齿轮钢20CrMnTi在1000℃时的变形抗力数学模型  

Deformation Resistance Model for Gear Steel 20CrMnTi at 1000 ℃

作　　者：马璟[1] 陈拂晓[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《热加工工艺》2012年第4期49-50,共2页Hot Working Technology

摘　　要：1000℃时在Gleeble-1500热模拟试验机上对20CrMnTi进行热压缩试验,得到了其应力-应变曲线,采用Matlab软件对试验数据进行拟合,得到了变形速率在0.01、5 s-1时的变形抗力模型。结果表明,利用该模型得到的计算值与试验值非常接近,这为20CrMnTi热成形时工艺参数的制定提供了参考。The stress-strain curve of 20CrMnTi at 1000 ℃ was obtained by compression test on hot simulation test machine Gleeble-1500.The deformation resistance model at the deformation rate of 0.01 s-1 and 5 s-1 was built by fitting the data from the stress-strain curve.The results show that the calculated value from the model is very closed to the test value.The model can provide reliable references for the process parameters of hot plastic forming of 20CrMnTi steel.

关 键 词：20CrMnTi 压缩试验 变形抗力模型 

分 类 号：TG142[一般工业技术—材料科学与工程]