摘要
利用Gleeble-3800热模拟试验机对30MnSi钢进行单道次压缩实验，研究和分析了变形温度、变形速率和变形量对热变形抗力的影响。结果表明，应变速率为0．1s-1时，材料在850～1100℃温度区间均发生动态再结晶。随着应变速率增加，动态再结晶所需温度逐步提高，应变速率增至10S-1，变形温度低于1150℃均未发生动态再结晶。在实测不同变形温度、变形速率和变形量与变形抗力关系的实验数据的基础上，采用Origin软件对实验数据进行回归分析，建立了30MnSi钢的变形抗力数学模型。
The compression test by applying Gleeble-3800 thermal simulator was carried out and the effects of deformation temperature, deformation rate and deformation amount on the hot deformation resistance of 30MnSi steel were studied. The results showed that dynamic recrystallization happened within 850 - 1 100 ℃ when the deformation rate was 0.1 s -l. The dynamic recrystallization temperature increased with the deformation rate increasing. There was no dynamic recrystallization when temperature was below 1 150 ℃ with the deformation rate of 10 s-1. The mathematical model of the hot deformation resistance for 30MnSi steel was established by regression analysis on the basis of compression test data.
出处
《上海金属》
CAS
北大核心
2014年第2期59-62,共4页
Shanghai Metals
关键词
30MnSi钢
热变形
变形抗力
数学模型
30MnSi Steel, Hot Deformation, Deformation Resistance, MathematicalModel
