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Properties of rapidly solidifiedAl–12.5 Si–1Ni alloy

Published online by Cambridge University Press:  15 November 1998

N. L. Tawfik ,
E. M. Abdel Hady  and
A. M. Bastawros
N. L. Tawfik*
Affiliation:
Solid State Physics Department, National Research Centre, Dokki, Giza, Egypt
E. M. Abdel Hady
Affiliation:
Solid State Physics Department, National Research Centre, Dokki, Giza, Egypt
A. M. Bastawros
Affiliation:
Solid State Physics Department, National Research Centre, Dokki, Giza, Egypt
*
bastawros@frcu.eun.eg
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Abstract

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.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 4 , Issue 2 , November 1998 , pp. 117 - 124
Copyright
© EDP Sciences, 1998

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