1) An apparent prerequisite to put the question is that martensite gets rather close to bainite in tempering as the dislocation density decreases and carbides precipitate. Although the generic crystallography (selection of OR variants) often keeps the same, from the viewpoint of final practical properties the process is equivalent to the bainitic transformation…

2) The confusion has become even stronger when S. Morito et al have found a curious transformation of purely pearlite steel under cold severe deformation

(2015, doi: 10.1016/j.matpr.2015.07.430):  dissolution of cementite and, hence, carbon-related tetragonality of the lattice i.e. BCC-to-BCT transition characteristic of martensite.

       Very sorry for vulgarization, this materials science issue resembles the following social problem actual for some people.  Allowing only for secondary sexual signs in everyday life, may one consider a trans-gender body as female (bainite), though GENETICALLY it remains male (martensite) ?

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