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Effects of hydrogen on the hydride transformation in Ti-24Al-11Nb alloys

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Abstract

The effect of hydrogen on phase transformation in Ti-24Al-11 Nb alloys has been studied by means of an X-ray technique. The quantitative X-ray method is aimed at the analysis of the hydride distribution in thin surface layers comparable to the penetration depth of X-rays. In Ti-24Al-11 Nb alloys cathodically charged with hydrogen, transformation of AlTi3 is probably due to AlTi3-H, and depends on the particular hydrogen distribution in the specimen. The fraction of AlTi3-H drops from about 70% on the surface to zero at a depth of approximately 2 μm for samples which were charged for 24 h and aged for 4 h. The weight fraction of the AlTi3-H hydride in the surface decreased to about 64% after a long period of ageing (7 days). Cathodic charging with hydrogen induced cracking.

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Author notes

  1. P. Rozenak

    Present address: , Eshel 44, 84965, Omer, Israel

Authors and Affiliations

  1. Department of Materials Engineering, Ben-Gurion University of the Negev, 84105, Beer-Sheva, Israel

    P. Rozenak & M. Dangur

Authors
  1. P. Rozenak
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  2. M. Dangur
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Rozenak, P., Dangur, M. Effects of hydrogen on the hydride transformation in Ti-24Al-11Nb alloys. J Mater Sci 27, 2273–2278 (1992). https://doi.org/10.1007/BF01105032

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  • DOI: https://doi.org/10.1007/BF01105032

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