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Loading Rate Effects and Fracture in a Tial Alloy

Published online by Cambridge University Press:  01 January 1992

Madan G. Mendiratta ,
Young-Won Kim  and
Dennis M. Dimiduk
Young-Won Kim
Affiliation:
UES. Inc., 4401 Dayton-Xenia Road, Dayton, OH 45432
Dennis M. Dimiduk
Affiliation:
Materials Directorate, WL/MLLM, Wright-Patterson AFB, OH 45433
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Abstract

The room-temperature fracture toughness and tensile properties were evaluated as a function of loading rate, on a fully lamellar and nearly lamellar γ titanium aluminide alloy. The fully lamellar microstructure exhibited increasing toughness with increasing loading rate, however, all other mechanical property data indicated insensitivity to the loading rate. The fracture processes were dominated by translamellar, Mode I separation, and exhibited a process zone consisting of parallel slip traces/twins leading to formation of microcracks.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 543
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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