November 20, 2025MetalsOpen Access

Evaluation of Microstructure and Tensile Properties of Al-12Si-4Cu-2Ni-0.5Mg Alloy Modified with Ca/P and TCB Complex

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Discussion

Evaluation reveals phosphorus modification improves microstructure and plasticity of an Al alloy, suggesting enhanced heat treatment effects.

Ultimate tensile strength increased by 36.5% with heat treatment at high temperature, enhancing plasticity.
Microstructure analysis showed significant improvement under phosphorus modification and heat treatment conditions.
Assessment of alloy strength employed Orowan strengthening at room temperature, load transfer at high temperatures.
Findings imply potential optimization strategies for piston alloy applications requiring improved mechanical properties.

Sun et al. (2025) studied this question.

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Evaluation reveals phosphorus modification improves microstructure and plasticity of an Al alloy, suggesting enhanced heat treatment effects.