Can a single-phase solid solution have a martensitic transformation?

[negarina]

TL;DR Summary

is there any causality or correlation between number of phases and martensitic transition?

I'm trying to investigate the possibility of martensitic transformation in a non-iron alloy, described as a single-phase alpha-solid-solution (Nickel-Silver CuNi12Zn25Pb1, CW404J). I know that Cu-Ni-Zn alloys with higher zinc amounts show even shape memory effects. And that CuNi12Zn25Pb1 is no Shape Memory Alloy. And that Nickel-Silver alloys with Zn>32% are two-phase (alpha-Beta) solid solutions. So I wonder (and searched) whether there is causality or correlation between being a two-phase (and not single-phase) solid solution and having the ability of martensitic transformation (and Shape Memory Effect).

 

[Navin A S]

The answer to this question depends on the exact composition of the alloy. Generally speaking, martensitic transformation is more likely to occur in two-phase alloys than in single-phase alloys because the presence of multiple phases can enable the formation of different crystal structures and textures. However, this is not always the case, as some single-phase alloys may also undergo martensitic transformations, depending on their composition. Therefore, it is not possible to definitively answer your question without further information regarding the exact composition of the alloy.