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Transmission Electron Microscopy of RSP Fe/Cr/Mn/Mo/C Alloy

Published online by Cambridge University Press:  15 February 2011

J. J. Rayment  and
G. Thomas
J. J. Rayment
Affiliation:
Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720
G. Thomas
Affiliation:
Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720
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Abstract

Rapid solidification processing (RSP) has been carried out on an Fe/Cr/Mn/Mo/C alloy using both electron-beam melting and piston-and-anvil techniques. Preliminary TEM results show RSP produces a refined duplex microstructure of ferrite and martensite, with a typical ferrite grain size of 0.50–3.0 microns. This RSP microstructure is significantly different from that observed in the conventionally austenitized and quenched alloys—a lath martensitic microstructure with thin films of retained interlath austenite. The morphological change produced by RSP is accompanied by an increase in hardness from 48Rc to 61Rc (^ 480 to 720 VHN). It is intended to use electron-beam specimens to examine the potential beneficial effect of RSP upon sliding wear resistance and, by careful TEM studies, it will be possible to characterize the microstructure and its role in the hardness and wear behavior of the RSP alloy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 8 , 1981 , 547
Copyright
Copyright © Materials Research Society 1982

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References

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