Multi-step wrought processing of TiAl-based alloys

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Description

Wrought processing will likely be needed for fabrication of a variety of TiAl-based alloy structural components. Laboratory and development work has usually relied on one-step forging to produce test material. Attempts to scale-up TiAl-based alloy processing has indicated that multi-step wrought processing is necessary. The purpose of this study was to examine potential multi-step processing routes, such as two-step isothermal forging and extrusion + isothermal forging. The effects of processing (I/M versus P/M), intermediate recrystallization heat treatments and processing route on the tensile and creep properties of Ti-48Al-2Nb-2Cr alloys were examined. The results of the testing were then compared to ... continued below

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13 p.

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Fuchs, G. E. April 1, 1997.

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  • Knolls Atomic Power Laboratory
    Publisher Info: Knolls Atomic Power Lab., Schenectady, NY (United States)
    Place of Publication: Schenectady, New York

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Description

Wrought processing will likely be needed for fabrication of a variety of TiAl-based alloy structural components. Laboratory and development work has usually relied on one-step forging to produce test material. Attempts to scale-up TiAl-based alloy processing has indicated that multi-step wrought processing is necessary. The purpose of this study was to examine potential multi-step processing routes, such as two-step isothermal forging and extrusion + isothermal forging. The effects of processing (I/M versus P/M), intermediate recrystallization heat treatments and processing route on the tensile and creep properties of Ti-48Al-2Nb-2Cr alloys were examined. The results of the testing were then compared to samples from the same heats of materials processed by one-step routes. Finally, by evaluating the effect of processing on microstructure and properties, optimized and potentially lower cost processing routes could be identified.

Physical Description

13 p.

Notes

INIS; OSTI as DE99001891

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  • 4. international conference on high-temperature intermetallics, San Diego, CA (United States), 27 Apr - 1 May 1997

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  • Other: DE99001891
  • Report No.: KAPL-P--000166
  • Report No.: K--97049;CONF-970455--
  • Grant Number: AC12-76SN00052
  • DOI: 10.2172/319830 | External Link
  • Office of Scientific & Technical Information Report Number: 319830
  • Archival Resource Key: ark:/67531/metadc678509

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Creation Date

  • April 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 16, 2016, 6:28 p.m.

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Fuchs, G. E. Multi-step wrought processing of TiAl-based alloys, report, April 1, 1997; Schenectady, New York. (digital.library.unt.edu/ark:/67531/metadc678509/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.