| 6111铝合金热变形行为及本构方程 |
| |
| 引用本文： | 傅垒,王宝雨,周靖,林建国.6111铝合金热变形行为及本构方程[J].塑性工程学报,2013,20(2):107-111. |
| |
| 作者姓名： | 傅垒 王宝雨 周靖 林建国 |
| |
| 作者单位： | 北京科技大学机械工程学院,北京,100083 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 利用Gleeble-1500热模拟机,研究6111铝合金在变形温度为350℃～550℃、应变速率为0.01s-1～10s-1的热变形流变应力行为。研究结果表明,6111铝合金为正应变速率敏感材料,且随着变形温度升高抗拉强度减小,其热变形经历了从应变硬化阶段过渡到稳态变形阶段的过程,软化机制主要为动态回复;采用Zener-Hollomon参数建立6111铝合金的本构方程,该方程可用于模拟6111铝合金材料一般加载情况下的热成形过程。
|
| 关 键 词： | 6111铝合金 热变形 本构方程 流变应力 |
Constitutive equation for hot deformation behavior of 6111 aluminum alloy |
| |
| FU Lei
,
WANG Bao-yu
,
ZHOU Jing
,
LIN Jian-guo.Constitutive equation for hot deformation behavior of 6111 aluminum alloy[J].Journal of Plasticity Engineering,2013,20(2):107-111. |
| |
| Authors: | FU Lei WANG Bao-yu ZHOU Jing LIN Jian-guo |
| |
| Abstract: | The flow stress behavior of 6111 aluminum alloy was studies on Gleeble-1500 thermal-mechanical simulator,over a range of temperature 350℃~550℃ and strain rate 0.01s-1~10s-1.The results demonstrated that 6111 aluminum alloy is a positive-strain-rate sensitive material.The tensile strength decreased as temperature became higher;the hot deformation behavior exhibited strain-hardening to a steady-state and the softening mechanism was mainly controlled by dynamic recovery.The constitutive equation of 6111 aluminum alloy was established using Zener-Hollomon parameter,which could be used in simulating the hot forming process under the prevailing loading conditions. |
| |
| Keywords: | 6111 aluminum alloy hot deformation constitutive equation flow stress |
| 本文献已被 万方数据 等数据库收录！ |
|
