奥氏体钢层错能与ε马氏体相变  

Stacking-Fault Energy and ε-Martensite Transformation of Austenitic Steels

作　　者：程晓农[1] 戴起勋[1] 王安东[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《钢铁研究学报》2003年第2期55-58,共4页Journal of Iron and Steel Research

基　　金：江苏省"青蓝"工程人才基金资助项目

摘　　要：导出了在奥氏体钢中相变驱动力与层错能的关系以及层错能和应变能对马氏体形态的影响规律。估算了低碳、氮含量的低温奥氏体钢中层错扩展时的晶格摩擦阻力(约为相变驱动力的18%)。临界层错能约为150mJ/m2。The direct relationship between stacking fault energy and phase transformation driving force of austenitic steels and the effect of stacking fault energy and strain energy on the morphology of martensite are deduced. The friction between the crystal lattices during propagation of stacking fault in austenitic steels containing low content of carbon and nitrogen is approximately 18 % of phase transformation driving force. And the critical value of stacking fault energy is about 150 mJ/m2 for the existence of stacking fault in austenitic steels.

关 键 词：奥氏体钢 层错能 ε相变 相变驱动力 马氏体相变 

分 类 号：TG142.2[一般工业技术—材料科学与工程]