3D MICROSTRUCTURAL FINITE ELEMENT SIMULATION OF MARTENSITIC TRANSFORMATION OF TRIP STEELS

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SERKAN TOROS
FAHRETTIN ÖZTÜRK

Abstract

IN THIS PAPER THE EFFECTS OF DEFORMATION MODES ON MARTENSITIC TRANSFORMATION FOR TRIP STEELS WHICH ARE COMPOSED OF FERRITE, BAINITE AND RETAINED AUSTENITE IS INVESTIGATED IN THE VIEW OF THE MICROSTRUCTURAL LEVEL. FOR THIS PORPOISE THE SIMULATIONS ARE RUN FOR A SYNTHETICALLY GENERATED MICROSTRUCTURE WHICH HAVE 55 % FERRIT, 35 % BAINITE AND 10 % RETAINED AUSTENITE. IN THE SIMULATIONS TENSILE, BIAXIAL AND SHEAR TYPE DEFORMATION MODES ARE CONSIDERED. THE RESULTS REVEAL THAT BIAXIALLY LOADED MICROSTRUCTURE HAS THE MAXIMUM AMOUNTS OF MARTENSITE PHASES AT THE END OF THE GIVEN DEFORMATION AND THE LESS MARTENSITE IS OCCURRED IN THE SHEAR TYPE LOADING CONDITION.

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SERKAN TOROS, NIĞDE ÖMER HALISDEMIR UNIVERSITY, FACULTY OF ENGINEERING, DEPARTMENT OF MECHANICAL ENGINEERING, NIGDE, TURKEY

DEPARTMENT OF MECHANICAL ENGINEERING