• investigation of quench sensitivity and transformation kinetics during isothermal treatment in 6082 aluminum alloy

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 521
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the quench sensitivity of 6082 aluminum alloy was investigated by time–temperature–property (ttp) curves. the sensitive temperature of quenching ranges from 250 °c to 440 °c in 6082 al-alloy, and the nose temperature is about 360 °c. during isothermal treatment process, the mg2si particles precipitate from the supersaturated solid solution, and the precipitation rate is the highest at the nose temperature. a number of rod-shaped β′ and β particles precipitate in the early stage of isothermal treatment at 360 °c. prolonging the holding time leads to more and coarser β particles in the matrix. both the precipitation of β′ and β particles results in loss of solute and decreasing of the subsequent age hardening effect. also, the important coefficients k2k5 and critical cooling rate for 6082 al-alloy are identified, and the properties after different rates of cooling were predicted using quench factor analysis.

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