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Fatigue Crack Growth Characterstics and Fracture Toughness of ψ-TiAl Base Alloy Sheet Material

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Abstract

Room temperature tension-tension fatigue crack growth experiments were perfomed on single edge notch specimens of Ti-48Al-2Cr sheet materials produced on industrial scale with different microstructures ranging from near gamma to fully lamellar. Crack extension was monitored using a travelling optical microscope and a DC potential method. Crack paths and fracture surfaces were investigated by SEM. Fracture toughness data were determined by monotonie loading of previously fatigued samples.

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Authors and Affiliations

  1. Max-Planck-Institut für Metallforschung, Seestrasse 92, D-70174, Stuttgart, Germany

    R. Behr & A. Wanner

  2. Plansee AG, Technology Center, A-6600, Reutte, Austria

    H. Clemens & W. Glatz

Authors
  1. R. Behr
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  2. A. Wanner
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  3. H. Clemens
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  4. W. Glatz
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Behr, R., Wanner, A., Clemens, H. et al. Fatigue Crack Growth Characterstics and Fracture Toughness of ψ-TiAl Base Alloy Sheet Material. MRS Online Proceedings Library 364, 781–786 (1994). https://doi.org/10.1557/PROC-364-781

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  • DOI: https://doi.org/10.1557/PROC-364-781

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