铸态M2高速钢的热变形行为  

Hot deformation behavior of as-cast AISI M2 high-speed steel

作　　者：孙淑华[1,2] 曲明贵[1] 白兴红 王博[1] 高扬[1] 傅万堂[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]燕山大学理学院,河北秦皇岛066004 [3]中国第一重型机械集团股份公司,黑龙江齐齐哈尔161042

出　　处：《材料热处理学报》2013年第5期47-50,共4页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51101137;51171161);国家核电重大专项课题(2011ZX06004-016);河北省杰出青年科学基金(E2011203131)

摘　　要：用Gleeble-3500热力模拟试验机对铸态M2高速钢进行1000～1150℃及0.01～1.0 s-1的热压缩变形,获得了铸态M2高速钢的流变曲线,分析了变形后的显微组织特性。结果表明,铸态M2高速钢的流变应力和峰值应变均随变形温度的降低和应变速率的提高而增大,其热变形激活能为550.16 kJ/mol,同时得到了其热变形方程,建议其在1050～1150℃和0.01～1.0 s-1的工艺条件下进行热加工。The hot compression deformation behavior of as-cast AISI M2 high-speed steel was investigated on a Gleeble-3500 simulator at 1000-1150 ℃ and strain rate of 0. 01-1.0 s^-1. The corresponding flow curves were obtained and hot deformation microstructure was observed. The results show that the flow stress and peak strain increase with increasing strain rate and decreasing deformation temperature. The hot deformation activation energy Q of the steel is about 550.16 kJ/mol, and then the hot deformation equation is obtained. The suggested processing condition is at 1050-1150 ℃ and strain rate range of 0. 01-1.0 s -~

关 键 词：铸态M2高速钢 流变曲线 热变形方程 热加工图 

分 类 号：TG142.45[一般工业技术—材料科学与工程]