文献类型：期刊文献

英文题名：Effects of residual stresses on the high cycle fatigue behavior of Ti-6Al-4V

作者：Li, Yu-Jia[1]; Xuan, Fu-Zhen[1]; Wang, Zheng-Dong[1]; Tu, Shan-Tung[1]

机构：[1] Key Laboratory of Safety Science of Pressurized System, Ministry of Education, East China University of Science and Technology, Shanghai, China

年份：2010

卷号：5

起止页码：397

外文期刊名：American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

收录：EI(收录号：20114514483291)

语种：英文

外文关键词：Titanium alloys - Vanadium alloys - X ray diffraction - High-cycle fatigue - Fatigue testing - Polishing - Ternary alloys - Aluminum alloys - Surface stress

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. Copyright ? 2010 by ASME.