Effects of Retained Austenite Stability on Mechanical Properties of High Strength TRIP Steel
2012 ◽
Vol 602-604
◽
pp. 287-293
Keyword(s):
Mechanical stability of retained austenite and its effect on mechanical properties of high strength TRIP steel were studied by means of OM, SEM, TEM, XRD, and mechanical testing after various heat treatments. Results revealed that the film-type retained austenite located between bainite laths with high carbon content showed gradual martensitic transformation with strain, demonstrating a good TRIP effect. Samples annealed at 800°C and held at 420°C showed an optimum value of strength and ductility product up to 18381.2MPa%. Transformation kinetics of the retained austenite were evaluated through tensile tests and fitted by the function y=0.86-0.86×exp(-Ax). The fitting results were good.
2013 ◽
Vol 738-739
◽
pp. 212-216
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2018 ◽
Vol 941
◽
pp. 292-298
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2014 ◽
Vol 936
◽
pp. 1283-1289
2017 ◽
Vol 62
(4)
◽
pp. 2331-2338
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Keyword(s):