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On the stability of Ni3Ge

Published online by Cambridge University Press:  31 January 2011

A. K. Jena  and
M. C. Chaturvedi
A. K. Jena
Affiliation:
Department of Metallurgical Engineering, Indian Institute of Technology, Kanpur, India
M. C. Chaturvedi
Affiliation:
Department of Mechanical Engineering, University of Manitoba, Winnipeg, Canada R3T 2N2
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Abstract

Ni3Ge-containing nickel-germanium alloys with 12.10 to 16.8 at. % Ge were investigated. Nickel-saturated Ni3Ge had a lattice parameter of 3.57015 × 10−10 m and contained 22.5 at. % Ge over the temperature range 650 to 1100 °C. However, the precipitates in the initial stages contained 24.44 at. % Ge and were almost cubic in shape. The strengthening effects of Ni3Ge were appreciable. In alloys containing higher percentages of germanium, precipitates were observed in as-quenched specimens. The hardness after quenching was high and did not change appreciably with time. Hardness was reduced in the presence of aluminum.

Type
Articles
Information
Journal of Materials Research , Volume 4 , Issue 6 , December 1989 , pp. 1417 - 1420
Copyright
Copyright © Materials Research Society 1989

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References

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