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Synthesis of CORONA 5 (Ti-4.5Al-5Mo-1.5Cr)

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Summary

The synthesis of CORONA 5 (Ti-4.5Al-5Mo-1.5Cr) is described from the viewpoints of alloy chemistry and microstructure. Lenticular alpha is shown to maximize fracture resistance parameters, while a globular alpha optimizes hightemperature flow characteristics. The processing and application of CORONA 5 as forging, plate, sheet and powder metallurgy products are presented. The weldability of the alloy is described and potential use of the alloy for engine applications discussed. The improved mechanical property behavior over the “workhorse” Ti-6Al-4V alloy combined with cost-effective production should result in use of CORONA 5 in many applications. Future developments for CORONA 5 are suggested both in terms of further mechanical property optimization and in light of the economics of producing the alloy.

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References

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Authors and Affiliations

  1. Materials Laboratory, AFWAL Wright-Patterson Air Force Base, Ohio

    F. H. Froes

  2. Naval Air Systems Command, Washington, D.C.

    W. T. Highberger

Authors
  1. F. H. Froes
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  2. W. T. Highberger
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Froes, F.H., Highberger, W.T. Synthesis of CORONA 5 (Ti-4.5Al-5Mo-1.5Cr). JOM 32, 57–64 (1980). https://doi.org/10.1007/BF03354573

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