	Li, Zhenglong 1,2; Pang, Jingyu 1,3; Liu, Hongbin 2; Zhu, Zhengwang 4; Zhang, Long 1; Wang, Aimin 1; Li, Wen 2; Zhang, Haifeng 4; Zhang, Hongwei 1
通讯作者	Pang, Jingyu(jypang17s@imr.ac.cn) ; Wang, Aimin(amwang@imr.ac.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
	2024-11-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	1005 页码:11
摘要	This study investigates the effects of Si doping and thermal treatment on the microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy (RHEA) with a BCC/B2 dual-phase structure. The as- cast RHEAs exhibit typical dendrite and inter-dendrite structure. Upon Si doping, eutectic M5Si3 5 Si 3 phase gradually precipitates along the grain boundaries (GBs), resulting in the increase of yield strength (YS) by over 200 MPa. After recrystallization, all the RHEAs exhibit fully recrystallized microstructures. The eutectic M5Si3 5 Si 3 phase disappears while forming nanoscale M5Si3 5 Si 3 phase distribute along GBs, thereby enhancing the mechanical properties of the RHEAs. Notably, the recrystallized RHEA with 1 at% Si exhibits favorable specific YS (SYS, 172.9 f 2.9 MPa center dot cm3 center dot g-1) center dot cm 3 center dot g-1 ) and fracture elongation (22.8 f 6.8 %), respectively. The hindrance effect of nanoscale M5Si3 5 Si 3 phase on dislocations motion and the transition from planar slip to cross-slip significantly enhance strain hardening capability and plasticity of the RHEAs. Our research findings are of constructive significance to the study of lightweight energetic structural materials.
关键词	Refractory high entropy alloys Microstructural evolution Precipitation strengthening Mechanical properties
资助者	Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province ; Youth Innovation Promotion Association CAS ; IMR Innovation Fund ; Guangdong Basic and Applied Basic Research Foundation
DOI	10.1016/j.jallcom.2024.176075
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences[ZDBS-LY-JSC023] ; 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	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001301797900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/189374
专题	中国科学院金属研究所
通讯作者	Pang, Jingyu; Wang, Aimin; Zhang, Hongwei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China 3.Foshan Sino Tech Ind Technol Res Inst, Foshan, Peoples R China 4.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhenglong,Pang, Jingyu,Liu, Hongbin,et al. Combined effect of silicon doping and thermal treatment on microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,1005:11.
APA	Li, Zhenglong.,Pang, Jingyu.,Liu, Hongbin.,Zhu, Zhengwang.,Zhang, Long.,...&Zhang, Hongwei.(2024).Combined effect of silicon doping and thermal treatment on microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy.JOURNAL OF ALLOYS AND COMPOUNDS,1005,11.
MLA	Li, Zhenglong,et al."Combined effect of silicon doping and thermal treatment on microstructures and mechanical properties of Ti 50 Nb 20 V 20 Al 10 refractory high-entropy alloy".JOURNAL OF ALLOYS AND COMPOUNDS 1005(2024):11.