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On the Macroscopic Flow Behavior of the Phases Present in Ti-24Al-llNb

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Abstract

The deformation behavior of two alloys whose compositions (Ti-25Al-9Nb and Ti-11Al-23Nb in at.%) correspond to alpha-two and beta phases in the Ti-24Al-11Nb alloy has been investigated. Results from both compression and tensile tests over a range of temperatures from 27° to 650°C indicate that the yield stress as well as the strain and strain-rate hardening characteristics of the Ti-24-11 alloy are controlled by the Ti3Al-base alpha-two phase. In contrast to the Alpha-two alloy, the Beta alloy has a flow stress which is very sensitive to temperature and strain rate at 650°C, suggesting the onset of high temperature creep processes.

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Authors and Affiliations

  1. General Electric Company, 1 Neumann Way, M89, 45215, Cincinnati, OH, USA

    S. J. Giths

  2. Department of Materials Science and Engineering, The Pennsylvania State University, 16802, University Park, PA, USA

    D. A. Koss

Authors
  1. S. J. Giths
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  2. D. A. Koss
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Giths, S.J., Koss, D.A. On the Macroscopic Flow Behavior of the Phases Present in Ti-24Al-llNb. MRS Online Proceedings Library 133, 323 (1988). https://doi.org/10.1557/PROC-133-323

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  • DOI: https://doi.org/10.1557/PROC-133-323

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