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Article | REF: M240 V1

Precipitation hardening of aluminum alloys

Authors: Bruno DUBOST, Pierre SAINFORT

Publication date: October 10, 1991

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4. Precipitation mechanisms

4.1 Precipitation by germination and growth

According to the classical Gibbs theory extended to solid-state phase transformations by Turnbull and Fischer , lagermination, the initial stage of precipitation, assumes the formation of stable, solute-rich nuclei (with a composition very different from that of the solid solution) from the matrix, with a defined interface with the matrix. The nuclei may result from statistical fluctuations...

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