变形条件对喷射成形Al-9Mg-0.5Mn合金动态再结晶的影响

范才河; 陈喜红; 戴南山; 周伟; 阳建君; 彭英彪

doi:10.15980/j.tzzz.2016.01.022

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变形条件对喷射成形Al-9Mg-0.5Mn合金动态再结晶的影响
Dynamic Recrystallization Behavior of Spray-formed Al-9Mg-0.5Mn Alloy during Hot Compression Deformation Process
2016年36卷第1期页码：80-83
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.01.022

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[1]范才河,陈喜红,戴南山,周伟,阳建君,彭英彪.变形条件对喷射成形Al-9Mg-0.5Mn合金动态再结晶的影响[J].特种铸造及有色合金,2016,36(01):80-83.

Fan Caihe, Chen Xihong, Dai Nanshan, et al. Dynamic Recrystallization Behavior of Spray-formed Al-9Mg-0.5Mn Alloy during Hot Compression Deformation Process[J]. Special Casting & Nonferrous Alloys, 2016,36(1):80-83.
[1]范才河,陈喜红,戴南山,周伟,阳建君,彭英彪.变形条件对喷射成形Al-9Mg-0.5Mn合金动态再结晶的影响[J].特种铸造及有色合金,2016,36(01):80-83. DOI： 10.15980/j.tzzz.2016.01.022.

Fan Caihe, Chen Xihong, Dai Nanshan, et al. Dynamic Recrystallization Behavior of Spray-formed Al-9Mg-0.5Mn Alloy during Hot Compression Deformation Process[J]. Special Casting & Nonferrous Alloys, 2016,36(1):80-83. DOI： 10.15980/j.tzzz.2016.01.022.

摘要

采用Gleeble-3500热模拟试验机对喷射成形Al-9Mg-0.5Mn合金进行等温热压缩试验

研究了变形温度、应变和应变速率对合金动态再结晶行为的影响。结果表明

合金在热压缩变形初期

加工硬化起主导作用

流变应力随变形程度的增加迅速增大;但随着应变增加

动态再结晶是主要的软化机制;变形温度越高

合金变形更均匀

合金的储存能更高

动态再结晶的形核和长大过程更快;应变速率越小

再结晶核心及亚结构有充分的时间形成和长大

合金发生完全动态再结晶

合金的组织为再结晶组织。

Abstract

The hot compression tests of spray-formed Al-9Mg-0.5Mn alloy was performed using thermal simulation tests in a Gleeble-3500 simulator.The effects of deformation temperature

strain and strain rate on dynamic recrystallization in spray-formed Al-9Mg-0.5Mn alloy were investigated.The results show that the working hardening plays a dominant role in the initial stage of deformation

and the flow stress is increased with increasing in strain.With increasing in strain

the main soft mechanism is characterized by dynamic recrystallization.The storage energy is increased with increasing in deformation temperature as a result of accelerating nucleation and growth of dynamic recrystallization.At a lower strain rate

there is enough time to grow for dynamic recrystallization core and substructure

which promotes dynamic recrystallization.So the microstructure of the alloy is completely recrystallized structure.

关键词

喷射成形Al-9Mg-0.5Mn合金热压缩变形动态再结晶

Keywords

Spray FormingAl-9Mg-0.5Mn AlloyHot Compressing DeformationDynamic Recrystallization

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