Strain-induced Transformation Behaviour of Retained Austenite and Tensile Properties of TRIP-aided Steels with Different Matrix Microstructure

Tempering Effects on the Stability of Retained Austenite and Mechanical Properties in a Medium Manganese Steel

“…3. Tempering at a temperature of 600°C, the partitioning of carbon into austenite, 28) which was due to dissolving of carbides, improved austenite stability, leading to increase of retained austenite and carbon concentrate as shown in Fig. 3.…”

“…[1][2][3][4] However increased strength generally means decreased ductility of steels, such for the IF steel with strength about 300 MPa and ductility about 45%, 5) whereas for the Martensitic steels with strength about 1 500 MPa or more but ductility only about 10%. 6) This decreased ductility limits the application of the high strength and ultrahigh strength steel due to their worse formability and crush properties.…”

Local Plastic Indentation Resistance of Retained Austenite in Bearing Steel

“…Although the film-like of RA is more stable than that of blocky during uniform tensile deformation. [23][24][25] The inverse mechanical stability of RA during nanoindentation compared to uniform tensile test may imply different mechanisms, which needs to be further studied.…”

Metallurgical and Mechanical Properties of Fusion Zones of TRIP Steels in Laser Welding

“…By mass balance, the carbon content in the retained austenite of the Al-alloyed steel is lower, which is understood to reduce austenite stability during deformation (i.e., leading to nearly complete transformation to martensite at low strain levels) and a decrease in uniform elongation. 25,26) In the case of the Si-alloyed steel fusion zone, the finding of very little change in ductility with strain rate is not surprising and apparently due to its entirely martensitic microstructure. For the Al-alloyed steel, the fusion zone also shows little elongation variation in spite of the presence of retained austenite.…”