作　　者： ; ; ;

机构地区： 东北大学材料与冶金学院轧制技术及连轧自动化国家重点实验室

出　　处： 《东北大学学报（自然科学版）》 2006年第4期414-417,共4页

摘　　要： 对基本成分为Fe-0.1C-Mo的微合金HSLA钢进行了变化轧制与冷却参数的试验,分析了钢的组织形貌及微观结构;研究了变形和冷却参数与钢的屈强比、缺口冲击功、延伸率等的关系.结果表明:通过对轧制、冷却工艺的组合与变化,实现对钢的强度、塑性、屈强比的控制;抗拉强度800 MPa级的厚钢板,其屈强比控制在0.75以下,低温冲击韧性良好.钢的组织主要由针状铁素体和马氏体两相组成. Rolling and cooling experiments were carried out for the microalloyed HSLA steel of which the elementary composition is Fe-0. 1CMo, and its morphology and microstructures were analyzed, The effects of deformation and cooling parameters on the yield ratio, Charpy notch impact toughness and elongation of the steel were investigated. It was found that a precise control of its strength, ductility and yield ratio can be achieved through a properly changed combination of rolling and cooling parameters. The yield ratio of the developed grade 800 MPa tensile strength heavy steel plate is controlled below 0.75 with excellent low-temperature impact toughness provided, Mainly its metallographic structure consists of acicular ferrite and martensite.

关 键 词： 轧制 冷却 双相钢 组织 性能 厚板

领　　域： [金属学及工艺]