EFFECT OF ADDITION OF NICKEL ON LM 28 PISTON ALLOY
Keywords:
Al-Si-Cu-Mg-Ni Alloys, Ni content, AlNi Phase (AlNi2Si) 8C PhaseAbstract
In this study, the influence of Nickel content on hardness and microstructural characterization of die cast Al-Si-Cu-Mg-Ni alloys have been investigated. Al-Si alloy with 0.620 to 1.12 % nickel have been utilized for this purpose. Solidification of Al-Si-Cu-Mg-Ni alloys have been prepared by melting in resistance heating furnace with a crucible and casting in a metallic die at 720°C. The solution treatment has been performed at 515 °C for 4 hours quench in air blast, followed by precipitation hardening treatment at 185 °C for 8 hours. The effects of nickel content and heat treatment on mechanical properties have been investigated.
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