Experimental study of the stress state and strain rate dependent mechanical behaviour of TRIP-assisted steels

This paper presents an investigation into the effect of different stress states and strain rates on austenite-to-martensite transformation during plastic straining a Q&P steel. Different are imposed to steel using purposed-designed samples. The sample geometries, including in-plane shear, dogbone plane samples, optimised by finite element modelling. Tensile tests performed at 0.001 s -1 , 10 500 . Digital image correlation is used capture fields entire deformation process. mechanical results indicate positive rate sensitivity for both shear specimens negative sample. In addition, influence level more pronounced than