|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||144 Retained Austenite Characteristics and Tensile Properties in TRIP Assisted Steel
|On-Site Speaker (Planned)
Retained austenite characteristics and carbide formation behavior in newly developed 0.15%C-1.0%Si-2.5%Mn-Cr-Mo TRIP-aided steel with martensite matrix structure (TRIP-aided martensitic steel; TM steel) were investigated. If the 0.2%C-1.5%Si-1.5%Mn TM steel (base TM steel) was processed by annealing at 900°C and then partitioning at temperatures lower than 250°C, volume fraction of 3vol% and carbon concentration of 1.0mass% of retained austenite were completed in the steel with tensile strength of about 1300MPa. Fine cementite films were appeared in the martensite lath structure even just after quenching which are not found in the other types of TRIP-aided steels different matrix structure. Addition of Cr, Mo into the base TM steel raised upper limit partitioning temperature where high volume fraction and stability of retained austenite are maintained.