材料工程Issue(2)：67-71,5.
再次喷丸周期对TC18钛合金疲劳寿命的影响
Effect of Re-shot-peening on the Fatigue Life of TC18 Titanium Alloy
王欣 1高玉魁 1王强 1宋颖刚 1陆峰1
作者信息
摘要
Abstract
The effect of re-shot-peening treatment on the residual stress and room temperature fatigue life of initially shot-peened TC18 titanium alloy was investigated. The change of surface residual stress and fatigue life after re-shot-peening were examed by X-ray diffraction and rotating-bending fatigue tester, respectively. The results show that the surface residual stress relaxed in the range of 30%-50% because of pre-fatigue test, and that re-shot-peening successfully recovered the relaxed surface residual compressive stress up to the 50%-70% of the original. Further, compared with the samples excluding re-shot-peening, fatigue life of TC18 titanium alloy can be increased by 75% when re-shot-peened after the suitable pre-fatigue cycle.关键词
预先疲劳/再次喷丸/残余应力松弛/疲劳性能Key words
pre-fatigue/ re-shot-peening relaxation of residual stress/ fatigue property分类
矿业与冶金引用本文复制引用
王欣,高玉魁,王强,宋颖刚,陆峰..再次喷丸周期对TC18钛合金疲劳寿命的影响[J].材料工程,2012,(2):67-71,5.
