• effect of a two-step solution heat treatment on the microstructure and mechanical properties of 332 aluminium silicon cast alloy

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 480
    • تعداد پرسش و پاسخ ها: 0
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     this paper investigated the effect of a two-step solution heat treatment on the mechanical properties and silicon-rich phase of 332 aluminium alloy. traditional single-step t6 solution treatment (495 °c/6 h) increased the hardness value of the alloy by 5.96%, increased the tensile strength by 20.42% and reduced the elongation by 3.97%. two-step solution treatment of the alloy (495 °c/2 h followed by 515 °c/4 h) increased the hardness value by 6.64%, increased the tensile strength by 16.01%, and reduced the elongation by 4.67% compared to the as-cast samples. both solution treatments were followed by hot water quenching (75–90 °c) and artificial aging at 250 °c for 4 h. the difference in mechanical properties after heat treatment can be linked to the refinement and the spheroidisation of the silicon-rich phase in the alloy.

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