摘要
利用光学显微镜与扫描电镜对失效的空压机活塞杆的组织与断口进行了分析。结合力学性能测试结果得出 ,活塞杆失效属于疲劳断裂。造成疲劳断裂的原因是活塞杆存在较多未溶铁素体及加工时刀痕过深形成较大的应力集中。
Microstructure and fracture surface of cracked piston rod of air compressor were analysed by optical microscopy and SEM combined with the testing results of mechanical properties.The results show that the failure of the piston rod is ascribed to fatigue fracture as a result of relatively much undissolved ferrite in piston rod and the stress concentration caused by overdeep machined scratching.
出处
《金属热处理》
CAS
CSCD
北大核心
2003年第1期69-71,共3页
Heat Treatment of Metals
关键词
断裂
空压机
活塞杆
失效分析
air compressor
piston rod
failure analysis
