Thermal evolution of nanoquasicrystalline Al93Fe3Cr2Ti2 alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:434

Article; Proceedings Paper

Garcia Escorial, A. ; Cremaschi, V. F. ; Natale, E. ; Lieblich, M.

关键词: nanostructured materials;    quasicrystals;    powder metallurgy;    microstructure;    X-ray diffraction;   

DOI  :  10.1016/j.jallcom.2006.08.211

来源: Elsevier

【 摘 要 】

In this work, thermal evolution of bulk nanoquasicrystalline Al93Fe3Cr2Ti2 material, obtained by consolidation of nanoquasicrystalline powder particles, is studied. The powder particles were obtained by gas atomization and the consolidation of the powders was achieved via warm extrusion [1,2]. The evolution of the microstructure during processing as well as with further thermal treatments was investigated. The consolidated material contains spherical particles of an icosahedral i-phase of around 200 nm in diameter. The quasicrystalline phase is detected even after 1 h at 500 degrees C, and afterwards, it evolves through a metastable Al6Fe phase to the equilibrium phases. (C) 2006 Elsevier B.V. All rights reserved.

【 授权许可】

Free