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Mechanical properties and cold-brittleness threshold of vanadium

  • Refractory Metals and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Tensile strength tests at different temperatures of smooth and notched samples with given strength and ductile characteristics do not reveal the critical embrittlement temperature of vanadium.

    Static and impact bending tests made it possible to determine the susceptibility to brittle fracture of vanadium of differing purity.

  2. 2.

    Interstitial impurities (nitrogen and oxygen) substantially increase the strength and lower the ductility. Substitution impurities (aluminum, silicon, and iron) have less effect on these characteristics.

  3. 3.

    Interstitial impurities raise the cold-brittleness threshold. A change in the concentration of these elements by only 0.3 at. % raises the cold-brittleness threshold more than 200\dgC.

  4. 4.

    The impact toughness of vanadium of differing purity in the completely ductile condition (i.e., above the cold-brittleness threshold) is almost identical. The difference in the impact toughness of vanadium is due mainly to the difference in the values of the cold-brittleness threshold.

  5. 5.

    The cold-brittleness threshold determined from static bending tests is 40\2-50\dgC below that determined from impact tests.

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Literature cited

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Authors
  1. L. P. Vorob'eva
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  2. A. P. Gulyaev
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  3. I. P. Druzhinina
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Additional information

State Rare Metals Research Institute, Moscow Institute of Chemical Machine Construction. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 56–62, January, 1970.

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Vorob'eva, L.P., Gulyaev, A.P. & Druzhinina, I.P. Mechanical properties and cold-brittleness threshold of vanadium. Met Sci Heat Treat 12, 53–58 (1970). https://doi.org/10.1007/BF00651715

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  • DOI: https://doi.org/10.1007/BF00651715

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