A method of quasi in-situ EBSD observation for microstructure and damage evolution in fatigue and dwell fatigue of Ti alloys

doi:10.1016/j.ijfatigue.2023.107897

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	A method of quasi in-situ EBSD observation for microstructure and damage evolution in fatigue and dwell fatigue of Ti alloys
	Sun, Chengqi 2,3; Sun, Jian 2,3; Chi, Weiqian 1; Wang, Jiaxuan 2,3; Wang, Wenjing 1
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2023-11-01
卷号	176 页码:20
关键词	Ti-6Al-4V ELI titanium alloy Low cycle fatigue Dwell fatigue Deformation twinning Failure mechanism
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2023.107897
通讯作者	Sun, Chengqi(scq@lnm.imech.ac.cn) ; Wang, Wenjing(wjwang@bjtu.edu.cn)
英文摘要	A method of quasi in-situ electron backscattered diffraction observation is developed for investigating microstructure and damage evolution of Ti-6Al-4V ELI alloy under cyclic loadings. It indicates that the slip tends to occur in & alpha; grains with bigger Schmid factors (SFs) for basal slip or prismatic slip and twinning occurs in & alpha; grains with SFs not bigger than 0.2 for prismatic slip for both fatigue and dwell fatigue. The plastic strain caused by dwell stress could restrain the sliding or cleavage induced microcrack growth. Subgrain formation in & alpha; grains due to twinning and dislocation sliding are also captured during cyclic loadings.
资助项目	National Natural Science Foundation of China[11988102]
WOS关键词	SENSITIVE FATIGUE ; TITANIUM-ALLOY ; STRESS RATIO ; TEXTURE ; DEFORMATION ; NUCLEATION ; CREEP
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:001062166800001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92936]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Sun, Chengqi; Wang, Wenjing
作者单位	1.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techno, Minist Educ, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Chengqi,Sun, Jian,Chi, Weiqian,et al. A method of quasi in-situ EBSD observation for microstructure and damage evolution in fatigue and dwell fatigue of Ti alloys[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,176:20.
APA	Sun, Chengqi,Sun, Jian,Chi, Weiqian,Wang, Jiaxuan,&Wang, Wenjing.(2023).A method of quasi in-situ EBSD observation for microstructure and damage evolution in fatigue and dwell fatigue of Ti alloys.INTERNATIONAL JOURNAL OF FATIGUE,176,20.
MLA	Sun, Chengqi,et al."A method of quasi in-situ EBSD observation for microstructure and damage evolution in fatigue and dwell fatigue of Ti alloys".INTERNATIONAL JOURNAL OF FATIGUE 176(2023):20.