Accelerated Spheroidization of Cementite in Sintered Ultrahigh Carbon Steel by Warm Deformation
نویسندگان
چکیده
منابع مشابه
Load partitioning between ferrite and cementite during elasto-plastic deformation of an ultrahigh-carbon steel
An ultrahigh-carbon steel was heat-treated to form an in situ composite consisting of a fine-grained ferritic matrix with 34 vol.% submicron spheroidized cementite particles. Volume-averaged lattice elastic strains for various crystallographic planes of the a-Fe and Fe3C phases were measured by synchrotron X-ray diffraction for a range of uniaxial tensile stresses up to 1 GPa. In the elastic ra...
متن کاملNeural Network Prediction of Warm Deformation Flow Curves in Ferrite+ Cementite Region
Many efforts have been made to model the the hot deformation (dynamic recrystallization) flow curves of different materials. Phenomenological constitutive models, physical-based constitutive models and artificial neural network (ANN) models are the main methods used for this purpose. However, there is no report on the modeling of warm deformation (dynamic spheroidization) flow curves of any kin...
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The main contribution of the present work is to investigate the capability of exponential-type constitutive equationto model the warm deformation flow curves of a eutectoid steel in the temperature range of 620-770 °C andat the strain rates in the range of 0.01-10 s-1 conducted on a Gleeble-1500 thermomechanical simulator. Warmdeformation in this temperature range f...
متن کاملneural network prediction of warm deformation flow curves in ferrite+ cementite region
many efforts have been made to model the the hot deformation (dynamic recrystallization) flow curves of different materials. phenomenological constitutive models, physical-based constitutive models and artificial neural network (ann) models are the main methods used for this purpose. however, there is no report on the modeling of warm deformation (dynamic spheroidization) flow curves of any kin...
متن کاملMolecular Dynamics Study of Carbon Diffusion in Cementite
1. Introduction Although cementite (Fe 3 C) is a most important phase in steels, at the same time, there is very little known in regard to the fundamental properties of Fe 3 C. This lack of information is largely a result of this compound being metastable with respect to its decomposition products: C-saturated ferrite or austenite (depending on temperature) and graphite. It is very difficult to...
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ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: 2075-4701
DOI: 10.3390/met11020328