Transformation Behavior and Microstructure in a 40Cr2Ni2MoV Cast Steel
作者单位：Mechanical Automotive ＆ Material Engineering University of Windsor Windsor Ontario Cannda
会议名称：《14～(th) Congress of International Federation for Heat Treament and Surface Engineering》
会议日期：2004年
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：alloy cast steel TTT diagram segregation microstructure
摘 要：正 The transformation behavior of a 40Cr2Ni2MoV cast steel manufactured by electroslag remelting （ESR） has been investigated. Compared to a forged steel, the incubation periods for both the pearlite and bainite transformations are shorter, but the transformation times are longer. The austenite is easier to transform into martensite. Optical microscopy and TEM indicated that there were variations in microstructure during the super-cooled austenite transformation. This is attributed to an inhomogeneous austenite, resulting from the segregation of elements during the ESR solidification.