Order disorder transitions in Fe-based alloys

Order disorder transitions in Fe-based alloys

International Conference on Materials Science and Materials Chemistry
August 20-21, 2018 | Paris, France

Boulouma Amor

ESTI of Annaba, Algeria

Scientific Tracks Abstracts : Mater Sci Nanotechnol

Abstract:

The order-disorder transition in Fe-rich Fe-Al alloys was first reported in 1932 by Bradley and Jay. Since then, much effort has been put into understanding the order-disorder transformation in different systems, particularly in the Fe-Al, Fe-Si and Fe-Al-Si systems as the typical case of order-disorder transitions. Two ordered structures with stoichiometric compositions- Fe (Al-Si) and Fe3(Al-Si), can be formed from the bcc phase alloys and these structures exist over a wide range of composition and temperature. The existence of the ordered phases 1 (Fe3Al and Fe3Si which have D03 or BiF3 type order) and phase 2 (Fe-Al and Fe-Si which have B2 or Cs-Cl type order) along the Fe3Al-Fe3Si section was studied by means of various techniques in order to understand the nature and the existence of this transitions such as high temperature X-ray diffraction and recording the disappearance of D03 superlattice and reflections as a function of temperature and composition. Further works have been carried out in this field and led to the understanding of these type of transitions.

Biography:

Boulouma Amor is an assistant professor at the ESTI (French abbreviation of College of industrial technologies) of Annaba (Algeria) since 2006, has completed his PhD on “Arc melted Fe-Si-Al alloys’’ in 2018 from the University of Annaba (Algeria) and became an associate professor there. He has two published papers about Al-Fe- Si alloys and made over 15 contributions in international conferences on different themes such as Synthesis of advanced materials from Al-Fe-Si and Si-C alloys by arc melting and mechanical alloying; Mechanical and magnetic properties of Fe- Si-Al sendust alloys; Synthesis of composite materials from Al-Fe2O3 reactions, etc.

E-mail: bouloumaa@gmail.com

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