无碳化物贝氏体组织与性能的研究  

Study on Structure and Performance of Bainite without Carbide

作　　者：张清辉[1] 杨军[1] 张涛[1] 

机构地区：[1]鞍钢集团技术中心

出　　处：《鞍钢技术》2003年第3期30-31,34,共3页Angang Technology

摘　　要：研究了无碳化物贝氏体的组织与机械性能。结果表明 ,在低碳贝氏体钢基础上 ,通过加入一定量的硅元素 ,利用其在贝氏体组织转变过程中抑制碳化物析出作用 ,得到由非等轴铁素体加马氏体和残余奥氏体 ( M-A)岛或由板条状铁素体及其板条间残余奥氏体 ( Ar)膜组成的无碳化物贝氏体组织 ,既具有高强度、高硬度 ,又具有较高的低温冲击韧性。The structure and mechanical performance of bainite without carbide are studied. The results show that through adding certain amount of Si element on the base of low carbon bainite steel, bainite structure without carbide is achieved by restraining carbide separation while Si changes in bainite. The structure consisting of non-equiaxed ferrite with martensite and residual austenite (M A) islands or lath ferrite and residual austenite(Ar) film among the lathes has not only high strength and high hardness, but also higher low-temperature impact toughness.

关 键 词：无碳化物贝氏体 组织 机械性能 低碳贝氏体钢 

分 类 号：TG142[一般工业技术—材料科学与工程]