摘要
用透射电镜观察了 Fe- C- Cr- Mn亚稳奥氏体基铸铁在 80 0 #Si C砂纸上经往复摩擦磨损试验后磨损表层的微观结构 .结果表明 :摩擦表层奥氏体基体的微观组织结构不均匀 ,有位错区、层错区、滑移区和ε-马氏体区 ;此外 ,还观察到了大量的奥氏体变体 ,沿其 [1 31 ]晶带轴旋转 2 5.35°可与基体 [1 1 2 ]晶带轴重合 ;在碳化物颗粒附近只观察到奥氏体变体和层错 .
The microstructure of austenite in the worn surface layer of Fe C Cr Mn cast iron sliding against 800 # SiC sand paper was observed with a transmission electron microscope (TEM). As the results, the microstructure of austenite on the worn surface layer is unhomegeneous in which there are dislocation zones, stacking fault zones, slip zones, ε martensite zones and some austenite variants. Only strip austenite substructure and stacking fault were observed around the carbides.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第3期193-196,共4页
Tribology
关键词
亚稳奥氏体
微观结构
高铬铸铁
磨损表层
TEM
Fe C Cr Mn cast iron
metastable austenite
microstructure
austenite variant
