On coarsening of cementite during tempering of martensitic steels
نویسندگان
چکیده
منابع مشابه
Modelling and characterisation of Mo2C precipitation and cementite dissolution during tempering of Fe-C-Mo martensitic steel
The precipitation and Ostwald ripening behaviour of needle shaped Mo2C particles during the tempering of a ternary Fe –C –Mo martensitic steel have been characterised and modelled, taking account of local equilibrium, the capillarity effect, and the simultaneous enrichment and dissolution of cementite. Particles of Mo2C are represented as paraboloids of revolution, with the tip radius chosen to...
متن کاملModelling and characterisation of V4C3 precipitation and cementite dissolution during tempering of Fe-C-V martensitic steel
The precipitation and Ostwald ripening behaviour of V4C3 (plate shaped) particles during the tempering of a ternary Fe – C –V martensitic steel have been characterised and modelled, taking account of local equilibrium, the capillarity effect, and simultaneous cementite enrichment and dissolution. Particles of V4C3 are represented as parabolic cylinders of revolution, with the tip radius chosen ...
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The mechanism by which relatively small concentrations of silicon influence the precipitation of cementite from carbon supersaturated austenite and ferrite are investigated. It is found that one condition for the retardation of cementite is that the latter must grow under para-equilibrium conditions, i.e. the silicon must be trapped in the cementite. However, this is not a sufficient condition ...
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Stability of martensite with pulsed electric current in dual-phase steels
Softening frequently occurs in dual-phase steels under isothermal tempering of martensite. Recently, non-isothermal tempering is implemented to decrease the softening process in dualphase steels. Here, we have discovered using high power electropulsing treatment can significantly enhance the strengthening effects via the formation of ultrafine-grained ferrite with nano-cementite particles in te...
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ژورنال
عنوان ژورنال: Materials Science and Technology
سال: 2020
ISSN: 0267-0836,1743-2847
DOI: 10.1080/02670836.2020.1740380