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Liquid Ga Penetration along Al Grain Boundaries: Effect of External Stress and Ga Undercooling

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Abstract:

The effects of compressive stress and undercooling of Ga to liquid gallium penetration along grain boundaries (GBs) of aluminum were investigated. It was shown that the penetration rate does not change with the temperature if gallium is in liquid state. The effect of compressive stress applied to Al samples was demonstrated. The time to wetting of all aluminum GBs increased several orders of magnitude if the compressive stress was between 0.1 and 6 MPa. It was proved that solid-liquid transformation does not take place during penetration process.

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Periodical:

Defect and Diffusion Forum (Volume 249)

Pages:

231-234

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.249.231

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Online since:

January 2006

Authors:

Olga Kozlova, Alexey Rodin

Keywords:

Aluminum (Al), Grain Boundary, Liquid Gallium, Penetration, Stress

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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