高强度螺栓断裂分析  

FRACTURE ANALYSIS OF HIGH STRENGTH BOLT

作　　者：高尚[1] 徐勇[1] 孙国雄[1] 张静江[1] 

机构地区：[1]上海机动车检测中心,上海201805

出　　处：《理化检验（物理分册）》2006年第6期306-308,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：规格为M10×1.25mm×(45-8．8)mm高强度螺栓装配时发生断裂。采用宏观形貌观察、化学成分分析、显微组织检验和力学性能测试等手段,对螺栓断裂原因进行了分析。结果表明,由于热处理工艺控制不当,出现非正常组织,导致产品硬度与强度下降。The bolt of M10×1.25mm （45-8. 8）mm are fractured when they were assembled. The analysis of these bolts were made by means of macro-morphology inspection, chemical composition analysis, micro-structure examination, mechanical property testing It is shown that the microstructure of the bolts were abnormal resulted from improper heat treament which led to the descent of hardness and strength of these bolts.

关 键 词：螺栓 断裂 热处理 

分 类 号：TG142.41[一般工业技术—材料科学与工程]