超声波和热平衡复合作用对铝合金压铸件优化的效果

李超; 杨湘杰; 郭洪民; 王家宣; 李振兴

doi:10.15980/j.tzzz.2018.11.002

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超声波和热平衡复合作用对铝合金压铸件优化的效果
Compound Optimization Effects of Aluminum Alloy Die Castings Based on Ultrasound and Thermal Equilibrium
2018年38卷第11期页码：1166-1170
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.11.002

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[1]李超,杨湘杰,郭洪民,王家宣,李振兴.超声波和热平衡复合作用对铝合金压铸件优化的效果[J].特种铸造及有色合金,2018,38(11):1166-1170.

Li Chao, Yang Xiangjie, Guo Hongmin, et al. Compound Optimization Effects of Aluminum Alloy Die Castings Based on Ultrasound and Thermal Equilibrium[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1166-1170.
[1]李超,杨湘杰,郭洪民,王家宣,李振兴.超声波和热平衡复合作用对铝合金压铸件优化的效果[J].特种铸造及有色合金,2018,38(11):1166-1170. DOI： 10.15980/j.tzzz.2018.11.002.

Li Chao, Yang Xiangjie, Guo Hongmin, et al. Compound Optimization Effects of Aluminum Alloy Die Castings Based on Ultrasound and Thermal Equilibrium[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1166-1170. DOI： 10.15980/j.tzzz.2018.11.002.

摘要

采用超声振动热平衡法、直接热平衡法以及传统铸造工艺制备A356合金浆料

并以相同的浇注温度、模具温度、压射压力和压射速度进行压铸成形;对压铸件的圆心处和边缘处取样观测金相组织

并在压铸件的相同部位取样进行拉伸试验。通过对比分析

研究不同工艺条件下压铸件的金相组织及力学性能。结果表明

超声振动热平衡法半固态工艺条件下

压铸件的金相组织最细小、圆整、均匀

综合力学性能最好;直接热平衡法工艺条件下的次之;经T6热处理后压铸件的综合力学性能得到显著提高。

Abstract

The alloy slurry was prepared by ultrasound vibration thermal equilibrium method

direct thermal equilibrium method and traditional casting process.Then die-casting forming was conducted at the same pouring temperature

mold temperature

injection pressure and injection speed.The heart part and edge part of die castings were sampled

and the microstructure was observed.The same part of die castings was sampled for tension test.The effects of different process conditions on microstructure and mechanical properties of die castings were analyzed comparatively.The results show that the microstructure of die castings obtained by ultrasound vibration thermal equilibrium method semi-solid process presents the most tiny

round and uniform structure with the satisfied mechanical properties

and then that by direct thermal equilibrium method.After T6 treatment

the comprehensive mechanical properties of die castings are improved significantly.