摘要
采用Gleeble-3800热模拟试验机对Nb-V复合非调质钢在变形温度950～1150℃、变形速率0．1～10s^-1、变形量为60％下进行单道次压缩试验，研究了Nb-V复合非调质钢的动态再结晶行为，并测得动态再结晶激活能为Qd=353．80kJ／mol。基于动态材料模型建立了其在常见变形量之下的热加工图。结果表明，该Nb-V钢在变形温度为1050～1150℃、应变速率为0．1～0．3s^-1的条件下功率耗散效率值最大，可为确定最佳的热加工工艺参数提供依据。
The compression single pass test of Nb-V composite nonquenched and tempered steel was carried at Gleeble-3800 thermal/mechanical simulation machine under the strain rate of 0.1 ～ 10 s^- 1 , the strain of 60% and the temperature of 950 ～1 150 ℃. The dynamic recrystallization behavior of Nb-V composite nonquenched and tempered steel was researched, and the measured dynamic reerystallization activation energy was Qd = 353.80 kJ/mol. Based on dynamic material modeling the hot processing map under the common deformation was established. The results showed that the highest efficiency of power dissipation was in the region of 1 050 ～1 150 ℃ and 0. 1～0.3 s^-1, which may provided the basis for determining the optimal parameters of the thermal processing technology.
出处
《上海金属》
CAS
北大核心
2014年第4期6-9,共4页
Shanghai Metals
关键词
非调质钢
Nb-V复合微合金化
热变形
动态再结晶
热加工图
Non-Quenched and Non Tempered Steel, Nb-V Microalloying, ThermalDeformation, Dynamic Recrystallization, Hot Processing Map
