纯钛高能喷丸表面纳米化后粗糙度的分析  

Analysis of Surface Roughness of Pure Titannium After Surface Nanocrystallization by High-energy Shot Peening

作　　者：杨磊[1] 赵秀娟[1] 陈春焕[1] 陈婷婷[1] 徐祥来[1] 任瑞铭[1] 

机构地区：[1]大连交通大学材料科学与工程学院,大连116028

出　　处：《中国表面工程》2006年第4期43-46,共4页China Surface Engineering

基　　金：国家自然科学基金资助项目(50171017)

摘　　要：通过高能喷丸方法(HSP)使工业纯钛获得约60μm的表面纳米层,并通过表面形貌仪对喷丸后表面粗糙度进行了测量,结果表明,纯钛表面HSP处理后,表面粗糙度增大,喷丸10min时粗糙度达到最大值,继续喷丸粗糙度降低,喷丸60min时粗糙度趋于稳定。喷丸时间60min时表面粗糙度对其疲劳性能的影响最小,表面纳米化效果最佳。Surface nanocrystallization of pure titannium was obtained by means of HSP, and then the variation of Ra was measured by the profilometer. The results showed that Ra increases after surface nanocrystallization, which can cause stress concentration and accelerate the initiation of cracks on the surface, therefore will decrease the fatigue intensity. The effect of shot peening for 60 minutes was best.

关 键 词：表面纳米化 工业纯钛 表面粗糙度 应力集中 

分 类 号：TB383[一般工业技术—材料科学与工程]