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Columnar to equiaxed transition in tin-lead alloys

University of British Columbia

The columnar to equiaxed transition has been examined experimentally in lead-tin alloys. The effect of thermal conditions during solidification, melt superheat, and alloy composition on the transition have been considered. In directionally solidified alloys, the position at which the transition occured was dependent on the temperature distribution in the system, occuring when a specific low temperature gradient was reached at the advancing interface. Melt superheat did not influence the transition position. The alloy content affected the transition position, the transition occuring earlier at higher alloy contents. Adding particles to the melt did not change the position of the transition.

Text

2010-07-10

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http://hdl.handle.net/2429/26313

Materials Engineering

University of British Columbia

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