Effect of homogenization on microstructure of 3003 aluminium alloy ingot

doi:10.13251/j.issn.0254-6051.2024.09.038

Abstract

Abstract: Homogenization treatment was carried out at 580-620 ℃ for 4-10 h to study the effect of different homogenization processes on the microstructure evolution of 3003 aluminium alloy ingot. The results show that the precipitates in the alloy ingot are mainly MnAl₆((FeMn)Al₆) and Al_0.41MnSi_0.74(Al₁₂(FeMn)₃Si), while the MnAl₆((FeMn)Al₆) phase is almost completely dissolved during the homogenization process. However, the Al_0.41MnSi_0.74(Al₁₂(FeMn)₃Si) phase is gradually subject to aggregation, coarsening and dissolution during the homogenization process. With the increase of homogenization temperature and prolongation of holding time, the evolution of precipitates is accelerated gradually. The optimum homogenization process of the 3003 aluminium alloy which can quickly obtain uniformly distributed, round and coarse precipitates is holding at 600 ℃ for 8 h.

Key words: homogenization treatment, 3003 aluminium alloy, precipitated phase

CLC Number:

TG146.2

Zhang Wei, Chen Zijian, Lin Yongcheng. Effect of homogenization on microstructure of 3003 aluminium alloy ingot[J]. Heat Treatment of Metals, 2024, 49(9): 236-241.

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