Abstract
The advantages of a P/M process for Ni-based superalloys are shown in terms of better homogeneity than cast alloys. By using low interstitial-atomized powders densified by direct extrusion, superplastic structures are developed. The results of a thermo-mechanical process are presented through which large grained or even single crystal structures can be fabricated. Finally, an alloy series made specifically for P/M processes is presented. These alloys have no carbon as atomized, densified or formed. The resultant solution-annealed grain sizes are ASTM 1 to 0. These alloys are subsequently carburized to stabilize the grain boundaries.
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References
S. H. Reichman and J. W. Smythe, Superplasticity in P/M IN-100 Alloy, International Journal of Powder Metallurgy, 6, 1, 1970, p. 65.
S. H. Reichman, B. W. Castledine and J. W. Smythe, Superalloy P/M Components for Elevated Temperature Applications, Society of Automotive Engineers, 700140, January, 1970.
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© 1971 Metal Powder Industries Federation
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Reichman, S.H., Smythe, J.W. (1971). New Developments in Superalloy Powders. In: Hausner, H.H. (eds) Modern Developments in Powder Metallurgy. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8963-1_5
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DOI: https://doi.org/10.1007/978-1-4615-8963-1_5
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-8965-5
Online ISBN: 978-1-4615-8963-1
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