Abstract
AbstractBy internal friction technique, the behaviour of quenched‐in vacancies and their influence on the martensitic transformation of the Cu–11.9Al–2.5Mn alloy has been studied. It is found that the reverse martensitic transformation temperature Tp follows a non‐monotonous dependence on quenching temperature Tp, of which the presence of a maximum Tp value is attributed to the different vacancy formation energies in the ordered and disordered phases. The background internal friction decreases with increasing ageing time due to migration of vacancies and resultant pinning effect on the phase interfaces and dislocations. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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