Год выпуска: 2015 Автор: Eva Fazakas Издательство: LAP Lambert Academic Publishing Страниц: 140 ISBN: 9783659597343
Описание
Studying the glass forming ability and devitrification of Al-based amorphous alloys we have prepared novel amorphous alloys which have primordial importance for preparation of compacts with the highest temperature stability and strength. The main results of the study are: 1. I have applied data processing methods known in the literature for Al-based amorphous alloys (both for the own and literature data) which was useful to place the Al-based alloys among the other metallic glasses (based on Zr, Fe, Cu,etc.) based on some physical characteristics, like heat of mixing, atomic mismatch, crystallization temperature and hardness: 1.1.A combination of the heat of mixing and atomic mismatch parameters have been used to assess the GFA of Al-based alloys.It can be stated that for Al based amorphous compositions the ?H is between -9 and -20 kJ/mole whereas for bulk metallic glasses (based on Fe, Cu, Pd, etc.) ?H is between -25 and -40 kJ/mole [S1,S2].The low GFA of Al based alloys can be...
