Morphology, Nature and Formation Mechanism of Packet Plate Martensite in Medium and High Carbon Steels
The microstructures of 11 kinds of commercial steels quenched from high temperature were deeply studied by optical microscope and canning election microscope.It was proved that packet martensite in medium and high carbon steels is not lath martensite,but rather packet plate martensite.Through the analysis of crystallography,it was found that four change rules of crystal orientation may arise during the process of martensite transformation.Two inner interfaces spontaneously formed were only discovered in martensite transformation process:small-angel boundary (misorientation angle is 0 ~ 10°) and twin boundary (misorientation angle is 70°32).The former mainly appeared in low carbon martensite,and the latter principally formed in medium and high carbon martensite.The twin boundary packet mechanism in medium and high carbon steels has made in detail in this paper.
martensite packet martensite plate martensite phase transformation mechanism twin boundary packet mechanism
Yuexin Ma Yuejun Liu Long Wang Dechang Zeng Yuhua Tan
Zhongshan Torch Polytechnic, Zhongshan 528436, China Zhuzhou Institute of Technology, Zhuzhou 412008, China Materials Science and Engineering College, South China University of Technology, Guangzhou510000, Ch Xiangtan University, Xiangtan 411104, China
国际会议
台湾
英文
231-238
2011-12-11（万方平台首次上网日期，不代表论文的发表时间）