Zn、Mg、Cu和Fe对Al-Ni共晶铸造合金组织与性能影响

陈大辉; 陈铮; 洪晓露; 朱鸿磊; 徐英; 刘永强; 张将; 彭银江

doi:10.15980/j.tzzz.2021.04.003

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Zn、Mg、Cu和Fe对Al-Ni共晶铸造合金组织与性能影响
Effects of Zn,Mg,Cu and Fe on Casting Aluminum Alloys in Al-Ni Eutectic System
2021年41卷第4期页码：406-410
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.04.003

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[1]陈大辉,陈铮,洪晓露,朱鸿磊,徐英,刘永强,张将,彭银江.Zn、Mg、Cu和Fe对Al-Ni共晶铸造合金组织与性能影响[J].特种铸造及有色合金,2021,41(04):406-410.

Chen Dahui, Chen Zheng, Hong Xiaolu, et al. Effects of Zn,Mg,Cu and Fe on Casting Aluminum Alloys in Al-Ni Eutectic System[J]. Special Casting & Nonferrous Alloys, 2021,41(4):406-410.
[1]陈大辉,陈铮,洪晓露,朱鸿磊,徐英,刘永强,张将,彭银江.Zn、Mg、Cu和Fe对Al-Ni共晶铸造合金组织与性能影响[J].特种铸造及有色合金,2021,41(04):406-410. DOI： 10.15980/j.tzzz.2021.04.003.

Chen Dahui, Chen Zheng, Hong Xiaolu, et al. Effects of Zn,Mg,Cu and Fe on Casting Aluminum Alloys in Al-Ni Eutectic System[J]. Special Casting & Nonferrous Alloys, 2021,41(4):406-410. DOI： 10.15980/j.tzzz.2021.04.003.

摘要

为开发以Al-Ni共晶体系为基础的铸造铝合金

采用砂型铸造、挤压铸造工艺

对比研究了Zn、Mg、Cu和Fe等元素对Al-Ni合金的微观组织、热分析曲线和力学性能的影响。研究发现

Zn、Mg加入到Al-Ni合金中形成了具有时效强化作用的Al

、MgZn

相

而不与Ni反应形成新的第二相;Cu、Fe分别与Ni反应形成了大量的Al

CuNi相、Al

FeNi相。Zn、Mg和Cu的加入减少了共晶相的数量

增大了凝固区间

使Al-Ni合金的铸造性能下降

而Fe的加入缩小了凝固区间

使Al-Ni合金的铸造性能提高。对比力学性能发现

Zn、Mg是Al-Ni合金中最有效的强化元素

优于Cu、Fe。

Abstract

In order to develop cast aluminum alloy material based on Al-Ni eutectic system

effects of Zn

Cu and Fe elements on microstructure

thermal analysis curves and mechanical properties of Al-Ni alloys were comparatively investigated by sand casting and squeeze casting.The results indicate that Al

and MgZn

phases with great aging strengthening effect are formed from Zn and Mg

without reacting with Ni to form any new second phases yet

while Cu and Fe can react with Ni to form a large number of Al

CuNi phase and Al

FeNi phases respectively.The amounts of eutectic phases are decreased due to the addition of Zn

and Cu

broadening the solidification interval and reducing the casting performances

while the addition of Fe has the contrary effect.Moreover

Zn and Mg are the most effective strengthening elements in Al-Ni alloys

which are superior to Cu and Fe from comparative analysis of mechanical properties.

关键词

Al-Ni共晶合金时效强化铸造性能

Keywords

Al-Ni Eutectic AlloyAging StrengtheningCasting Performances

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