Effect of carbon and alloyed elements in steel on carbide formation during tempering
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The type and stability of the carbides formed as the result of tempering are determined by the ratio between the alloyed element and carbon (M/C). For each alloyed element there is a characteristic value of the ratio which determines the limits of stability of cementite and special carbides for a given temperature and period of heating.
The type and the stability of the carbides formed are affected not only by the value of the M/C ratio but also by the concentration of the alloyed element in the steel. For a given M/C ratio an increase in the concentration of the alloyed element widens the area of stability of the special carbide at the expense of the cementite type carbide.
KeywordsCarbide Expense Cementite Alloyed Element Carbide Formation
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