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Integrated Rapid Solidification and Heat Treatment using Computerized Electron Beam Processing

Published online by Cambridge University Press:  26 February 2011

Atsushi Iwata ,
Anjum Tauqir  and
Peter R. Strutt
Atsushi Iwata
Affiliation:
Dept. of Metallurgy, University of Connecticut, Storrs, Connecticut 06268
Anjum Tauqir
Affiliation:
Dept. of Metallurgy, University of Connecticut, Storrs, Connecticut 06268
Peter R. Strutt
Affiliation:
Dept. of Metallurgy, University of Connecticut, Storrs, Connecticut 06268
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Abstract

Martensitic refinement is observed in rapidly solidified high speed steel (M7) by introducing a short ‘thermal arrest’ during cooling. This is accomplished using microcomputer controlled electron beam deflection for the generation of preselectcd scanning patterns. Such a tcchnique provides a high degree of control over short-duration heating at high temperatures and thus facilitates the use of fast reaction rate kinetics. By programming a ‘thermal arrest’ in the austenite range it has been found possible to obtain a distribution of fine carbides within the solidification cells. These carbides, it was found, result in refinement of the martensitic structure.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 80: Symposium G – Science and Technology of Rapidly Quenched Alloys , 1986 , 239
Copyright
Copyright © Materials Research Society 1987

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References

1. Tauqir, A., Ph. D. dissertation, University of Connecticut, 1986.Google Scholar
2. Tauqir, A., Klemens, P.G., Strutt, P. R., submitted to J. Appl. Physics on 10/8-1986.Google Scholar
3. Carslaw, H. S. and Jaeger, J. C., ‘Conduction of heat in solids’, Oxford University Press, 1959.Google Scholar
4. Kim, Y. W., Strutt, P. R., Nowotny, H., Met. Trans., 10A, (1979), 881.Google Scholar
5. Strutt, P. R., Lewis, B. G., and Kurup, M., ‘Electron- Beam Glazing of Iron-Base Materials’, Annual report 1981, ONR Contract N00014-78-C-0580.Google Scholar