热处理对1.41%C超细晶超高碳钢马氏体亚结构的影响  

Effect of Heat Treatment on Martensite Sub-structure of 1.41%C Ultra-fine Grained Ultra-high Carbon Steel

作　　者：樊亚军[1] 曹海玲[1] 蔺卫平[1] 张占领[1] 朱杰武[1] 柳永宁[1] 许雁[2] 

机构地区：[1]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]西北第二民族学院材料科学与工程系,宁夏银川750021

出　　处：《热加工工艺》2007年第2期34-36,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50571077);陕西省科技攻关资助项目(2004KD7-G18)

摘　　要：1.41%C超高碳钢控轧后进行超细球化预处理,并在不同的温度下进行二次淬火。组织观察表明:热轧并球化预处理后超高碳钢获得了超细球化组织,经淬火后获得超细马氏体组织。随淬火温度升高,马氏体逐渐粗化,马氏体亚结构中位错对孪晶的比例先升后降,890℃时获得完全位错亚结构。并提出1.41%C超高碳钢获得大量板条马氏体的淬火温度为860～890℃。Ultra-fine spheroidizing pretreatment technology was applied to the 1.41%C hot-rolling ultra-high carbon steel. Then the second quenching was carried out at different temperature. Observation results show that the ultra-fine spheroidizing microstructure is obtained by spheroidizing pretreatment after hot-rolling treatment, and ultra-fine martensite is formed after quenching. Martensite is getting coarser and the proportion of dislocation to twin is＂ up first and down later with quenching temperature rising. Full dislocation sub-structure is obtained by quenching temperature of 890℃. At the same time, 1.41%C ultra-high carbon steel obtains a great deal of lath martensite at the quenching temperature range of 860-890℃.

关 键 词：超高碳钢 淬火温度 马氏体亚结构 位错 孪晶 

分 类 号：TG142.31[一般工业技术—材料科学与工程]