热处理工艺对16MnR钢脆性转变温度的影响  

Effect of Heat Treatment Process on Ductile-brittle Transition Temperature of 16MnR Steel

作　　者：李红英[1] 丁常伟[1] 胡少旭[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《热加工工艺》2006年第20期55-57,共3页Hot Working Technology

摘　　要：对16MnR钢热轧板进行了不同的热处理。用系列冲击试验(能量)法,结合冲击断口形貌变化确定了脆性转变温度。光镜(OM)和扫描电镜(SEM)显微组织观察表明,脆性转变温度与热处理及其引起的组织变化密切相关;并且脆性转变温度按下列热处理态顺序降低:热轧态、正火、淬火后高温回火。The different heat treatment processes were done for the 16MnR steel. Based on fracture analysis of OM and SEM, the ductile-brittle transition temperature was defined by series of impact tests. The observation results indicate that the ductile-brittle transition temperature is closely correlative with the microstructure change caused by heat treatment. The ductile-brittle transition temperature is reduced from hot rolling status, normalizing status to the status of drawing temper after quenching.

关 键 词：脆性转变温度 16MNR钢 热处理 

分 类 号：TG142.14[一般工业技术—材料科学与工程]