Memoirs of the Faculty of Engineering, Okayama University
Published by Faculty of Enginerring, Okayama University

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Memoirs of the School of Engineering, Okayama University

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Effect of Surface and Grain Boundary on the Reversion of Age-Hardened Al-15mass % Zn Alloy

榊原 精 Department of Mechanical Engineering
Kanadani, Teruto Okayama University of Science
Reversion of the age-hardened Al-15mass % Zn alloy, in which ellipsoidal GP zones were formed, was investigated by hardness test. Ellipsoidal zones were reverted more quickly near the surface and grain boundary than in the interior, as spherical zones did. The results confirm their role as sources for vacancies in reversion.