Research of Multi-directional Forging for 7075 Aluminum Alloy

Ma Yong; Gui Wei; Wang Fangyin; Peng Cheng; Fang Bohan

doi:10.15980/j.tzzz.2015.05.006

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Research of Multi-directional Forging for 7075 Aluminum Alloy
Vol. 35, Issue 5, Pages: 466-470(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.006

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[1]马勇,桂伟,王芳银,彭程,方博涵.7075铝合金的多向锻造工艺研究[J].特种铸造及有色合金,2015,35(05):466-470.

Ma Yong, Gui Wei, Wang Fangyin, et al. Research of Multi-directional Forging for 7075 Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 35(5):466-470(2015)
[1]马勇,桂伟,王芳银,彭程,方博涵.7075铝合金的多向锻造工艺研究[J].特种铸造及有色合金,2015,35(05):466-470. DOI： 10.15980/j.tzzz.2015.05.006.

Ma Yong, Gui Wei, Wang Fangyin, et al. Research of Multi-directional Forging for 7075 Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 35(5):466-470(2015) DOI： 10.15980/j.tzzz.2015.05.006.

摘要

以7075高强铝合金为研究对象

在传统多向锻造工艺基础上

设计了一种有模具的多向锻造工艺。利用数值模拟方法

对比分析了两种工艺下金属流动性、成形载荷和等效应变分布

对变形后7075铝合金微观组织及均匀性进行了预测。结果表明

相对于传统多向锻造

基于模具的多向锻造工艺

经过多道次变形后

其坯料尺寸形状并不发生变化;在充型阶段金属流动速度大、分布趋于均匀

且在一定程度上提高了晶粒细化程度及坯料组织均匀性。带模具的多向锻造工艺在改善坯料质量、提高材料利用率等方面具有明显优势。

Abstract

The multi-directional forging with mould was designed based on the traditional multi-directional forging for wrought high-performance 7075 aluminum alloy.The metal flow

pressing load and the effective strain distribution were analyzed comparatively

and the microstructure and uniformity of 7075 aluminum alloy after deformation were predicted in two kinds of processes by simulation method.It is concluded that compared with the traditional multi-directional forging

the multi-directional forging with mould can take ignore change of the shape and size of the billet after several pass deformation

and also the velocity of the metal flow is increased and the distribution tends to be more uniform in filling stage.Meanwhile

it can take the grain refinement and microstructure uniformity to a certain extent.The new process has obvious advantages in improving the quality of billet and material utilization.