Abstract
Nickel aluminides with the following compositions (at.%) have been developed: Ni—18±2% Al—8±2% Cr—1.0±0.8% Zr (orHf)—0.15±0.1% B. These aluminides possess superb mechanical and metallurgical properties and have potential to be used as new structural materials at elevated temperatures. This paper discusses the behavior of nickel aluminides and updates progress in developing methods of fabrication. Additional studies are expected to lead to optimum alloy compositions to further improve the creep resistance of the aluminides, particularly in wrought conditions.
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Additional information
Author’s Note: This research was sponsored by the Office of Energy Utilization Research, Energy Conversion and Utilization Technologies (ECUT) Program, U.S. Department of Energy under Contract No. DE-ACO5-84OR21400 with Martin Marietta Energy Systems, Inc.
C.T. Liu and V.K. Sikka are currently with Oak Ridge National Laboratory in Oak Ridge, Tennessee.
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Liu, C.T., Sikka, V.K. Nickel Aluminides for Structural Use. JOM 38, 19–21 (1986). https://doi.org/10.1007/BF03257837
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DOI: https://doi.org/10.1007/BF03257837