Prediction of Carbide Precipitation Using A Combined Partial Equilibrium- Para-Equilibrium - Lever Rule Approximation in Automobile Gear Materials
IOP Conference Series-Materials Science and Engineering(2019)
Abstract
The carbide precipitation nature of an automobile gear material, i.e. Fe-C-Mn-Si-Cr-Mo alloy, during carburization and element addition process are investigated through PE+PA+LR prediction. Results show that, carburization process greatly increases the amount of cementite as well as the hardness index at the surface part. Besides, the addition of Ti and V helps to formation of TiC and (V,Mo)C carbides but suppress the precipitation of cementite, which contributes equivalent hardness at surface and lighter weight to the alloy.
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Key words
carbide precipitation,lever rule approximation,combined partial equilibrium,para-equilibrium
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