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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

文献类型：期刊论文

作者Li, Zhenglong1,2; Pang, Jingyu1,3; Liu, Hongbin2; Zhu, Zhengwang4; Zhang, Long1; Wang, Aimin1; Li, Wen2; Zhang, Haifeng4; Zhang, Hongwei1
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2024-11-15
卷号1005页码:11
关键词Refractory high entropy alloys Microstructural evolution Precipitation strengthening Mechanical properties
ISSN号0925-8388
DOI10.1016/j.jallcom.2024.176075
通讯作者Pang, Jingyu(jypang17s@imr.ac.cn) ; Wang, Aimin(amwang@imr.ac.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
英文摘要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.
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
语种英语
WOS记录号WOS:001301797900001
出版者ELSEVIER SCIENCE SA
资助机构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
源URL  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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