摘要
采用流变铸造生产了AlSi7Mg铝合金的压铸件,对不同浆料温度的压铸件的微观组织进行了观察,并测试了不同参数生产出的压铸件的力学性能。结果表明,不同浆料温度下汽车用流变压铸AlSi7Mg合金的冷却速度随浆料温度的升高而逐渐增大;合金的晶粒平均尺寸随浆料温度的降低而逐渐变大;合金的抗拉强度随浆料温度的升高先升高后降低;合金的断后伸长率随着浆料温度的降低而增加。在浆料温度600℃时,汽车用流变压铸AlSi7Mg合金的力学性能最佳。
Die castings of AlSi7Mg aluminum alloys were produced by rheological casting.The microstructure of the die castings with different slurry temperatures was observed,and the mechanical properties of the die castings produced with different parameters were tested.The results show that the cooling rate of automotive rheological die-casting AlSi7Mg alloy increases gradually with the increase of slurry temperature under different slurry temperatures;the average grain size of the alloy increases with the decrease of slurry temperature.The tensile strength of the alloy increases firstly and then decreases with the increase of slurry temperature.The elongation after fracture of the alloy increases with the decrease of the slurry temperature.When the slurry temperature is 600℃,the mechanical properties of the rheological die-cast AlSi7Mg alloy for automobiles are best.
作者
刘晓超
罗晨旭
LIU Xiaochao;LUO Chenxu(Department of Mechanical Engineering,Henan College of Industry&Information Technology,Jiaozuo 454000,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《热加工工艺》
北大核心
2023年第23期105-108,共4页
Hot Working Technology
基金
河南省科技厅2021年度河南省重点研发与推广专项项目(软科学研究)项目课题(212400410376)。
关键词
流变铸造
压铸
AlSi7Mg铝合金
浆料温度
rheological casting
die casting
AlSi7Mg aluminum alloy
slurry temperature
