Effect of Homogenization Process on Microstructure and Mechanical Properties of 4047 Aluminum Alloy

Abstract

This study investigated the homogenization heat treatment process and microstructural evolution of 4047 aluminum alloy. The results revealed that the homogenization process induced partial dissolution of metastable phases and modification of the fine needle‐shaped eutectic Si. Within the 4047 aluminum alloy, the fine needle‐shaped eutectic Si underwent granulation, involving two stages: crystal dissolution and granulation of broken crystals. After optimal homogenization heat treatment, the eutectic Si phase transformed from a fine needle‐shaped structure to small, regular spherical structures, reducing stress concentration and improving the interfacial bonding capability and internal structure of the alloy matrix. This significantly reduces the likelihood of microcrack formation within the alloy and effectively hinders crack propagation, enhancing the alloy’s mechanical properties.This article is protected by copyright. All rights reserved.