奥氏体相变与M2高速钢超塑性的关系  

RELATIONS BETWEEN AUSTENITIC TRANSFORMATION AND SUPERPLASTICITY IN M2 HIGH SPEED STEEL

作　　者：崔忠圻[1] 梁彤翔[1] 刘博[1] 陈浦泉[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《钢铁》1993年第7期45-50,共6页Iron and Steel

摘　　要：经热轧后调质处理的M2高速钢进行超塑拉伸,温度为800℃时,延伸率突然增大。研究结果表明,延伸率的增大是由于奥氏体相变的作用。文中提出塑变与相变之间相互作用的机制,利用显微硬度法分析了变形中产生的相变,并观察超塑性变形中孔洞的形貌。M2 high speed steel after rolling, quenching-tempering treatments exhibits abrupt super-plasticity under the condition of tensile deformation (T=800℃, ε=8.33×10^(-4)s^(-1)). The high plasticity is due to the transformation of austenite. An explanation is put fotward to the relations between plasticity and phase transformation. The microstructure is observed and the phase transformation during superplastic deformation is analyzed vickers diamond hardness method.

关 键 词：奥氏体 高速钢 超塑性变形 相变 延伸率 调质处理 显微硬度 分析 研究结果 观察 

分 类 号：TF763[冶金工程—钢铁冶金] TG146[一般工业技术—材料科学与工程]