Premium
Decomposition of hypo‐eutectoid Fe‐C austenites; a numerical diffusion model
Author(s) -
Silalahi V. M. Mesnan,
Onink Marcel,
Zwaag Sybrand
Publication year - 1995
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199501159
Subject(s) - austenite , eutectic system , ferrite (magnet) , diffusion , growth rate , materials science , carbon fibers , metallurgy , decomposition , thermodynamics , carbon steel , chemistry , mathematics , composite material , alloy , physics , microstructure , geometry , corrosion , organic chemistry , composite number
A numerical model is presented which describes the growth rate of ferrite during the decomposition of austenite in Fe‐C alloys. The growth rate is modelled assuming carbon diffusion in austenite as the rate determining mechanism. The effect of the definition of the diffusion coefficient of carbon in austenite on the growth rate is shown. The model is used to examine the effects of initial carbon concentration, the local carbon concentration in austenite at the interface and the initial austenite grain size on the growth rate. Good agreement between theoretical results and both new and existing experimental data was observed.