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Preliminary Indications of a Slight Improvement in the Ductility of Ni3Ge With Boron

Published online by Cambridge University Press:  26 February 2011

J. Fang  and
E. M. Schulson
J. Fang
Affiliation:
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755
E. M. Schulson
Affiliation:
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755
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Abstract

Preliminary work was conducted to investigate whether 0.1 at% boron affects the ductility of Ni-rich Ni3Ge (Ni-23.5 at%Ge). Cracks were observed in the unmodified alloy around hardness indentations and on fresh surfaces upon abrasive cutting. No cracks appeared in the modified alloy. Also, SEM fractographs showed that with the boron addition the morphology changed from pure intergranular fracture to a mixture of intergranular and transgranular fracture, albeit predominantly intergranular. Tensile tests indicated that the boron addition slightly improves the ductility of Ni-rich Ni3 Ge.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 751
Copyright
Copyright © Materials Research Society 1991

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References

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