Retained Austenite Characteristics and Tensile Properties in a TRIP Type Bainitic Sheet Steel.
نویسندگان
چکیده
منابع مشابه
Mechanical Stabilisation of Retained Austenite in δ–TRIP Steel
Recent research suggests that extraordinary combinations of strength and ductility can be achieved in the so–called δ–TRIP steels, which contain ferrite, bainite and austenite. A part of the reason for the ductility of almost 40% elongation at a strength of some 900MPa, is believed to be the optimal stability of the austenite to plastic deformation. We demonstrate here that mechanical stabilisa...
متن کاملIdentification of Retained Austenite, Ferrite, Bainite and Martensite in the Microstructure of TRIP Steel
Transformation induced plasticity (TRIP) steels have a vast application in automotive industry because of theirhigh strength, high ductility and hence excellent energy absorption capacity. These characteristics of TRIPsteels are due to the existence of retained austenite in their microstructures in the ambient temperature, whichtransforms to the martensite phase during deforma...
متن کاملRefinement of retained austenite in super-bainitic steel by a deep cryogenic treatment
1) Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, 430081 China. 2) Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3226 Australia. 3) Department of Engineering and Innovation, The Open University, Walton Hall, Milton Keynes, MK7 6AA UK. 4) Department of M...
متن کاملThermal Stability of Retained Austenite in Bainitic Steel: an in situ study
The tempering of two–phase mixtures of bainitic ferrite and carbon–enriched retained austenite has been investigated in an effort to separate the reactions that occur at elevated temperatures from any transformation during cooling to ambient conditions. It is demonstrated using synchrotron X–radiation measurements, that the residue of austenite left at the tempering temperature partly decompose...
متن کاملTensile Ductility of Nanostructured Bainitic Steels: Influence of Retained Austenite Stability
High silicon (>1.5%) steels with different compositions were isothermally transformed to bainite at 220 and 250 ◦C to produce what is often referred to as nanostructured bainite. Interrupted tensile tests were carried out and the retained austenite was measured as a function of strain. Results were correlated with tensile ductility. The role of retained austenite stability is remarkably underli...
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ژورنال
عنوان ژورنال: ISIJ International
سال: 2000
ISSN: 0915-1559
DOI: 10.2355/isijinternational.40.902