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Solid Solution Hardening of Intermetallic Compounds

Published online by Cambridge University Press:  01 January 1992

Robert L. Fleischer
Robert L. Fleischer*
Affiliation:
Rensselaer Polytechnic Institute, Troy, NY 12180-3590 (formerly General Electric Research & Development Center, Schenectady, NY 12301)
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Abstract

Solid solution hardening is sought and observed in two B2(cP2) CsCl and two C15(cF24) Cu2Mg type structures. New data are presented for the high-temperature compounds AlCo, AlRu, and Cr2Zr; prior data of Livingston on Cu2Mg are analyzed. From lattice parameters and specific gravities, cell occupancy numbers have been measured and used to infer likely defect types and concentrations. The effects of constitutional defects in binary compounds correlate with traditional substitutional solution hardening from elastic interactions due to size differences and modulus differences. The hardening from ternary solutes is similar in magnitude, but the defect structures are complicated and not yet adequately understood.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 165
Copyright
Copyright © Materials Research Society 1995

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References

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