Issue |
Eur. Phys. J. AP
Volume 4, Number 2, November 1998
|
|
---|---|---|
Page(s) | 117 - 124 | |
DOI | https://doi.org/10.1051/epjap:1998250 | |
Published online | 15 November 1998 |
https://doi.org/10.1051/epjap:1998250
Properties of rapidly solidified Al–12.5 Si–1Ni alloy
Solid State Physics Department, National Research
Centre, Dokki, Giza, Egypt
Corresponding author: bastawros@frcu.eun.eg
Received:
16
May
1997
Revised:
9
June
1998
Accepted:
9
June
1998
Published online: 15 November 1998
Rapidly solidified Al–12.5 Si–1 Ni ribbons were prepared by melt spinning. The Si solid solubility was extended to high values as deduced from X-ray diffraction and TEM. This high solubility of Si was found to have significant effects on the various properties of this alloy. High values of electric resistivity was observed which was about four times the fully annealed values. Furthermore rapid solidification improved the tensile strength and the toughness of this alloy as compared with its classically solidified counter part. The relaxation kinetics was followed by isothermal resistivity measurements. The relaxation follows an equation which has the Johnson-Mehl-Avrami (JMA) form. No metastable phase was observed.
PACS: 81.20.-n – Methods of materials synthesis and materials processing / 81.30.Fb – Solidification / 81.40.Cd – Solid solution hardening, precipitation hardening, and dispersion hardening; aging
© EDP Sciences, 1998
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