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

    Volume 7, Issue 1 (January 2010)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 8 December 2009

    Page Count: 8


    Maniruzzaman, Mohammed
    Center for Heat Treating Excellence, Materials Science and Engineering Program, Mechanical Engineering Dept., Worcester Polytechnic Institute (WPI), Worcester, MA

    Fontecchio, Marco
    Center for Heat Treating Excellence, Materials Science and Engineering Program, Mechanical Engineering Dept., Worcester Polytechnic Institute (WPI), Worcester, MA

    Sisson, Richard D.
    Center for Heat Treating Excellence, Materials Science and Engineering Program, Mechanical Engineering Dept., Worcester Polytechnic Institute (WPI), Worcester, MA

    (Received 25 April 2008; accepted 13 October 2009)

    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.


    Paper ID: JAI101840

    DOI: 10.1520/JAI101840

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    Title The Effect of Agitation and Quenchant Temperature on the Heat Transfer Coefficients for 6061 Aluminum Alloy Quenched in Distilled Water
    Symposium , 0000-00-00
    Committee E37