铸造2023，Vol.72Issue(12)：1607-1613,7.
机械振动对消失模壳型铸造A357合金显微组织和力学性能的影响
Effect of Mechanical Vibration on Microstructure and Mechanical Properties of A357 Alloy with Lost Foam Shell Casting
杨琪琳 1王月雷 2陈隆波 3曾效舒4
作者信息
- 1. 共青科技职业学院,江西共青城 332020
- 2. 海南科技职业大学,海南海口 570100
- 3. 共青科技职业学院,江西共青城 332020||博仁大学,泰国大曼谷府10700
- 4. 南昌大学,江西南昌 330000
- 折叠
摘要
Abstract
The effects of mechanical vibration frequency on microstructure,mechanical properties,and fracture behavior of A357 aluminum alloy during the solidification process of investment casting were investigated.The results showed that the mechanical vibration at different frequencies significantly improves the size and morphology of α-Al primary phase and eutectic silicon particles and improves the mechanical properties and density of A357 alloy.With the increasing of vibration frequency,the grain size and secondary dendrite arm spacing of A357 alloy decreased gradually,and the mechanical properties and density of A357 alloy increased gradually.The morphology of α-Al phase and eutectic silicon particles changed from coarse dendrite to equisetic and from coarse flake to fibrous.The higher the amplitude,the larger the average grain size,and the mechanical properties of the alloys decreased with the increase of amplitude.In addition,the mechanical vibration changed the fracture morphology of A357 alloy from brittle fracture without vibration to obvious plastic fracture,and with the increase of vibration frequency,the dimples were deepened and distributed more evenly.关键词
A357铝合金/消失模壳型铸造/机械振动/显微组织/力学性能Key words
A357 aluminum alloy/lost foam shell casting/mechanical vibration/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
杨琪琳,王月雷,陈隆波,曾效舒..机械振动对消失模壳型铸造A357合金显微组织和力学性能的影响[J].铸造,2023,72(12):1607-1613,7.
