Cr12MoV钢制刀具断裂失效分析  

Fracture Failure Analysis of Cr12MoV Steel Cutters

作　　者：牟风 康爱军[1] 马野[1] 燕云[1] 刘宝石[1] Mou Feng;Kang Aijun;Ma Ye;Yan Yun;Liu Baoshi

机构地区：[1]抚顺特殊钢股份有限公司技术中心,辽宁抚顺113001

出　　处：《模具制造》2020年第11期86-87,92,共3页Die & Mould Manufacture

摘　　要：针对Cr12MoV钢制刀具使用时发生断裂失效进行了详细分析3通过宏观和微观分析,证实刀具的断裂属脆性断裂。刀具设计时原材加工余量少,成品刀具表面存在残余黑皮,加工时产生应力集中是导致刀具断裂的主要原因。原材中的半网状共晶碳化物和热处理工艺不当是造成刀具断裂的次要原因。The fracture failure of Cr12MoV steel cutters is analyzed in this paper.Through macroscopic analysis,it is proved that the facture of the cutter belongs to brittle facture.The main reason of cutting tool facture is that the raw material machining allowance is small and the finished tool surface has residual black skin.The secondary reasons for the fracture ol the cutting tool are the semi-mesh eutectic carbide and improper heat treatment process in the raw materizl.

关 键 词：CR12MOV 失效分析 共晶碳化物 断口 

分 类 号：TG162[金属学及工艺—热处理] TG142[金属学及工艺—金属学]