H13钢超塑成形性能研究  

Research on Superplasticity of H13 Steel

作　　者：翟福宝[1] 张质良[1] 夏萼辉[1] 张耀宗[2] 刘立兵[2] 

机构地区：[1]上海交通大学,上海200030 [2]洛阳工学院,洛阳471034

出　　处：《机械科学与技术》2001年第1期98-99,共2页Mechanical Science and Technology for Aerospace Engineering

摘　　要：对 H13钢的超塑性能进行了试验研究 ,得出了变形温度和应变速率对 H13钢超塑性能的影响规律。结果表明 :H13钢经 10 0 0℃三次循环淬火后 ,晶粒度可达 13级 ;在温度为 840℃ ,应变速率为 1.6× 10 - 4 s- 1的条件下拉伸 ,其最大延伸率为 185 % ,流变应力为 31MPa,m值为 0 .2 6。本研究为 H13钢的超塑性成形工艺提供了最佳工艺参数。In this paper, the superplasticity of H13 steel is studied. The effective rules of deformation temperature and strain rate on the superplasticity of H13 steel are deduced from the experimental results. The results show that, after 3 times of repeated quenching, H13 steel can get a grain size number of 13; Under the temperature of 840℃ and strain rate of 1.6×10 -4/s, H13 steel can gain a maximum elongation of 185%, flow stress of 31MPa and strain-rate sensitivity coefficient of 0.26, which provides optimum parameters for the superplastic forming process.

关 键 词：H13钢 超塑性 等速度拉伸试验 模具钢 

分 类 号：TG142.45[一般工业技术—材料科学与工程]