稀土对35CrMo钢淬火组织结构的影响  

EFFECT OF RE ON QUENCH MICROSTRUCTURE OF 35CrMo STEEL

作　　者：王贵[1] 周新初[1] 李殿凯[2] 赵金茹[2] 

机构地区：[1]包头钢铁学院 [2]中国兵器工业第五二研究所

出　　处：《兵器材料科学与工程》2001年第1期19-22,共4页Ordnance Material Science and Engineering

摘　　要：利用透射电子显微镜详细观察了在 35 Cr Mo钢加入不同含量稀土后对淬火组织马氏体亚结构的影响。结果表明 ,加入稀土后使马氏体板条细化 ,阻碍了孪晶马氏体的形成 ,孪晶马氏体量减少 ,特别是稀土加入量为 0 .1%时 ,钢中马氏体板条细化明显。稀土提高了铸态过冷奥氏体在贝氏体区的稳定性 ,但对贝氏体组织形态变化影响不明显。The effect of the RE additions with different contents on the martensite substructure of the quench microstucture of 35CrMo steel was examined by means of TEM.The reaults show that the martensite lathes were refined after the RE additions being introduced,which impeded the formation of the twinning martensite,especially the martensite lathes refined remarkably when the content of the RE addition is 0.1%.the RE elements improved the stability of ascast supereoding austenite in the bainitic zone,but they affect only a little the shape of the bainitic microstructure.

关 键 词：马氏体亚结构 孪晶马氏体 稀土 35CRMO钢 淬火 组织结构 

分 类 号：TG156.3[金属学及工艺—热处理] TG113.12[金属学及工艺—金属学]