关键词:钢铁;高铬钢辊;球化退火;微观结构
摘 要:This paper investigates the annealed microstructure of a new high chrome steel for roiler,using methods of SEM、DES、XRD and hardness tests.The results show that the spheroidizing annealed high chromium steel is constitutive of ferrite and globular cementite,and the microstructure is relatively reasonable.But there are disadvantage characters such as small holes in the vicinity of the grain boundary,and residual lamellar pearlite exists in local area.In this paper,generation mechanisms of these characters are explained,and prevention methods are given for the weakness of the high chorme steel for roller.