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Hot Isostatic Consolidation of P/M Superalloys

Published online by Cambridge University Press:  21 February 2011

R.D. Kissinger ,
S.V. Nair  and
J.K. Tien
R.D. Kissinger
Affiliation:
Henry Krumb School of Mines, Columbia University, New York, NY 10027.
S.V. Nair
Affiliation:
Henry Krumb School of Mines, Columbia University, New York, NY 10027.
J.K. Tien
Affiliation:
Henry Krumb School of Mines, Columbia University, New York, NY 10027.
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Abstract

The kinetics of powder consolidation, or densification, and the powder morphological changes ocurring during hot isostatic pressing (HIP) are studied as a function of particle size distribution and hold time at HIP temperature for the nickel base superalloy RENE-95. In order to understand the extent of individual powder particle deformation during consolidation and its effect on subsequent prior particle boundaries (PPB), particle size distribution was studied as a variable. Particle size distributions studied include monosized (75–90 um), bimodal ( 75–90 um and 33–35 um) and commercial (<104 um) size distributions. The experimental results of HIP densification kinetics are compared with a newly developed analytical deformation mechanism model for HIP consolidaiton which takes into account the effect of a distribution of particle sizes on the kinetics of densification.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 157
Copyright
Copyright © Materials Research Society 1984

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References

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