X100管线钢中奥氏体晶粒长大规律研究  

Study on Austenite Grain Growth Behavior of X100 Pipeline Steel

作　　者：祝成波[1] 申邦坡[2] 

机构地区：[1]江西理工大学应用科学学院,江西赣州341000 [2]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《热加工工艺》2013年第12期70-72,共3页Hot Working Technology

摘　　要：通过改变均热温度(900～1200℃)和保温时间(0～4h),研究X100管线钢奥氏体晶粒长大规律。结果表明:奥氏体晶粒尺寸随加温温度升高和保温时间延长呈指数增加;保温温度在1050℃以上时出现奥氏体晶粒快速长大。通过对试验数据进行非线性回归建立了实验钢奥氏体晶粒长大规律的数学模型,拟合度较好。By changing heating temperature （900-1200℃） and holding time （0-4 h）, the effects of heating temperature and holding time on the austenite grain growth behavior were stuided, and the distribution of austenite grain size was analyzed. The results show that the austenite grain size increases with heating temperature and holding time increasing. The austenite grain grows rapidly when the heating temperature is higher than 1050℃. The grain growth models for the testing steel during heating process were established based on non-linear regression.

关 键 词：均热温度 保温时间 晶粒尺寸 晶粒长大 

分 类 号：TG142[一般工业技术—材料科学与工程]