摘要
在Gleebe-1500热模拟机上对GH4049合金进行了热模拟压缩实验,采用动态材料模型建立了合金的热加工图。基于热加工图研究了GH4049合金在温度为1060～1180℃、应变速率为0.1～50 s-1条件下的热变形特性。结果表明,GH4049合金的热变形失稳区域集中在温度为1060～1110℃、应变速率为0.7～50 s-1及温度为1120～1180℃、应变速率为1.8～50 s-1的两个区域内;在合金的热变形稳定区域内,温度为1110～1175℃、应变速率为0.1～1.8 s-1是合金典型的动态再结晶区域,对应的峰值效率为32%。
The hot compression testing of GH4049 alloy was carried out by thermal mechanical simulator of Gleebe -1500 in the temperature of 1060 -1180℃ at strain rates of 0. 1 -50 s-1. A hot processing map was developed on the basis of these data by using the principles of dynamic materials modeling to study the hot char- acteristics of GH4049 alloy. The map exhibits two instability domains： one domain is at the temperatures of 1060- 1110℃ and strain rates of 0. 7 -50 s-1, the other one is at the temperatures of 1120 - 1180℃ and strain rates of 1.8 - 50 s-1. The stability region at the temperatures of 1110 - 1175% and strain rates of 0.1 1.8 s -1, with a peak efficiency of 32% , exhibits dynamic reclTstallization.
出处
《重型机械》
2012年第3期86-89,共4页
Heavy Machinery
关键词
GH4049合金
热加工图
能量耗散率
动态再结晶
GH4049 alloy
hot processing map
energy dissipation rate
dynamic reerystallization
