On the influence of precipitation on the Portevin-Le Chatelier effect

A model describing the interplay of precipitation and dynamic strain ageing is proposed. Both homogeneous and heterogeneous precipitation is considered. It is shown that as a result of precipitation in concentrated solid solutions the critical strains for the occurrence of the Portevin—Le Chatelier effect should exhibit an “inverse” behaviour with temperature and strain rate as compared to the behaviour observed in dilute solid solutions.