Mg、Cu和Zn含量对液态模锻铝合金力学性能的影响
Effect of Content of Mg, Cu and Zn on Mechanical Properties of Al-alloy Under Liquid State Forging
李天生 , 徐 慧 , 张 洪
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作者单位：湖南工学院 机械工程系,湖南 衡阳 421008
中文关键字：液态模锻；铝合金；力学性能
英文关键字：liquid state forging; aluminum-alloy; mechanical properties
中文摘要：在实验室条件下，运用多因素正交试验调整合金元素Mg、Cu、Zn和Si的含量，随后在120 MPa压力下对该铝合金进行液态模锻成形。试样经力学性能测试,结果显示： Zn对合金抗拉强度影响最大，其含量(wZn)为5.5%时，合金抗拉强度的平均值达到182 MPa；对合金的伸长率和硬度影响最大的均为Mg，其含量(wMg)分别为1.0%和3.0%。
英文摘要：Under laboratory condition, by applying multifactor orthogonal test and changing concent of Mg, Cu, Zn and Si, liquid state forging was adopted to form the aluminum-alloy under 120 MPa pressure. The results of mechanical properties show that influence of Zn on tensile strength of the alloy was the biggest, the mean was 182 MPa when Zn content is 5.5wt%; the influence of Mg on elongation and hardness of the alloy was the biggest, Mg addition was 1.0wt% and 3.0wt%.