Abstract
The metal injection molding process, used in the automotive, medical, and consumer markets for several decades, was investigated for application to superalloys for small, complex-shaped, aerospace components. With sufficient control on processing, inclusion risks, and chemistry, the process can successfully be applied to superalloy 718 components. Assessments included tensile and fatigue property evaluation, characterization of microstructure, and development of an AMS specification.
Keywords
Ni3Nb Metal Injection Molding Plastic Injection Molding Aerospace Component Structural Aerospace ApplicationNotes
Acknowledgements
The authors would like to acknowledge funding support from USAF and GE Aviation for this work, which was performed under the US Air Force Metals Affordability Initiative Project “Low Cost Metal Injection Molding Technology”, Contract # FA8650-07-2-5209 in collaboration with team members Honeywell, Boeing, and PCC-AFT. The authors would also like to thank PCC-AFT for component and process images.
References
- 1.R. Schmees, J. Spirko, and J. Valencia, 5th International Conference on Advanced Particulate Materials and Processes, West Palm Beach Florida, April 7–9, 1997, pp. 493–499.Google Scholar
- 2.R. German, Int. J. Powder Metall. 46, 11 (2010).Google Scholar
- 3.G.A. Rao, M. Srinivas, and S. Sarme, Mater. Sci. Eng. A 418, 282 (2006).CrossRefGoogle Scholar
- 4.G.A. Rao, M. Srinivas, and S. Sarme, Mater. Sci. Eng. A 435–436, 84 (2006).Google Scholar
- 5.K. Hajmrle and R. Angers, Int. J. Powder Metall. Powder Technol. 15, 319 (1979).Google Scholar