激光涂层零件的疲劳撞击可靠性寿命试验分析  

Reliability Life Test Analysis of Laser Coating Parts under Repeated Impact Loads

作　　者：傅戈雁[1] 石世宏[1] 钟鸣[1] 

机构地区：[1]苏州大学机电工程学院,苏州215021

出　　处：《中国机械工程》2004年第18期1687-1691,共5页China Mechanical Engineering

基　　金：湖南省自然科学基金资助项目 (0 2JJY2 0 72 )

摘　　要：制备了自熔合金粉末激光熔覆涂层试件 ,在多次撞击疲劳试验机上进行了可靠性试验 ,获得了相应的P -S -N曲线 ,考察了不同涂层材料对试件疲劳强度和可靠性寿命的影响。对多次撞击载荷下涂层零件的典型失效过程和涂层与基体的疲劳累积塑性变形进行了初步分析。The coating workpieces by laser cladding with the autolyze alloy powder were made and the reliability tests on the fatigue test machine were completed, which is applied to the repeated impacts. The relevant P-S-N curves are obtained and the effects of the different coating materials on the fatigue intension and reliability life are studied. With respect to the repeated impact loads, we have analyzed the typical failure process and the fatigue cumulating plastic deformation of the coat.

关 键 词：激光涂层 激光熔覆 零件 自熔合金粉末 塑性变形 基体 涂层材料 疲劳 劳累 撞击 

分 类 号：TH17[机械工程—机械制造及自动化] TG178[金属学及工艺—金属表面处理]