|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Computational Thermodynamics and Kinetics
||The Effect of Quenched-In Vacancies on the Kinetics of Coherent Cu-Precipitation in Fe-Cu Alloys
||Ivan Holzer, Ernst Kozeschnik
|On-Site Speaker (Planned)
In the present work, the effect of quenched-in vacancies on the kinetics of coherent Cu precipitation in alpha-iron is investigated. It is shown that, especially in the early stages of precipitation, quenched-in vacancies strongly accelerate the kinetics of the precipitation reaction. It has been observed previously that several experimental results from literature can only be explained if this effect is accounted for. In order to analyze the effect of quenched-in vacancies quantitatively, TTP-plots are calculated for an Fe-1.4wt.% Cu alloy in the temperature range between 400°C and 750°C and compared with the corresponding experimental data reported in literature. It is shown that the TTP curves for Cu-precipitation can only be consistently reproduced if the quenched-in vacancy effect is duly considered.
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