对P92钢C-曲线的评价  

Evaluation of C-curves for P92 steel

作　　者：段宝玉[1] 刘宗昌[1] 任慧平[1] 霍文霞[1] 

机构地区：[1]内蒙古科技大学分析测试中心,内蒙古包头014010

出　　处：《兵器材料科学与工程》2015年第5期93-96,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51101083);内蒙古自然科学基金(2013MS0813);内蒙古科技大学创新基金项目(2012NCL051)

摘　　要：研究P91、P92钢的过冷奥氏体转变具有重要理论意义和工程应用价值。汇总了P91、P92钢的CCT图和TTT图,对这些C-曲线进行分析和评价,指出存在的缺点,展示了P92钢的新的TTT图。P92钢的等温转变组织形貌较为特殊:珠光体组织为纤维状,下贝氏体呈颗粒状。The study of the undercooled austenite transformation of Pgl steel and P92 steel has important theoretical significance and engineering application value. The CCT diagrams and the TTT diagrams of the P91 steel and P92 steel were summarized, the C-curves were analysed and evaluated, the existing shortcomings were pointed out, and then the new TIT diagram for P92 steel was showed. The results show that the microstructure of P92 steel after isothermal treatment is special with fibrous pearlitic and granular lower bainite.

关 键 词：P91钢 P92钢 CCT图 TTT图 珠光体 贝氏体 

分 类 号：TG151.3[金属学及工艺—热处理]