The result indicates that there was a great deal of lath martensite in the quenched structure. 显微组织中存在大量板条马氏体，组织亚结构中存在大量位错和孪晶。
When austenitizing temperature is higher than a critical temperature,full lath martensite can be obtained in medium and high carbon steel. 钢的含碳量越高，获得全部板条马氏体的临界奥氏体温度越高。
