加热速度和冷却方式对508-3钢奥氏体晶粒尺寸的影响  

Effect of Heating Rate and Cooling Mode on Austenite Grain Size of 508-3 Steel

作　　者：何西扣[1] 白天[1] 刘正东[1] 林肇杰[1] 

机构地区：[1]钢铁研究总院特殊钢研究所,北京100081

出　　处：《热加工工艺》2013年第20期204-205,209,共3页Hot Working Technology

基　　金：国家科技重大专项基金资助项目(2010ZX06004-016)

摘　　要：研究了不同加热速度以及不同冷却方式对508-3钢奥氏体晶粒尺寸的影响。结果表明:508-3钢在奥氏体化过程中,随加热速度的提高,钢的奥氏体晶粒得到了一定程度的细化;不同冷却方式得到的原始组织再次奥氏体化后,炉冷得到的铁素体+珠光体组织相比水冷得到马氏体组织所获得奥氏体晶粒更为细小。The effects of different heating rate and different cooling mode on the austenite grain size of 508-3 steel were investigated. The results show that finer grain size can be obtained by improving heating rate in the austenitizing process of 508-3 steel, and ferrite/pearlite primary microstructure obtained by furnace cooling can refine austenite grain size of 508-3 steel to some extent, compared with martensite primary microstructure obtained by water cooling.

关 键 词：加热速度 冷却方式 奥氏体晶粒尺寸 508-3钢 

分 类 号：TG156.5[金属学及工艺—热处理]