Co对高Ni-Co二次硬化钢微结构影响的穆斯堡尔谱研究  

Influence of Co on Microstructure of High Ni-Co Secondary Hardening Steel by Mossbauer Spectroscopy Study

作　　者：张国英[1] 苏杰[2] 钱存富[1] 李荣[2] 曾梅光[1] 

机构地区：[1]东北大学理学院 [2]钢铁研究总院结构材料研究所,北京100081

出　　处：《钢铁研究学报》2001年第6期35-39,共5页Journal of Iron and Steel Research

基　　金：国家九五科技攻关资助项目 ( 98-A2 8-0 1-0 2 )

摘　　要：用穆斯堡尔谱研究了钴含量对高 Ni- Co二次硬化钢微结构的影响。发现 :随着钢中钴含量的减少 ,马氏体中的钴作为铁原子近邻的原子组态总量减少 ;钴在马氏体中的分布会影响镍、铬、钼原子在马氏体中的分布 ;钴促进奥氏体向马氏体转变 ,减少残余奥氏体量 ;钴促进合金碳化物的形成 。The influence of Co on the microstructure of high Ni Co secondary hardening steel was studied by Mossbauer spectroscopy. The results showed that the configuration of Fe C 2Co, Fe 2Co in martensite is reduced with decreasing of Co content in steel; the distribution of alloying elements Ni, Cr, Mo is influenced by Co content in martensite; Co promotes the transformation of austenite to martensite during quenching, the amount of austenite is decreased with increasing of Co content in steel; Co promotes the formation of carbide during tempering, the quantity carbide increases with increasing of Co content in steel.

关 键 词：穆斯堡尔谱 超精细场 合金元素分布 二次硬化钢 钴 微结构 

分 类 号：TG142.1[一般工业技术—材料科学与工程]