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The extensive utilization of the lightweight AlSi10Mg alloy in automotive and aerospace sectors stems from its high strength, favorable mechanical properties, and weldability, owing to its near eutectic composition of Al and Si. Age hardening is significantly influenced by Mg. This study examines AlSi10Mg alloy specimens produced at varying heights via laser powder bed fusion (LPBF), analyzing microstructure. Results reveal differences in melt pool size distribution and microstructural morphology at different heights, attributed to variations in cooling rate and gas entrapment during LPBF. Consequently, these microstructural variances will lead to diverse strengthening mechanisms and mechanical properties across specimen heights.

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Alterations in Microstructure and Mechanical Characteristics Across Various Heights of Additively Manufactured AlSi10Mg

  • 会议论文

  • 发表日期：

    2025年

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  • Parisa Moazzen,
  • Mohsen Mohammadi

摘要

The extensive utilization of the lightweight AlSi10Mg alloy in automotive and aerospace sectors stems from its high strength, favorable mechanical properties, and weldability, owing to its near eutectic composition of Al and Si. Age hardening is significantly influenced by Mg. This study examines AlSi10Mg alloy specimens produced at varying heights via laser powder bed fusion (LPBF), analyzing microstructure. Results reveal differences in melt pool size distribution and microstructural morphology at different heights, attributed to variations in cooling rate and gas entrapment during LPBF. Consequently, these microstructural variances will lead to diverse strengthening mechanisms and mechanical properties across specimen heights.