摘要
分析了X70管线钢的显微组织，主要以粒状贝氏体和贝氏体F为主，并有一定量的多边形铁素体和少量的珠光体，为典型的针状铁素体型管线钢组织，并具有良好的力学性能；MA岛及珠光体的数量会影响其强度及落锤试验等力学性能。
The microstructure of X70 pipeline steel is analysed, in which mainly includes granular bainite, bainitic ferrite and contains a certain number of polygonal ferrite and a small amount of pearlite. It is a typical microstructure of pipeline steel with acicular ferrite and has excellent mechanical properties. The number of MA islands and pearlite may influence the mechanical properties of its strength and DWTr.
出处
《南钢科技与管理》
2007年第4期7-9,共3页
NISCO Technology and Management
关键词
管线钢
显微组织
针状铁素体
力学性能
pipeline steel
microstructure
acicular ferrite
mechanical properties
