Microstructure and mechanical properties of ZL205A aluminum alloy aged under pulsed magnetic field

doi:10.13251/j.issn.0254-6051.2025.01.015

Abstract

Abstract: Effect of aging under pulsed magnetic field on microstructure and mechanical properties of ZL205A aluminum alloy was studied by means of scanning electron microscope, X-ray diffractometer and universal testing machine. The results show that the pulsed magnetic field increases the vacancy formation energy ΔS_V during the aging process of the ZL205A aluminum alloy, and the atomic diffusion is easier, which leads to the appearance of uniform and fine precipitation phases in the matrix after aging. After the pulsed magnetic field aging treatment (195 ℃×4 h), the tensile strength and elongation are 408 MPa and 11%, respectively. Compared with the conventional aging treatment (155 ℃×9 h) in a factory, the tensile strength is basically the same, the elongation is 64% higher and the aging time is 55% shorter.

Key words: ZL205A aluminum alloy, pulsed magnetic field, aging treatment, diffusion

CLC Number:

TG146.21

Zhang Ying, Ma Yonglin, Liu Yongzhen, Xing Shuqing. Microstructure and mechanical properties of ZL205A aluminum alloy aged under pulsed magnetic field[J]. Heat Treatment of Metals, 2025, 50(1): 97-102.

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