理化检验-物理分册2017，Vol.53Issue(2)：93-96,4.DOI:10.11973/lhjy-wl201702004
显色法检测表征304不锈钢的疲劳损伤过程
Color-change Method to Detect and Characterize the Fatigue Damage Process of 304 Stainless Steel
摘要
Abstract
Color-change method was used to detect and characterize the surface damage of 304 stainless steel in the process of fatigue.And combined with scanning electron microscopy (SEM) observation,the color-change characteristic during different fatigue damage stages,as well as the effect of surface roughness and stress amplitude on color-change test results was studied.The results show that with the increase of sample deformation,the colorchange experienced three stages,i.e.,the area of color-change was large and homogeneous,the area of color-change was partial,and the area of color-change was similar to the shape of surface cracks.These three stages were corresponding to the damage of the surface passivation film and initiation of micro cracks on the surface,the main crack initiation,and the long main crack propagation respectively.The higher sample surface roughness and the greater stress amplitude of the fatigue test were,the higher color-change values were.关键词
304不锈钢/显色法/疲劳损伤/表面粗糙度/应力幅Key words
304 stainless steel/color-change method/fatigue damage/surface roughness/stress amplitude分类
矿业与冶金引用本文复制引用
刘薪月,程从前,李会芳,许军,赵杰..显色法检测表征304不锈钢的疲劳损伤过程[J].理化检验-物理分册,2017,53(2):93-96,4.基金项目
国家自然科学基金资助项目(51571051,51101024,51101037,u1610256) （51571051,51101024,51101037,u1610256）
