Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy

doi:10.1016/j.msea.2024.147430

IMR OpenIR

	Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy
	Fang, Chao 1,2; Qiu, Jianke 1,2; Zhang, Mingjie 1,2; Zhang, Mengmeng 1,2; Ma, Yingjie 1,2; Lei, Jiafeng 1,2; Yang, Rui 1,2
通讯作者	Qiu, Jianke(jkqiu@imr.ac.cn)
	2024-12-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	918 页码:15
摘要	In this work, the dwell sensitivity of the TC11 alloy was evaluated as a function of alpha(p) contents obtained by two different heat treatment routes and peak applied stresses. The equiaxed microstructure had higher alpha(p) content and sharper macrozones, with consequently exhibiting higher dwell sensitivity than the bimodal microstructure. In order to elucidate the dwell fatigue cracking mechanism, the electron back-scattering diffraction and quantitative tilt fractography techniques were employed to determine the crystallographic and spatial orientations of the facets on the fractures. The results indicated that the initiation facets nearly cracked along the basal plane, whereas the propagation facets deviated from the basal plane with an average angle of similar to 13 degrees for both microstructures. Based on the measurements of the facet orientation, a method was proposed that the macrozone filtered with a threshold of 35 degrees could be used as a reliable microstructure characteristic for assessing the dwell sensitivity and predicting the crack initiation sites in TC11 alloy. Specifically, a basal plane of soft-oriented grain in this hard macrozone, which had the largest c-axis inclination and basal Schmid factor compared to its surrounding grains, was more prone to the crack initiation.
关键词	TC11 alloy Dwell fatigue Macrozone Facets
资助者	National Key R&D Program of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China
DOI	10.1016/j.msea.2024.147430
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2022YFB3708300] ; National Key R&D Program of China[2021YFC2800500] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS[2022188] ; National Natural Science Foundation of China[91960202] ; National Natural Science Foundation of China[51701219]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001349421800001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191206
专题	中国科学院金属研究所
通讯作者	Qiu, Jianke
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Fang, Chao,Qiu, Jianke,Zhang, Mingjie,et al. Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,918:15.
APA	Fang, Chao.,Qiu, Jianke.,Zhang, Mingjie.,Zhang, Mengmeng.,Ma, Yingjie.,...&Yang, Rui.(2024).Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,918,15.
MLA	Fang, Chao,et al."Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 918(2024):15.