August 1, 2025AIP AdvancesOpen Access

Effects of Si and Mn contents on grain refinement microstructure and properties of Al–Cu alloys fabricated by powder metallurgy

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Al-cu alloys exhibited improved properties with optimal si and mn levels, enhancing hardness and density.
Specifically, si addition to 1 wt. % and mn to 8 wt. % resulted in a hardness of 81.5 HB and tensile strength of 145.2 MPa.
The method used involved powder metallurgy technology for alloy fabrication and analysis of microstructure evolution.
The results suggest a balance in si and mn content is essential to prevent brittleness and preserve toughness.

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Assessment of si and mn effects on microstructure and properties in al-cu alloys fabricated by powder metallurgy shows enhanced hardness and density.

Yang et al. (2025) studied this question.

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Assessment of si and mn effects on microstructure and properties in al-cu alloys fabricated by powder metallurgy shows enhanced hardness and density.