Hot Compressive Characteristics of 6061 Aluminum Alloy Based on Processing Map

Wang Xiaoxi; Zhang Xiang; Wang Huadong; He Min

doi:10.15980/j.tzzz.2017.09.005

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Hot Compressive Characteristics of 6061 Aluminum Alloy Based on Processing Map
Vol. 37, Issue 9, Pages: 944-948(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.09.005

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[1]王晓溪,张翔,王华东,何敏.基于热加工图的6061铝合金热压缩变形特性研究[J].特种铸造及有色合金,2017,37(09):944-948.

Wang Xiaoxi, Zhang Xiang, Wang Huadong, et al. Hot Compressive Characteristics of 6061 Aluminum Alloy Based on Processing Map. [J]. Special Casting & Nonferrous Alloys 37(9):944-948(2017)
[1]王晓溪,张翔,王华东,何敏.基于热加工图的6061铝合金热压缩变形特性研究[J].特种铸造及有色合金,2017,37(09):944-948. DOI： 10.15980/j.tzzz.2017.09.005.

Wang Xiaoxi, Zhang Xiang, Wang Huadong, et al. Hot Compressive Characteristics of 6061 Aluminum Alloy Based on Processing Map. [J]. Special Casting & Nonferrous Alloys 37(9):944-948(2017) DOI： 10.15980/j.tzzz.2017.09.005.

摘要

采用Gleeble-3500热模拟试验机对6061铝合金进行等温热压缩试验

研究变形温度为300

50℃、应变速率为0.01

0s-1、压缩量为60%条件下合金的热变形特性

分析其高温流变应力行为

依据动态材料模型建立热加工图并结合热变形组织分析6061铝合金的热变形机制。结果表明

6061铝合金流变应力随变形温度的升高和应变速率的降低而下降

其高温软化机制以动态回复为主;合金在高应变速率下普遍存在流变失稳

最佳热加工区间变形温度为430

50℃

应变速率为0.01

.05 s

-1

该工艺范围内合金出现了部分动态再结晶组织。

Abstract

Hot compressive characteristics of 6061 aluminum alloy were investigated on Gleeble-3500 thermal simulation machine by performing isothermal compression tests at 300

50 ℃ and 0.01

-1

with the maximum reduction of 60%.The flow stress behavior of 6061 aluminum alloy at high-temperature was analyzed and the hot processing map was established based on the dynamic material model（DMM）.Moreover

the hot deformation mechanism was described according to the associated microstructure observation.The results show that the flow stress is decreased by increasing in the deformation temperature and decreasing in the strain rate

and the main softening mechanism of 6061 aluminum alloy is characterized by dynamic recovery.The instability zones of flow behavior appear widely at higher strain rate on the processing map.The optimum process interval of 6061 aluminum alloy for hot working is the deformation temperature at 430

50℃and strain rate of 0.01

.05s

-1

in which some recrystallized grains canbe observed.