摘要
结合连续挤压工艺制定Gleeble-1500热压缩试验方案,测定H62黄铜合金流变应力,采用Arrhenius方程的指数形式描述H62黄铜的本构关系,绘制H62黄铜合金的热加工图,预测H62黄铜合金在连续挤压过程中的功率耗散因子η和组织的分布,以及塑性失稳区的位置,确定H62黄铜合金的最佳热变形参数为应变速率为001s-1,温度为400～500℃。
The flow stress of H62 brass during hot formation is investigated through experiments using Gleeble-1500 simulator machine based on the parameter of continuous extrusion process.The constitutive equation of H62 brass is described with Arrhenius model.Hot processing map is protracted,and the efficiency of power dissipation,the microstructure evolution and the plastic instability areas of H62 brass alloy during the continuous extrusion are predicted.As a result,the optimal parameters for H62 alloy the deforma...
出处
《有色金属》
CSCD
北大核心
2010年第2期7-10,共4页
Nonferrous Metals
基金
国家自然科学基金资助项目(50635020)
关键词
金属材料
黄铜合金
连续挤压
热加工图
本构关系
流变应力
metal material
brass alloy
continuous extrusion
processing map
constitutive equation
flow stress
