微合金化和控轧控冷对中碳钢显微组织和力学性能的影响  

EFFECTS OF MICROALLOYING,CONTROLLED ROLLING AND CONTROLLED COOLING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF MEDIUM CARBON STEELS

作　　者：李文卿[1] 高宁[1] 王轶文[2] 

机构地区：[1]北京科技大学 [2]太原钢铁公司

出　　处：《钢铁》1990年第4期45-51,共7页Iron and Steel

摘　　要：本文测定微合金化中碳钢,经控轧控冷实验后的各项力学性能及先共析铁素体量(fa)、平均尺寸(d_a)、自由程(λ_α)和珠光体片层间距(S_0)。根据实验数据,以数理统计方法研究了中碳钢力学性能、组织参量、微合金化元素和控轧控冷工艺参数之间关系,得到了一些表述它们之间定量关系的估计式,并探讨控轧控冷微合金化中碳钢的强韧化机制。The experimental results of controlled rolling and controlled cooling of medium carbon ste-els are summarized in this paper.Various mechanical properties,the amount f_2, the mean inter-cept d_α and the free path λ_α of proeutectoid ferrite,and the interlamellar space of pearlite S_(?) we-re measured;the quantitative relations between the mechanical properties and microalloying,tec-hnical parameters of controlled rolling and controlled cooling,and also the quantitative relati-ons between the microstructure and these three factors were studied by statistical treatment,so-me quantitative expressions relating them were formulated.The strengthening and tougheningmechanisms of these microalloyed steels after controlled rolling and oontrolled cooling were alsoexplored.

关 键 词：微合金化 控轧 中碳钢 组织性能 

分 类 号：TG142.31[一般工业技术—材料科学与工程]