Effect of stress ratio on high cycle fatigue behavior of TNM-TiAl alloy

doi:10.1111/ffe.13835

	Effect of stress ratio on high cycle fatigue behavior of TNM-TiAl alloy
	Sun, Guanze 4; Cao, Rui 4; Zhou, Xin 4; Jiang, Xiao Xia 2; Wang, Hongwei 1,3
刊名	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
	2022-09-01
关键词	fracture mechanism high cycle fatigue stress ratio TNM-TiAl alloy
ISSN号	8756-758X
DOI	10.1111/ffe.13835
英文摘要	In order to investigate the effect of stress ratio on room temperature high-cycle fatigue life of Ti-43.5Al-4Nb-1Mo-0.1B alloy, high-cycle fatigue life test of TNM-TiAl alloy at stress ratio of -1, -0.5, 0.1, 0.5, 0.8, and 1 was performed on the universal testing machine. The fracture mechanism of TNM-TiAl alloy under different stress ratios was determined by observation and analysis of microstructure and fracture surface by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and optical microscope (OM). The results show that fatigue life of TNM-TiAl alloy with different stress ratios is mainly affected by the mean stress and stress amplitude. The fatigue life decreases with the increase of the stress amplitude and with the decrease of the mean stress. When the stress amplitude is constant, the higher the stress ratio is, the higher the mean stress in the loading process is, the lower the fatigue life is. The sensitivity of the stress amplitude of TNM-TiAl alloy gradually increases with the increase of the stress ratio. The different cracking mechanism and fracture mechanisms at various stress ratio are revealed.
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000852977800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159847]
专题	材料科学与工程学院
作者单位	1.Beijing CISRI Gaona Mat Technol Co Ltd, Beijing, Peoples R China; 2.Ningxia Univ, Sch Mech Engn, Yinchuan, Ningxia, Peoples R China; 3.Cent Iron & Steel Res Inst, Beijing Key Lab Adv High Temp Mat, Beijing, Peoples R China 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Dept Mat Sci & Engn, Langongping 287 Rd, Lanzhou 730050, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	Sun, Guanze,Cao, Rui,Zhou, Xin,et al. Effect of stress ratio on high cycle fatigue behavior of TNM-TiAl alloy[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2022.
APA	Sun, Guanze,Cao, Rui,Zhou, Xin,Jiang, Xiao Xia,&Wang, Hongwei.(2022).Effect of stress ratio on high cycle fatigue behavior of TNM-TiAl alloy.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES.
MLA	Sun, Guanze,et al."Effect of stress ratio on high cycle fatigue behavior of TNM-TiAl alloy".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2022).