P92耐热钢加热过程中奥氏体晶粒长大规律  

Grain growth rule of austenite grain in the heating process of P92 heat-resistant steel

作　　者：孙述利[1] 何文武[1] 张敏刚[1] 郭会光[1] 

机构地区：[1]太原科技大学材料科学与工程学院,太原030024

出　　处：《塑性工程学报》2013年第3期92-96,共5页Journal of Plasticity Engineering

基　　金：山西省攻关资助项目(20090322007);山西省研究生创新资助项目(20081083;20081084);太原科技大学博士启动基金资助项目(20122012;20122013)

摘　　要：对P92耐热钢在箱式电阻炉中进行晶粒长大实验,实验温度为1000℃、1050℃、1100℃、1200℃和1250℃,保温时间为1h、3h、5h、8h、10h和15h。采用ZEISS-AXIO显微镜观察奥氏体晶粒长大组织,用截线法进行奥氏体平均晶粒尺寸的测定。结果表明,P92耐热钢奥氏体晶粒随加热温度的升高和保温时间的延长而增大,并得到晶粒长大的数学模型。The P92 heat-resistant steel was heated in an box electric furnace at the temperatures of 1000℃, 1050℃, 1100℃, 1150℃, 1200℃, 1250℃ and holding time of lh, 3h, 5h, 8h, 10h, 15h, The average grain size of austenite was observed and measured by using the linear intercept method on ZEISAXIO metallographie microscope. The experimental results show that grain size of austenite in P92 heat-resistant steel increases with the increasing of heating temperature and holding time. A grain growth model of austenite was given.

关 键 词：P92耐热钢 加热温度 保温时间 晶粒长大 

分 类 号：TG146.2[一般工业技术—材料科学与工程]