摘要
以Mo、Cr、Mn等为合金元素,设计了建筑用新型耐火钢成分,并按照实际生产工艺对其进行了熔炼。研究了回火处理工艺对建筑用耐火钢样品的室温和高温力学性能的影响以及微观组织。结果表明:耐火钢组织主要以铁素体和粒状贝氏体为主,还有少量的珠光体。回火过程发生非等轴铁素体的位错强化和M/A(马氏体/奥氏体)相的相变强化,二者共同作用提高了耐火钢的力学性能。
Taking Mo, Cr and Mn as alloying elements, a new type of refractory steel was designed, and it was melted according to the actual production process. Effects of tempering process on the mechanical properties of the steel samples for construction at the room temperature and high temperature were studied, and the microstructure was studied. The results show that microstructure of refractory steel is mainly ferrite and granular bainite, and a small amount of pearlite. In the tempering process, the non-equiaxed ferrite dislocation strengthening and M/A （Martensite/Austenite） phase transformation strengthening occur, and the mechanical properties of the refractory steel are improved by the two co-action.
出处
《热加工工艺》
CSCD
北大核心
2016年第24期215-218,共4页
Hot Working Technology
基金
教育部人文社科青年基金项目(13YJCZH218)
陕西省社科联项目(2015Z026)
陕西理工学院校级科研项目(SLGKJ14-04)
关键词
建筑
耐火钢
回火热处理
力学性能
显微结构
building
fire-resistant steel
tempering heat treatment
mechanical properties
microstructure
