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Fatigue Resistance of Powder Metallurgy Ti–6Al–4V Alloy

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Abstract

Fatigue-resistance characteristics of Ti–6Al–4V alloy synthesized by the simplest powder metallurgy method involving the processes of pressing and sintering of blended elemental titanium hydride-based powders were studied. Powder materials have a relatively fine-grain β-phase, which despite the presence of residual pores, makes for quite a high fatigue limit (500 MPa) comparable to that of the corresponding cast alloys. Fatigue cracks in the powder alloys are initiated from such stress raisers as major pores open to the surface of the specimen gauge length. Along with a significant decrease in the production costs of titanium alloys and articles of them, the use of this method provides obtaining materials with satisfactory static and dynamic mechanical characteristics suitable for practical applications.

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Authors and Affiliations

  1. Kurdyumov Institute of Physics of Metals, National Academy of Sciences of Ukraine, Kiev, Ukraine

    V. I. Bondarchuk & D. G. Savvakin

  2. Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine

    O. N. Gerasimchuk & B. A. Gryaznov

Authors
  1. O. M. Ivasishin
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  2. K. A. Bondareva
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  3. V. I. Bondarchuk
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  4. O. N. Gerasimchuk
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  5. D. G. Savvakin
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  6. B. A. Gryaznov
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Ivasishin, O.M., Bondareva, K.A., Bondarchuk, V.I. et al. Fatigue Resistance of Powder Metallurgy Ti–6Al–4V Alloy. Strength of Materials 36, 225–230 (2004). https://doi.org/10.1023/B:STOM.0000035756.11562.c3

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  • DOI: https://doi.org/10.1023/B:STOM.0000035756.11562.c3

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