Mechanical Stabilization of Austenite against Bainitic Reaction in Fe–Mn–Si–C Bainitic Steel
نویسندگان
چکیده
منابع مشابه
Austenite films in bainitic microstructures
Bainitic microstructures in which fine platelets offerrite are intimately mixed with films of austenite are known to exhibit good combinations of strength and toughness. It isfound that the thickness of these austenitefilms can be estimated by assuming that the carbon diffusion field around an existing plate offerrite prevents the close approach of another parallel plate. This is because the re...
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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 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 کاملEnhanced Thermal Stability in Nanostructured Bainitic Steel
We report an attempt at increasing the thermal stability of nanocrystalline bainite to tempering heat-treatments, by enhancing the silicon concentration of the alloy. Validation experiments have been conducted using synchrotron X-radiation during tempering heat treatment. It is found that the change in alloying successfully stabilises the austenite at elevated temperatures by retarding cementit...
متن کاملTempering of hard mixture of bainitic ferrite and austenite
Recent work has shown that bainitic ferrite plates produced by transformation at low temperatures can be as thin as 20 nm with a hardness in excess of 650 HV30, tensile strengthy2.3 GPa and toughnessy30 MPa m. Because these properties rely on the fine scale of the microstructure, a study has been carried out in relation to the tempering resistance of steel over the temperature range 350 – 750uC...
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ژورنال
عنوان ژورنال: Materials Transactions, JIM
سال: 1996
ISSN: 0916-1821,2432-471X
DOI: 10.2320/matertrans1989.37.579