铸造2025，Vol.74Issue(10)：1358-1365,8.
Al-5Ti-1B对铸造A356.2铝合金组织与性能的影响
Influence of Al-5Ti-1B on Microstructure and Mechanical Properties of Cast A356.2 Aluminum Alloy
曾根华 1冯俊鹏 1马腾飞 1王晓红 1吴凌剑 2吴凌锋2
作者信息
- 1. 全省空气动力装备智能制造重点实验室,浙江衢州 324000
- 2. 浙江明道热能科技有限公司,浙江衢州 324000
- 折叠
摘要
Abstract
This study investigates the effects of Al-5Ti-1B on the microstructure and mechanical properties of A356.2 aluminum alloy produced by traditional casting.The results demonstrate that the addition of 1％Al-5Ti-1B effectively refines the α-Al grain size.Simultaneously,the refined α-Al grains provided more uniform nucleation sites for eutectic Si,transforming its morphology from coarse elongated flake-like and needle-like to finer rod-like and short needle-like structures with homogeneous distribution.The fluidity improved after addition of 1％Al-5Ti-1B,reducing the porosity and improving the casting density of the samples extracted from different locations of the components.These improvements ultimately increased the strength and ductility simultaneously.After T6 heat treatment,the addition of 1％Al-5Ti-1B refined grain modifier to A356.2 alloy castings resulted in an average yield strength of 224 MPa and elongation of 4.5％,representing increases of 10.1％and 35.9％,respectively,compared to the unmodified A356.2 alloy.关键词
铝合金/Al-5Ti-1B/微观组织/力学性能/铸造Key words
aluminium alloy/Al-5Ti-1B/microstructure/mechanical properties/cast分类
金属材料引用本文复制引用
曾根华,冯俊鹏,马腾飞,王晓红,吴凌剑,吴凌锋..Al-5Ti-1B对铸造A356.2铝合金组织与性能的影响[J].铸造,2025,74(10):1358-1365,8.
