摘要
介绍了珠光体的传统的和新的定义。简述了淬火马氏体回火后的形态及其形成机制。淬火马氏体高温回火时发生分解,形成α相和渗碳体的复相组织,与正火或退火形成的珠光体(索氏体、托氏体)的形成机制不同。根据组织形态和形成机制,高温回火后的淬火马氏体应称之为高温回火马氏体而不是回火索氏体。
Traditional and up-to-date definitions of pearlite were introduced. Morphology and formation mechanism of martensite which produced during quenching and subsequently was tempered were briefly described. When high- temperature tempered, the quenched martensite will decompose into a dual-phase structure which consists of α-phase and cementite and differs from pearlite producing during the normalizing or annealing in the formation mechanism. In the light of morphology and formation mechanism, the martensite which produces during quenching and subsequently is high-tempered should be referred to as high-temperature tempered martensite, rather than the tempered sorbite.
出处
《热处理》
CAS
2012年第4期12-16,共5页
Heat Treatment
关键词
珠光体
马氏体
回火索氏体
高温回火马氏体
pearlite
martensite
tempered sorbite
high-temperature tempered martensite
