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Electron Beam Glazing of Hardfacing Alloys

Published online by Cambridge University Press:  21 February 2011

M. Kurup ,
A. Tauqir ,
P. R. Strutt  and
B. H. Kear
M. Kurup
Affiliation:
University of Connecticut, Storrs, CT 06268
A. Tauqir
Affiliation:
University of Connecticut, Storrs, CT 06268
P. R. Strutt
Affiliation:
University of Connecticut, Storrs, CT 06268
B. H. Kear
Affiliation:
Exxon Research and Engineering Company, Annandale, NJ 08801
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Abstract

Electron beam glazing has been used to reprocess hardfacing deposits of conventional Stellite 6 alloy, and TiC, TiB2 particle strengthened Stellite 6. By varying the scanning mode and power density, a wide variety of microstructures have been developed, with significant increases in hardness. Single-pass line source scanning produces a distribution of moderately sized carbides (2–5μm) in a dendritic matrix, whereas multi-pass processing gives a more homogeneous refined microstructure with submicron carbides. Point source scanning, in contrast, produces the most refined microstructures. Effective control of the carbide distribution, including both fine and coarse carbides, may be the key to tailoring the microstructure for specific wear applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 93
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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