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Effect of carbon on the brittleness of molybdenum-rhenium alloys

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

Conclusions

  1. 1.

    The ductile-to-brittle transition temperature of Mo+47% Re is considerably lower than that of molybdenum with the same carbon content. With 0.11% C the transition temperature of Mo+47% is −196 to −60°C, while that of molybdenum is −20 to +80°C.

  2. 2.

    The alloy of Mo +47%+0.13 C is ductile at room temperature, and a strip 0.5 mm thick was produced from it.

  3. 3.

    The high ductility of Mo +47% Re as compared with pure molybdenum (the so-called “rhenium effect’) is due to the higher solubility of carbon in molybdehum alloyed with rhenium. (The solubility of carbon is five times higher in this alloy.) This leads to a smaller amount and smaller size of carbide particles. Additions of rhenium also have a favorable effect on the composition of the carbides, their shape and distribution, and also exert a modifying influence.

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Literature cited

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Authors
  1. E. M. Savitskii
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  2. L. Z. Konieva
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  3. M. A. Tylkina
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  4. N. N. Morgunova
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Additional information

A. A. Baikov Institute of Metallurgy. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 17–21, January, 1972.

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Savitskii, E.M., Konieva, L.Z., Tylkina, M.A. et al. Effect of carbon on the brittleness of molybdenum-rhenium alloys. Met Sci Heat Treat 14, 17–21 (1972). https://doi.org/10.1007/BF00658339

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  • DOI: https://doi.org/10.1007/BF00658339

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