Structure and mechanical properties of an AlCr.sub.6./sub.Fe.sub.2./sub.Ti.sub.1./sub. alloy produced by rapid solidification powder metallurgy method

0342539 - FZÚ 2011 RIV DE eng J - Journal Article
Michalcová, A. - Vojtěch, D. - Novák, P. - Šittner, Petr - Pilch, Jan - Drahokoupil, Jan - Kolařík, K.
Structure and mechanical properties of an AlCr₆Fe₂Ti₁ alloy produced by rapid solidification powder metallurgy method.
International Journal of Materials Research. Roč. 101, č. 2 (2010), 307-309. ISSN 1862-5282. E-ISSN 2195-8556
R&D Projects: GA AV ČR(CZ) IAA200100627; GA AV ČR KAN300100801
Institutional research plan: CEZ:AV0Z10100520
Keywords : aluminium * rapid solidification * hot-extrusion
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.860, year: 2010

Structure and properties of a Al–Cr–Fe–Ti alloy produced by powder metallurgy are described. An initial rapidly solidified powder alloy was prepared by the pressure nitrogen melt atomisation. Subsequently, the granulometric powder fraction of less than 45 lm was hot-extruded. According to X-ray diffraction and transmission electron microscopy observation, the compact material is composed of a-Al grains and spheroids of intermetallic phases. The a-Al grains of the compacted material are recrystallized and neither residual stress nor texture were observed. The values of ultimate tensile strength and yield strength of the investigated material were similar to the values for conventional Al-based alloys. Dependences of ultimate tensile strength and yield strength on temperature were also measured.
Permanent Link: http://hdl.handle.net/11104/0185252