A metallurgical investigation of two turbosupercharger discs of 19-9DL alloy

E. E. Reynolds, J. W. Freeman, A. E. White
naca-tn-1535
Nov 1948


Two turbosupercharger discs of 19-9DL alloy were included in a general investigation to determine the properties of this material in forgings of the size actually used in service. The two discs were given hot-cold-working treatments at 1300 to 1350 degrees F. They differed only in that one was solution-treated while the other was left in the as-forged condition prior to the hot-cold working.

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