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Interrelations between fracture toughness and other mechanical properties in titanium alloys

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Abstract

Critical stress intensity factors and general tensile properties were measured for a class of metastable beta and alpha-beta titanium alloys with a limited number of compositions but processed to have a wide variety of strength levels and microstructures. These data were used to test thirteen theoretical relations between the fracture toughness and tensile parameters. Many of the theoretical relations had been proposed previously, but several new forms were derived in the present work. The correlation showed that for alloys exhibiting a limited range of microstructures, the simpler correlations gave the better fits withK Ic α γ−1specifically being the best one. For correlations of alloys with a wide range of microstructures, more complex correlations which included microstructural parameters were found to be superior.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, The Ohio State University, 43210, Columbus, OH

    J. P. Hirth (Professor)

  2. Colt Industries/Crucible Materials Research Center, 15230, Pittsburgh, PA

    F. H. Froes (Manager of Titanium Research)

Authors
  1. J. P. Hirth
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  2. F. H. Froes
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Hirth, J.P., Froes, F.H. Interrelations between fracture toughness and other mechanical properties in titanium alloys. Metall Trans A 8, 1165–1176 (1977). https://doi.org/10.1007/BF02667402

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