Microstructure and mechanical properties of Ti3Zr1.5Nb(1-x)V(1+x)Al0.25 (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) refractory complex concentrated alloys

doi:10.1016/j.jallcom.2024.176118

IMR OpenIR

	Microstructure and mechanical properties of Ti₃Zr_1.5Nb_(1-x)V_(1+x)Al_0.25 (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) refractory complex concentrated alloys
	Zeng, Shuai 1,2,3; Zhou, Yongkang 1,2,3; Zhao, Bowen 4; Chen, Jingqian 1,2,3; Liu, Xiaoya 1,2,3; Fu, Huameng 1,3; Wang, Aiming 1,3; Zhang, Haifeng 1,3,5; Zhu, Zhengwang 1,3,5
通讯作者	Zhu, Zhengwang(zwzhu@imr.ac.cn)
	2024-11-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	1005 页码:9
摘要	Refractory complex concentrated alloys (RCCAs) have garnered significant attention due to their exceptionally high yield strengths, yet their practical applications are severely limited by high density and inherent brittleness. This study seeks to develop novel RCCA systems with enhanced strength and ductility by strategically modulating Group VB elements. The synergistic effects of Nb and V on the as-cast microstructure and mechanical properties at both room and elevated temperatures of the Ti3Zr1.5Nb(1-x)V(1+x)Al0.25 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) RCCAs were investigated in detail. Alloys with x <= 0.4 exhibit a single body-centered cubic (BCC) phase structure, while further V additions leads to the precipitation of a hexagonal ZrV2-type C14 Laves phase and even a V-enriched BCC phase in the interdendritic regions. With the increase in V concentration, the alloys display progressively enhanced strength. Notably, the Ti3Zr1.5Nb0.6V1.4Al0.25 alloy demonstrates optimal mechanical properties, achieving a tensile yield strength of similar to 1024 MPa, a plastic strain of similar to 12 % at room temperature, and a compression yield strength of similar to 689 MPa at 600 degree celsius. However, the precipitation of brittle phases along grain boundaries results in reduced plasticity in alloys with high V concentrations. The high yield strength of these alloys is primarily attributed to the intrinsic yield strength of the constituent elements, grain boundary strengthening, and solution strengthening induced by severe lattice distortion. This study offers a paradigm for understanding the impact of alloy composition on the structure and properties of RCCAs.
关键词	Refractory complex concentrate alloy Microstructures Mechanical properties Strengthening mechanism
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.jallcom.2024.176118
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52074257] ; Fundamental Research Funds for the Central Universities[N2325008]
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:001302636500001
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/321006/189479
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.Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310058, Peoples R China 5.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Shuai,Zhou, Yongkang,Zhao, Bowen,et al. Microstructure and mechanical properties of Ti₃Zr_1.5Nb_(1-x)V_(1+x)Al_0.25 (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) refractory complex concentrated alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,1005:9.
APA	Zeng, Shuai.,Zhou, Yongkang.,Zhao, Bowen.,Chen, Jingqian.,Liu, Xiaoya.,...&Zhu, Zhengwang.(2024).Microstructure and mechanical properties of Ti₃Zr_1.5Nb_(1-x)V_(1+x)Al_0.25 (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) refractory complex concentrated alloys.JOURNAL OF ALLOYS AND COMPOUNDS,1005,9.
MLA	Zeng, Shuai,et al."Microstructure and mechanical properties of Ti₃Zr_1.5Nb_(1-x)V_(1+x)Al_0.25 (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) refractory complex concentrated alloys".JOURNAL OF ALLOYS AND COMPOUNDS 1005(2024):9.