空冷奥氏体相变过程中的相变潜热  

The Transition Latent Heat of Austenite Phase Transition in Air-cooled Conditions

作　　者：韩艳凯[1] 陈连生[1] 宋进英[1] 刘毅[2] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009 [2]河北钢铁集团唐山公司,河北唐山063000

出　　处：《河北理工大学学报（自然科学版）》2011年第3期46-49,共4页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：河北省自然基金项目资助:<空冷条件下金属相变潜热释放对组织转变的影响>;项目编号:E2009000791

摘　　要：在考虑相变潜热释放的基础上,对40Cr圆钢终轧后空冷条件下的温度场进行了模拟。同时,采用差示扫描量热法,对金属空冷过程中的相变过程的相变特征点及释放的相变潜热量进行了实验研究。利用实验和模拟结果,论证了瞬时冷却速率曲线法判定相变点的可靠性。Taking transition latent heat release＇s foundation into consideratton, the experiment carries out simulation on a the temperature field after 40Cr round steel finish rolling and under the air cooled condi- tion. At the same time, by using the differential scanning calorimetry, transition of the characteristic point and the releasing transition of the latent heat quantity are conducted in the experimental study in the process of metal transition under the air cooled condition. The experiment and the simulation result prove that the instant rate of cooling curve law determination phase tranformation point is reliabl~.

关 键 词：空冷 相变潜热 温度场模拟 差示扫描量热法 

分 类 号：TG151.3[金属学及工艺—热处理]