Influence of microstructure on the fatigue crack growth behavior of a near-alpha TWIP Ti alloy

doi:10.1016/j.matchar.2021.111208

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	Influence of microstructure on the fatigue crack growth behavior of a near-alpha TWIP Ti alloy
	Wang, Qi 2,4; Ren, Junqiang 1; Zhang, Binbin 2; Xin, Chao 3; Wu, Yukun 2; Ye, Miao 4
刊名	Materials Characterization
	2021-08-01
卷号	178
关键词	Aluminum alloys Cracks Deformation Fatigue of materials Lamellar structures Molybdenum alloys Plasticity Tin alloys Titanium alloys Twinning Bi-modal structures Deformation twin Equiaxed structures Fatigue crack growth behavior Fatigue cracks Fatigue cracks propagation High resistance Ti alloys Ti-5111 Twin inducing plasticity
ISSN号	10445803
DOI	10.1016/j.matchar.2021.111208
英文摘要	The fatigue crack growth (FCG) behaviors of a twin inducing plasticity (TWIP) Ti-5Al-1 V-Sn-1Zr-0.8Mo (Ti5111) alloy with three typical microstructures were investigated. Compared with the equiaxed and bimodal structures, the lamellar structure exhibited a higher resistance to the FCG rate, but it displayed a lower strength and elongation to failure. Many 101¯2101¯1 deformation twins (DTs) spanning multiple α/β layers were observed in the lamellar structure near the FCG path. The same type of DT was also observed in the equiaxed structure, although its density was significantly lower than that of the lamellar structure, and no DTs were found in the bimodal structure. The higher resistance to FCG of the lamellar structure results from its large effective microstructural unit size (α colony), which is most favorable to deflecting cracks and increasing crack path tortuosity, and is associated with the blocking effect of deformation twin boundaries on crack propagation. © 2021 Elsevier Inc.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Inc.
WOS记录号	WOS:000744346200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151119]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Luoyang Ship Materials Research Institute, Luoyang; 471039, China; 3.Northwest Institute for Nonferrous Metal Research, Xi'an; 710016, China 4.Huanghuai University, Zhumadian; Henan; 463000, China;
推荐引用方式 GB/T 7714	Wang, Qi,Ren, Junqiang,Zhang, Binbin,et al. Influence of microstructure on the fatigue crack growth behavior of a near-alpha TWIP Ti alloy[J]. Materials Characterization,2021,178.
APA	Wang, Qi,Ren, Junqiang,Zhang, Binbin,Xin, Chao,Wu, Yukun,&Ye, Miao.(2021).Influence of microstructure on the fatigue crack growth behavior of a near-alpha TWIP Ti alloy.Materials Characterization,178.
MLA	Wang, Qi,et al."Influence of microstructure on the fatigue crack growth behavior of a near-alpha TWIP Ti alloy".Materials Characterization 178(2021).