0Crl7Ni4Cu4Nb沉淀硬化不锈钢锻造裂纹分析  

Analysis of Forging Crack on 0Cr17Ni4Cu4Nb Precipitation Hardening Stainless Steel

作　　者：翟爱群[1] 杨钢[2] 蔡梅[3] 李昌永[3] 李许明[3] 马凤春[3] 

机构地区：[1]沈阳航空职业技术学院,沈阳110043 [2]钢铁研究总院结构材料研究所,北京100081 [3]沈阳黎明发动机制造公司,沈阳110043

出　　处：《特钢技术》2012年第2期5-9,共5页Special Steel Technology

摘　　要：实验室分析了0Cr17Ni4Cu4Nb不锈钢锻件的锻造裂纹产生原因,通过金相和扫描电镜观察,结果表明:Nb元素的偏析是引起锻造裂纹重要因素;Cu元素的偏析将在高温阶段析出大量的富铜相,导致高温塑性降低,也是导致锻造裂纹的原因之一。The cause for forging crack was studied experimentally on stainless steel 0Crl7Ni4Cu4Nb by means of optical micrograph and SEM analysis . The result shows that the segregation of niobium is the main cause for forging crack , and the segregation of copper would cause the precipitations of plentiful rich-Cu phases at high temperature , which result in the decrease of high temperature plasticity , and are one of the cause producing forging crack .

关 键 词：沉淀硬化不锈钢 锻造裂纹 偏析 

分 类 号：TG316.192[金属学及工艺—金属压力加工] TG142.71[一般工业技术—材料科学与工程]