Effect of particles in promoting twin nucleation in a Mg-5 wt.% Zn alloy
Date
2010
Authors
Robson, J.D.
Stanford, N.
Barnett, M.R.
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Journal article
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Scripta Materialia, 2010; 63(8):823-826
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Abstract
The number of {101̄2} twins formed in a compressed Mg-5 wt.% Zn alloy increased when precipitate particles were present, reaching a maximum in the peak-aged condition. Particles were observed to promote twin nucleation, but inhibit twin growth. A simple model has been developed to show that in peak- and over-aged condition the increase in twin number is accurately predicted by assuming the additional stress driving twin nucleation equates to the Orowan stress inhibiting twin growth.
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Copyright 2010 Acta Materialia Inc.