摘要
利用金相显微镜、扫描电镜、透射电镜和电子探针对模拟运行3×105 h后的10CrMo910钢管进行组织分析。结果表明,模拟运行3×105 h后贝氏体内长条状的M3C渗碳体分裂成短杆状,铁素体内析出粒状残留奥氏体,细针状Mo2C碳化物逐渐变成粒状;模拟运行3×105 h后,Cr、Mo向晶界扩散,贝氏体和块状铁素体内固溶的Cr、Mo向碳化物扩散,贝氏体和铁素体基体内的Cr和Mo下降。
Microstructure of 10CrMo910 steel tube after simulation running for 3×105 h was analyzed by metalloscope,SEM,TEM and electron probe.The results show that after simulation running for 3×105 h the strip-shaped M3C carbides have ruptured into bacilliform,and globular retained austenite are separated out from ferrite,also the fine acicular Mo2C carbide are coarsened gradually.On the other hand,after simulation running for 3×105 h,the elements Cr and Mo diffused into grain boundaries,and the Cr and Mo in bainite and massive ferrite diffused and formed into carbides which lead to decrease of Cr and Mo in bainite and ferrite.
出处
《金属热处理》
CAS
CSCD
北大核心
2012年第3期33-36,共4页
Heat Treatment of Metals
