S136钢塑料模具开裂失效的电子探针分析  

Fracture failure analysis of S136 steel plastic mold by EPMA

作　　者：雷淑梅[1] 肖艳艳[2] 匡同春[1] 陈丽凤[1] 尹诗衡[1] 张美英[1] 

机构地区：[1]华南理工大学分析测试中心,广东广州510640 [2]广东白云学院机电工程系,广东广州510450

出　　处：《电子显微学报》2010年第6期535-539,共5页Journal of Chinese Electron Microscopy Society

摘　　要：S136钢塑料模具使用过程中出现了早期开裂现象。本文主要采用电子探针和金相显微镜对失效模具的化学成分、断口形貌、显微组织进行观察和分析。结果表明:失效的S136钢塑料模具冶金夹杂物多,材质低劣;裂纹起始端的严重过热,网状碳化物的形成导致材料脆性增加,强度下降,两者共同作用导致模具开裂失效。The early failure cracks in S136 steel plastic mold were found.Electron probe microanalysis（EPMA） and metallurgical microscope were employed to investigate the chemical composition,fracture surface morphology and microstructure respectively.The results showed that the inferior quality materials with much inclusion and overheating reticulation carbide were the main responsible reasons for the fracture of the plastic mold.

关 键 词：S136钢 电子探针 过热 夹杂物 开裂 

分 类 号：TG142[一般工业技术—材料科学与工程] TG115[金属学及工艺—金属材料]