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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
*
[email protected]
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Abstract

Rapidly solidified Al–12.5 Si–1 Ni ribbons were prepared bymelt spinning. The Si solid solubility was extended to high values asdeduced from X-ray diffraction and TEM. This high solubility of Si wasfound to have significant effects on the various properties of this alloy.High values of electric resistivity was observed which was about four timesthe fully annealed values. Furthermore rapid solidification improved thetensile strength and the toughness of this alloy as compared with itsclassically solidified counter part. The relaxation kinetics was followedby isothermal resistivity measurements. The relaxation follows an equationwhich has the Johnson-Mehl-Avrami (JMA) form. No metastable phase wasobserved.

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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