Effect of Deformation Temperature on the Mechanical Behavior of a New TRIP/TWIP Steel Containing 21% Manganese

In recent years, trip/twip steels have been the focus of great attention thanks due to their excellent tensilestrength-ductility combination. the compression tests were performed at different temperatures from 25 to 1000°cto study the mechanical behavior of advanced austenitic steel with 21% manganese plus bearing ti. the resultsindicated that the plastic deformation is controlled by deformation-induced martensite and mechanical twinningfrom 25 to 100°c. however, at temperatures 200 to 1000°c the deformation twinning was merely observed.the occurrence of mechanical twinning at such high temperatures is a ?rst-time observation in high manganeseaustenitic steels. such mechanical twins led to grain refinement via grain partitioning.