摘要
摩托车脚踏座在出厂检测时发生断裂。采用断口分析方法对摩托车脚踏座的断裂原因进行了分析。结果表明,零件是经铸造后挤压加工而成,内部残余缩孔的存在以及断口附近有魏氏组织和带状组织,是造成摩托车脚踏座断裂的主要原因,其为脆性解理断裂。
The breaking of foot-pedal in motorcycle was investigated by macroscopical and microscopical methods. The results showed that the existence of residual hole and the appearance of non-normal structure caused by manufacture process were the main cause. The brittle cleavage fracture of foot-pedal happened due to the stress concentration and the defect in the material.
出处
《理化检验（物理分册）》
CAS
2005年第3期144-146,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
加工工艺
残余缩孔
非正常组织
脆性解理断裂
失效分析
Process technique
Residual hole
Non-normal structure
Brittle cleavage fracture
Failure analysis
