The Effect of Crystallographic Orientation on The Mechanical Properties of a single Crystal NiAl+Fe Alloy

Abstract

In this study, the room temperature tensile properties of a single crystal NiAl alloy were investigated as a function of orientation. Fifteen crystallographic orientations were tested, including the <001>, <110> and <111>. The tensile properties measured include yield strength, plastic strain to failure, and ultimate tensile strength. Room temperature ductility as high as 1.4% was measured as close as 10° from the <001> orientation.

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Acknowledgements

The authors would like to acknowledge Air Force Wright Laboratory and Naval Air Warfare Center Aircraft Division Trenton for funding this investigation through contract F33615-90-C-2006. We are also thankful to Jim Nickely, Jim Jackman, Gary McCabe, Mike Agnello and Bill Davis for their assistance in preparing the specimens and to Joe Wilson (Thread Rite Tool) for machining the specimens and Mike Huber (Mar-Test Inc.) for testing.

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Lahrman, D.F., Field, R.D. & Darolia, R. The Effect of Crystallographic Orientation on The Mechanical Properties of a single Crystal NiAl+Fe Alloy. MRS Online Proceedings Library 288, 679–684 (1992). https://doi.org/10.1557/PROC-288-679

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