The Ms temperature and morphology of martensite in Fe-31 Pct Ni-0.23 Pct C alloy

The Morphology of Strain-Induced Martensite and Thermally Transformed Martensite in Fe–Ni–C Alloys

“…In this investigation, the experiments have been carried out using various Fe-Ni-C alloys in order to conduct researches into the morphology of strain-induced martensites formed over a wide temperature range morphology of strain-induced martensite varied in three types with the formation temperature. Furthermore, it was found that the morphology of thermally transformed martensite also varied in three types with the formation temperature (i. e., Ms temperature) (18). The variation in morphology with the formation temperature corresponded well to that of strain-induced martensites.…”

Effect of Mo on the magnetic properties of martensitic phase in Fe–Ni–Mo alloys

“…It may be concluded that Mo element influences both on the stabilization of austenite and on the martensite start temperature (M S ) like other some alloying elements. Also Maki et al [16,17] investigated the effect of Ms temperature on martensite morphology.…”

Analysis of effect of alloying elements on martensite start temperature of steels

“…The martensite consists of bundles of laths (lath-shaped martensite) with a high density of dislocations inside each lath in low carbon steels and, as carbon content increases, it changes to lenticular (lens-shaped martensite) with a midrib and a high density of dislocations as well as internal twins. 30 Several studies [31][32][33][34] An alternative explanation is outlined considering that higher austenitisation temperatures are required to achieve the same PAGS in low carbon steels than in high carbon steels. Therefore, a more likely cause of rising the M s temperature as PAGS increases is the reduction of the energy needed for the complementary shear during transformation, which originates in the elimination of lattice imperfections due to higher austenitisation temperature.…”