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Compositional Effects on Grain Boundary Dislocation Stability in Pure Aluminum and Aluminum Alloys

Published online by Cambridge University Press:  10 February 2011

S. G. Song ,
J. S. Vetrano  and
S. M. Bruemmer
S. G. Song
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, sg_song@pnl.gov
J. S. Vetrano
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, sg_song@pnl.gov
S. M. Bruemmer
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, sg_song@pnl.gov
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Abstract

The dissociation of extrinsic grain boundary dislocations in Al, Al-Mg and Al-Mg-Sn alloys was studied at various temperatures to examine the compositional effect on the dissociation process. It was found that both alloying elements (Mg and Sn) hinder the dissociation, however the effect of Sn is more significant even at a very low concentration due in part to grain boundary segregation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 458: Symposium W – Interfacial Engineering for Optimized Properties , 1996 , 237
Copyright
Copyright © Materials Research Society 1997

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References

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