EFFECTS OF RESIDUAL STRESSES ON THE HIGH CYCLE FATIGUE BEHAVIOR OF Ti-6Al-4V

被引：0
|
作者：
Li, Yu-Jia [1 ]
Xuan, Fu-Zhen [1 ]
Wang, Zheng-Dong [1 ]
Tu, Shan-Tung [1 ]
机构：
[1] E China Univ Sci & Technol, Minist Educ, Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China
来源：
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE 2010, VOL 5 | 2010年
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暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Axial force-controlled fatigue tests are conducted at various stress ratios (R) on Ti-6Al-4V specimens prepared by two different manufacturing techniques (hard turning plus polishing with and without vacuum stress relieve anneal carried out after polishing). Residual stress is measured by using X-ray diffraction. Results indicate that the surface compressive residual stress lead to an increase of fatigue limit at a given life and stress ratio. This effect decreases with increasing stress ratio R. At R=0.6, the effect of surface residual stress on fatigue limit fades away. In addition, the location of crack initiation shifts from surface to interior when the stress ratio changes from -1 to 0.6.
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页码：397 / 401
页数：5
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