锻压技术

HPb59-1黄铜热压缩变形流动应力方程的构建及应用

英文标题：Constitutive equation of HPb59-1 brass during hot compression and its application

作者：肖艳红郭成

单位：西安交通大学

分类号：TG376.2

出版年,卷(期):页码：2012,37(3):127-132

摘要：

通过热压缩实验对HPb59-1黄铜在温度为650～800℃和应变速率为0.1～10s-1下的高温变形行为进行了研究，其真应力真应变曲线表明：流动应力随着应变速率的降低和温度的升高而降低。通过回归拟合实验数据建立了HPb59-1黄铜高温变形流动应力方程，并进行验证。将建立的流动应力方程嵌入Deform\|3D，并对某方法兰件的热挤压成形过程进行数值模拟，研究了该零件热挤压成形规律。最后通过工程实践验证了本研究的有效性，为工程应用提供一定的参考。

The high-temperature deformation behavior of HPb59-1 brass was investigated by isothermal compression tests in the temperature range of 650800 ℃ and the strain rate range of 0.1-10s-1. The true stess-true strain curves show that the stress level decreases with increasing of temperature and decreasing of strain rate. The constitutive equation of HPb59-1 brass was proposed by means of fitting the experimental data and verified. Then, the hot extrusion process of a part with square flange was analyzed using Deform-3D and the forming laws were obtained. Finally, the validity of this research results were proved by practice, which provided some references for engineering application.

基金项目：

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