Abstract
The demixtion of a solid solution and its subsequent evolution can be described by scaling laws proposed either by J.S. Langer et al. or J. Marro et al. Both theories use very different physical concepts, respectively spinodal decomposition or Monte-Carlo calculations. We have performed small angle X-ray scattering in an Al-22% at. Zn alloy in order to test validity of these theories. In the temperature range 0.6–0.7 T c , a very good agreement between experimental results and both theories is observed. We suggest that the existence of the two different mechanisms (spinodal decomposition or nucleation and growth) cannot be confirmed simply by the verification of one of these theories. For the AlZn system and with our experimental conditions, it appears first that the theoretical analysis of Langer gives a rather good representation of the demixion process and secondly that the numerical experiments by computer simulation made by J. Marro lead to a kinetic of evolution very close to the physical reality.
Sign-in/Register to access full text options 
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
