摘要
利用Gleeble 1500热／力学模拟实验机，对40CrNiMo钢进行双道次热模拟单向压缩试验。变形温度分别为710℃、760℃、950℃，变形速率为0．5～30s^-1，变形量为0．05～0．4，道次间停留时间为1～100s。分析了钢热变形组织特征，结果表明钢在950℃温度变形过程中发生奥氏体动态再结晶，在760℃温度变形过程中，应变奥氏体诱发铁素体析出，而在710℃温度变形过程中，应变奥氏体加速了铁素体析出。
In this paper, the Gleeble-1500 heat/mechanics moulding experimental was used to make doublepass hot compressive test for the 40CrNiMo steel, the grain character of 40CrNiMo steel＇s hot deformed austenite at the temperature rang of 710 ℃～950 ℃ ,in a strain rate rang of 0.5～30 s^-1 and a strain rang of 0.05～0.4 was analyzed. Results indicate that austenite dynamic recrystallization took place above the temperature of 950 ℃, strain induced ferrite transformation was investigated in the temperature of 760 ℃ and strain enhanced ferrite transformation was investigated in the temperature of 710 ℃.
出处
《上海应用技术学院学报（自然科学版）》
2006年第1期19-21,共3页
Journal of Shanghai Institute of Technology: Natural Science
关键词
40CRNIMO钢
应变强化相变
应变诱发相变
动态再结晶
40CrNiMo steel
strain enhanced transformation
strain induced transformation
dynamic recrystallization
