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Plastic Deformation of A Rapidly Solidified Al-Li-Zr Alloy

Published online by Cambridge University Press:  25 February 2011

N. J. Kim  and
S. K. Das
N. J. Kim
Affiliation:
Allied Corporation, Metals and Ceramics Laboratory, Corporate R&D P.O. Box 1021R, Morristown, New Jersey 07960
S. K. Das
Affiliation:
Allied Corporation, Metals and Ceramics Laboratory, Corporate R&D P.O. Box 1021R, Morristown, New Jersey 07960
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Abstract

The deformation behavior of a rapidly solidified Al-3.7%Li-O.5%Zr alloy has been investigated using transmission electron microscopy. Aging of the alloy in a conventional manner produces a homogeneous precipitation of δ' with small amount of heterogeneously distributed composite precipitates. The deformation behavior of the alloy in such aging conditions is dominated by the readily shearable δ', resulting in a pronounced planar slip. A homogeneous distrubution of composite precipitates promoted by double-aging treatment, however, alters the deformation mode to wavy slip by inducing the by-passing of dislocations around the shear resistant composite precipitates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 58 , 1985 , 281
Copyright
Copyright © Materials Research Society 1986

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References

REFERENCES

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