Cr12MoV模具断裂原因分析
Crack Failure Analysis of Cr12MoV Die
侯彩云, 宗 铎, 王志忠, 孙 鹏
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作者单位:(中国兵器科学研究院 宁波分院, 浙江 宁波 315103)
中文关键字:Cr12MoV; 共晶碳化物; 块状碳化物; 断裂
英文关键字:Cr12MoV; eutectic carbide; block carbide; crack
中文摘要:采用化学成分分析、硬度测定、金相检验及综合分析等方法对Cr12MoV模具的断裂原因进行分析。结果表明:材料中共晶碳化物呈网状分布,同时存在锋利、尖角块状碳化物,二者共同作用导致模具断裂。
英文摘要:The failure cause of Cr12MoV die was analyzed by chemical composition analysis, hardness measurement, metallography inspection and analysis. The results show that the eutectic carbides distribute in net-shaped structure and there are some sharp-edged block carbides existing in steel meanwhile. These carbides together lead to the crack of Cr12MoV die.