The effect of Cu addition on the formation of f.c.c.-Al phase in rapidly quenched Al-Y-Ni alloys

Jerzy Latuch , A. Kokoszkiewicz , H. Matyja

Abstract

The structure and microhardness of amorphous and nanocrystalline melt-spun Al88Y3Ni9 − xCux (x = 0, 2, 4, 6 at.\%) alloys were examined. Variation of cooling rate controlled by the rotational wheel speed (15–60 s−1) resulted in the formation of ductile nano-composite material (x = 2, 4) composed of nanoscale f.c.c.-Al particles embedded in an amorphous matrix. The effect of replacement of Ni by Cu on structural and mechanical properties was studied. This replacement extended the temperature region in which the Al phase precipitates, causing a decrease in particle size from 50 (x = 0) to 10 nm (x = 4). The volume fraction of the nanoscale particles and lattice parameter of Al phase were calculated. Due to the nanoscale Al particles, a significant increase in microhardness compared with the amorphous single phase was observed.
Author Jerzy Latuch (FMSE / DCFM)
Jerzy Latuch,,
- Division of Construction and Functional Materials
, A. Kokoszkiewicz
A. Kokoszkiewicz,,
-
, H. Matyja
H. Matyja,,
-
Journal seriesMaterials Science and Engineering A-Structural Materials Properties Microstructure And Processing, ISSN 0921-5093
Issue year1997
Vol226–228
No0
Pages809-812
Keywords in EnglishAluminium-yttrium-nickel-copper alloys, microhardness, Nanoscale f.c.c.-Al particles, rapid solidification
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 3104 Condensed Matter Physics; 2500 General Materials Science
DOIDOI:10.1016/S0921-5093(97)80084-6
URL http://www.sciencedirect.com/science/article/pii/S0921509397800846
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 17; Scopus Citations = 19; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 1.072; WoS Impact Factor: 2006 = 1.49 (2) - 2007=1.931 (5)
Citation count*11 (2014-08-27)
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