摘要
通过宏观分析、断口分析、化学成分检验、金相检验和力学性能检测等方法,对汽车发动机曲轴断裂原因进行了分析。结果表明:该曲轴硫化物夹杂偏多、组织偏析导致曲轴强度和硬度偏低,引起曲轴疲劳断裂。
The analysis of automobile engine crankshaft was conducted by macroscopic examination,fracture analysis,chemical composition analysis,metallographic examination and mechanical properties test.The results indicate that the low strength and hardness,resulting from the Sulfide inclusions and organizational segregation,led to the crankshaft fatigue fracture.
出处
《内燃机与动力装置》
2011年第2期50-52,共3页
Internal Combustion Engine & Powerplant
关键词
曲轴
淬火组织
疲劳断裂
疲劳强度
Crankshaft
Quenching Microstructure
Fatigue Fracture
Fatigue Strength
