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Postprocessing effect on the ductility and flexural behavior of three titanium alloys under simulated superplastic forming conditions

  • Superplastic Forming
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Abstract

Ductility of three titanium alloys was evaluated after exposure to time and temperature conditions representative of superplastic forming (SPF). Following exposure, flexural specimens were postprocessed to remove the α-case by one of three methods: no material removed, the standard amount of material removed by chemical processing, or a reduced amount of material removed also by chemical processing. Results include the evaluation of the specimens per ASTM E 290-97a and AMS-T 9046, springback analysis, and prediction of minimum bend radius criteria for the three alloys from finite element method simulation. It was found that results varied based on alloy and exposure temperature and the reduced postprocessing of titanium SPF parts produced acceptable results under certain conditions.

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Authors and Affiliations

  1. The Boeing Company, Box 3707, 98124, Seattle, WA

    F. Pitt

  2. Department of Mechanical Engineering, University of Washington, Box 352600, 98195, Seattle, WA

    M. Ramulu, P. Labossiere & S. Young

Authors
  1. F. Pitt
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  2. M. Ramulu
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  3. P. Labossiere
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  4. S. Young
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Pitt, F., Ramulu, M., Labossiere, P. et al. Postprocessing effect on the ductility and flexural behavior of three titanium alloys under simulated superplastic forming conditions. J. of Materi Eng and Perform 13, 735–743 (2004). https://doi.org/10.1361/10599490421565

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  • DOI: https://doi.org/10.1361/10599490421565

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