钢中稀土对表面渗碳的促进作用  

Accelerating Effect of Rare Earths in Steel on Its Surface Carburiaing Process

作　　者：袁泽喜[1] 余宗森[2] 

机构地区：[1]武汉冶金科技大学材料学院,武汉430081 [2]北京科技大学材料物理系,北京100083

出　　处：《中国稀土学报》1999年第1期42-45,共4页Journal of the Chinese Society of Rare Earths

摘　　要：研究了不含稀土与含不同量稀土的20钢经过气体渗碳后的渗层厚度及试件从表层向内部的硬度变化。发现在相同的渗碳条件下，含稀土的20钢比不含稀土的20钢渗碳层厚度显著增加，并且随稀土含量由0－0．032％而不断增加。稀土含量再增加催渗效果不再增加。The carburizing process of steel 20 with and without RE addition was investigated. Theresults show that RE in steel can accelerate carburizing process at 850 and 910℃. The optimum RE content in steel is about 0.032%. The mechanism of enhancing effect of RE on carburizing process was discussed.

关 键 词：稀土 低碳钢 渗碳 钢 20钢 

分 类 号：TG162.8[金属学及工艺—热处理] TG156.81[金属学及工艺—金属学]