Comparative study of crack growth behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy

doi:10.1016/j.jallcom.2019.02.302

	Comparative study of crack growth behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy
	Wang, Q.1; Ren, J. Q.2 ; Wu, Y. K.1; Jiang, P.1; Li, J. Q.1; Sun, Z. J.1; Liu, X. T.2
	2019-06-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	789 页码:249-255
摘要	The fatigue crack growth (FCG) behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy were investigated comparably. The FCG rate of bi-lamellar structure is lower than that of fully-lamellar structure, especially at the low stress intensity factor range (Delta K < 40 MPa m(1/2)). The fatigue crack growth path, deformed sub-structure and surface damage morphology were observed by SEM and TEM. For the fully-lamellar structure, because the same orientation of alpha lamellae and Burgers relationship between alpha and beta lamellas in the alpha colony, the fatigue cracks often grow along a straight line in the alpha colony by cutting the beta lamellas. For the bi-lamellar structure, because the resistance of secondary alpha (alpha(s)) precipitations in the beta lamellas to dislocation slips, the frequency of crack propagation along the alpha/beta interface increases. The fatigue cracks often grow along a zigzag in the alpha colony, which results in the fatigue crack growth path is more circuitous than that of the fully-lamellar structure in alpha colonies, and this is the main reason that the FCG rate of bi-lamellar structure is lower than that of fully-lamellar structure. This research has an important engineering significance to improve the low cycle fatigue (LCF) performance of the coarse lamellar structured Ti alloys. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Titanium alloy Fatigue crack growth Lamellar structure
DOI	10.1016/j.jallcom.2019.02.302
收录类别	SCI
语种	英语
资助项目	Key projects to strengthen the foundation[YK180701] ; National Natural Science Foundation of China[51701189][51775055][51601084]
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:000464542700029
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/31796
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
通讯作者	Wang, Q.; Ren, J. Q.
作者单位	1.Luoyang Ship Mat Res Inst, Luoyang 471003, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Wang, Q.,Ren, J. Q.,Wu, Y. K.,et al. Comparative study of crack growth behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,789:249-255.
APA	Wang, Q..,Ren, J. Q..,Wu, Y. K..,Jiang, P..,Li, J. Q..,...&Liu, X. T..(2019).Comparative study of crack growth behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy.JOURNAL OF ALLOYS AND COMPOUNDS,789,249-255.
MLA	Wang, Q.,et al."Comparative study of crack growth behaviors of fully-lamellar and bi-lamellar Ti-6Al-3Nb-2Zr-1Mo alloy".JOURNAL OF ALLOYS AND COMPOUNDS 789(2019):249-255.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Wang-2019-Comparativ（2851KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载