The influence of small impurity contents on the diffusion controlled stabilization of Cu-Zn-Al martensitic single crystals

The stabilization of the 18R stress induced martensite in Cu-Zn-Al single crystals has been measured as a function of ageing time in differently prepared crystals. It is concluded that only small impurity contents of a concentration similar to that of the quenched-in vacancies can affect notably the stabilization kinetics.