Affiliation:
1. Dalian University of Technology
Abstract
A 10-T magnetic field was introduced to investigate precipitation behavior of
Al-4wt.%Cu alloys during short time aging at 130°C. DSC, Vickers micro-hardness tests, EPMA
and TEM were used to characterize aging process. The results show that high magnetic field
improves the diffusion of Cu atom, lowers the stability of G.P.( I )zone and speeds up its solution,
and lowers the precipitation temperature of the phases, thus accelerates the ageing course during the
early stage at low temperature. Furthermore the high magnetic field has influence on the size of the
θ″-phase. The micro-hardness of the field-treated specimen is always higher than the non-field ones,
which indicates the high magnetic field strengthens the hardening effect.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
3 articles.
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