The austenite-to-martensite transformation in a partially hardened stainless steel containing 17wt %Cr, 7wt %Ni and 1wt % Al was investigated with Vibrating Sample Magnetometry and Electron Back-Scatter Diffraction. Magnetometry demonstrated that measurable martensite formation can be suppressed on fast cooling to 77K as well as on subsequent fast heating to 373 K. Surprisingly, martensite form...

Two mechanisms inconsistent each other, a relaxation of type II internal stress and presence mobile dislocation, were previously proposed to describe the low elastic limit as-quenched lath martensite steels. In this study, neutron diffraction experiments performed revisit deformation behavior steel. Dislocations with very dense in order 1015 m−2 observed single phase condition Fe–18Ni alloy. Th...

Herein, considerable insight is provided into the evolution of strain-induced martensite and mechanical properties Fe–19Cr–4Ni–3Mn–0.15N–0.15C wt% austenitic stainless steel (in short Cr19NC15.15) during deformation at room temperature cryogenic temperatures. In situ magnetic measurements tensile tests various temperatures are conducted. The triggering stress ? trigg. ? ? ? ? required for forma...

It has been clarified that deformation and annealing of martensite starting structure can produce ultrafine-grained structure in low carbon steel.  This study aims to investigate the texture evolution and mechanical properties of samples with martensite structure deformed by two different forging processes. The martensitic steel samples were forged by plane strain compression and multi-directio...

Concerning a Fe-Mn-Si shape memory alloy, it was thought of magnetic measurements to follow the evolutions with temperature of an as quenched steel before and after a 2.5% prestrain. INTRODUCTION The shape memory effect, related to the reverse E -. y transformation of a single crystal of FeMn-Si, was fist shown by Sato (1). Many works are devoted to polycrystalline Fe-Mn-Si steels (2,3). The E ...