机械科学与技术2012，Vol.31Issue(12)：1921-1926,6.
喷丸强化与表面完整性对TC21钛合金疲劳性能的影响
Influence of Shot Peening and Surface Integrity on Fatigue Properties of TC21 Titanium Alloy
摘要
Abstract
The influence of shot peening intensity,and surface integrity on fatigue properties of TC21 titanium alloy was studied to improve fatigue resistance of the high strength titanium alloy.The influence of shot peening on surface residual stress,surface roughness,surface morphology and surface hardness was studied by using X-ray diffraction analysis,surface profile measurement,scanning electron microscopy and microhardness instrument,etc.The mechanism of fatigue resistance improved by shot peening was also discussed.The results reveal that the effect of fatigue properties can be obviously improved by optimized shot peening process.But the fatigue properties is not a simple monotonic variation with shot peening intensity.The surface integrity and fatigue resistance are the most optimum in a certain shot peening parameters,while they will be decreased by exorbitant shot peening intensity.Therefore,when choosing shot peening parameters,it is blinded to merely pursue exorbitant intensity and ignore the surface integrity of metal materials.关键词
TC21钛合金/喷丸/疲劳性能/表面完整性/疲劳抗力Key words
TC21 titanium alloy/shot peening/fatigue property/surface integrity/fatigue resistance分类
矿业与冶金引用本文复制引用
李世平,刘道新,李瑞鸿,夏明莉,张炜,乔明杰,杜东兴..喷丸强化与表面完整性对TC21钛合金疲劳性能的影响[J].机械科学与技术,2012,31(12):1921-1926,6.基金项目
国家自然科学基金项目（51171154）资助 （）
