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Interface Structure and Slip Transmission in TI-49AL-3NB

Published online by Cambridge University Press:  15 February 2011

Daniel S. Schwartz  and
S. M. L. Sastry
Daniel S. Schwartz
Affiliation:
McDonnell Douglas Research Laboratories, Box 516, St. Louis, MO 63166-0516
S. M. L. Sastry
Affiliation:
McDonnell Douglas Research Laboratories, Box 516, St. Louis, MO 63166-0516
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Abstract

Two types of special grain boundaries were examined in Ti-49Al-3Nb deformed at elevated temperatures. The first can be described as a Σ=2 order-changing boundary. This boundary is faceted and results from the nucleation and growth of variants of the γ phase from the parent α phase. The second type of grain boundary is a γ/α2 interphase boundary, and transmission of slip through this type of boundary was examined. Slip transmission from γ into α2 did not produce distinct slip bands in α2,. Slip transmission from γ through α2, and into the next γ lamella was possible even when the next γ lamella was in an orientation rotated relative to the first γ lamella.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 229: Symposium Q – Structure/Property Relationships for Metal/Metal Interfaces , 1991 , 207
Copyright
Copyright © Materials Research Society 1991

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References

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