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Control of microstructure and component shape in rapidly solidified/powder metallurgy titanium alloys

  • International Conference On Recent Advances In Materials And Processes
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Abstract

Extensive use of titanium rapidly solidified/powder metallurgy (RS/PM) components requires not only careful control of the microstructure for optimum mechanical properties but also cost-effective processing. A new direct reduction process for production of titanium alloy powder will be presented. Control of the microstructure in conventional alloys such as Ti-6Al-4V and in non-conventional dispersion strengthened terminal and intermetallic alloys will be discussed. It will be shown that RS/PM processing allows production of a fine grain size and useful dispersions of rare earth and metalloid phases; phases which normally form as gross undesirable particles. The use of hydrogen as a temporary alloying element, thermochemical processing, will be discussed and it will be demonstrated how this treatment can lead to refined microstructures with enhanced mechanical behaviour. Cost-effective processing using near-net shape techniques such as the ceramic mold process, rapid omnidirectional compaction (ROC), and the use of RS/PM preforms for subsequent isothermal forging will be presented. Microstructural control and shape-making used in unison should lead to increased use of titanium components in advanced aerospace systems.

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Authors and Affiliations

  1. Wright Research and Development Centre, Materials Laboratory, AFWAL/MLLS, Wright-Patterson AFB, 45433-6533, OH, USA

    F H Froes

  2. Graduate Materials Engineering, KL407, University of Dayton, 45469-0001, Dayton, OH, USA

    D Eylon

  3. General Electric Company, Corporate Research and Development Centre, Bldg. K-1, 263 MB, P.O. Box 8, 12301-0008, Schenectady, NY, USA

    R G Rowe

  4. Crucible Materials Corporation, Crucible Research Center, P.O. Box 88, 15230-0088, Pittsburgh, PA, USA

    C F Yolton

Authors
  1. F H Froes
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  2. D Eylon
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  3. R G Rowe
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  4. C F Yolton
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work done as a consultant to Metcut-Materials Research Group

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Froes, F.H., Eylon, D., Rowe, R.G. et al. Control of microstructure and component shape in rapidly solidified/powder metallurgy titanium alloys. Bull. Mater. Sci. 12, 293–311 (1989). https://doi.org/10.1007/BF02747138

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  • DOI: https://doi.org/10.1007/BF02747138

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