Abstract
The homogeneous nucleation kinetics of the L12 A13Sc phase in the face-centered cubic (fcc) matrix of an A1-0.11 at. pct Sc alloy were measured at 561 and 616 K using the isothermal transformation technique and transmission electron microscopy (TEM). Applying classical homogeneous nucleation theory in conjunction with available thermodynamic data, an average interphase boundary energy of about 94 ±23 mJ/m2 was estimated from the nucleation rate data. This energy was found to vary weakly with temperature. The effects of heat-treatment technique (isothermal transformationvs quench and age) on nucleation kinetics indicate that quenched-in vacancies may influence nucleation kinetics primarily by increasing the interdiffusion of Sc in Al.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
