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    STP1523

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

    Published: 01 January 2010


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    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


    Author Information:

    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


    Committee/Subcommittee: D02.02

    DOI: 10.1520/STP49146S