0Cr17Ni4Cu4Nb钢锻件固溶时效处理后延迟断裂失效分析  

Failure Analysis on Delayed Fracture of 0Cr17Ni4Cu4Nb Steel's Forging after Solution & Aging Treatment

作　　者：夏书敏[1] 

机构地区：[1]江汉大学机电工程系,湖北武汉430019

出　　处：《热加工工艺》2000年第4期38-39,50,共3页Hot Working Technology

摘　　要：通过对 0 Cr17Ni4Cu4Nb钢锻件固溶时效处理后延迟断裂失效分析 ,结果表明 ,固溶处理过程中锻件心部未冷至 Ms温度以下及锻件表层的折叠及混晶等缺陷是导致锻件开裂的主要原因。工艺改进后 。It has been analyzed the cause of delayed fracture of 0Cr17Ni4Cu4Nb steel's forging after solution and aging treatment. The analytic results showed: It was main reasons of forging delayed fracture that the inside of forging was not cooled below Ms in solution and there were some forged defects on the surface of forging. Forging hasn't broken since technological processes were improved.

关 键 词：固溶时效处理 延迟断裂 锻钢件 失效分析 

分 类 号：TG161.9[金属学及工艺—热处理]