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Notch Effects on Room Temperature Tensile and Bend Properties of Ni3Al and Ni3Al+B

Published online by Cambridge University Press:  26 February 2011

P. S. Khadkikar ,
J. D. Rigney ,
J. J. Lewandowski  and
K. Vedula
P. S. Khadkikar
Affiliation:
Department of Materials Science and Engineering Case Western Reserve University Cleveland, Ohio 44106
J. D. Rigney
Affiliation:
Department of Materials Science and Engineering Case Western Reserve University Cleveland, Ohio 44106
J. J. Lewandowski
Affiliation:
Department of Materials Science and Engineering Case Western Reserve University Cleveland, Ohio 44106
K. Vedula
Affiliation:
Department of Materials Science and Engineering Case Western Reserve University Cleveland, Ohio 44106
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Abstract

The notched mechanical properties of Ni3AI and Ni3Al+B prepared by powder metallurgy techniques have been determined in both tension and bending at room temperature. Ten- sile tests performed using double notched specimens containing relatively blunt notches produced intergranular fracture in both Ni3Al and Ni3AI+B, with evidence of fracture initiating in an intergranular manner ahead of the blunt notch in both cases. Estimates of notched fracture toughness from bend tests and of local grain boundary fracture stress from the notched tensile tests suggest an increase in these values with boron addition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 523
Copyright
Copyright © Materials Research Society 1989

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References

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