STP1523: The Effect of Agitation and Quenchant Temperature on the Heat Transfer Coefficients for 6061 Aluminum Alloy Quenched in Distilled Water

    Maniruzzaman, Mohammed
    Worcester Polytechnic Institute (WPI), Worcester, MA

    Fontecchio, Marco
    Worcester Polytechnic Institute (WPI), Worcester, MA

    Sisson, Richard D.
    Worcester Polytechnic Institute (WPI), Worcester, MA

    Pages: 11    Published: Jan 2010


    Abstract

    A 6061 aluminum alloy probe was quenched using a Center for Heat Treating Excellence probe-quenching system in distilled water while varying bath temperature and the agitation level. Time versus temperature data were collected during the quench using a thermocouple embedded inside the probe. The surface heat transfer coefficients as a function of temperature were calculated using the Newtonian cooling approximation. The maximum heat transfer coefficient values ranged from 1054 W/m2·K for 100°C water with no agitation to 3822 W/m2·K for 5°C water with the agitation of 1850 r/min. The data also showed that at higher levels of agitation and lower bath temperatures, the maximum heat transfer coefficient increased.

    Keywords:

    quenching heat treatment, CHTE quench probe, aluminum alloy, heat transfer coefficients, water quench


    Paper ID: STP49146S

    Committee/Subcommittee: D02.02

    DOI: 10.1520/STP49146S


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