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Creep of AK4-1 alloy under complex loading

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Journal of Applied Mechanics and Technical Physics Aims and scope

Abstract

The article discusses several approaches [1–3] to a description of creep under complex loading, making it possible to take account of the anisotropic character of the hardening of a material with not fully developed creep. An attempt is made to take account of the different behavior of a material with increasing and decreasing stresses. The results of predictions made using various theories are compared with experimental data from investigations of the creep of AK4-1 alloy under the combined action of elongation and torsion, under conditions of nonproportional stepwise loading. Comparison with experiment shows that, under complex loading, a theory based on the hypothesis of isotropic hardening does not describe the experimental data satisfactorily. Considerably better results are given by theories which take account of the anisotropic character of the hardening of materials with not fully established creep.

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Literature cited

  1. O. V. Sosnin, “The creep of hardened materials,” Inzh. Zh., Mekhan. Tverd. Tela, No. 3 (1968).

  2. G. M. Khazhinskii, “Rheological equations for a medium with anisotropic, hardening,” Izv. Vuzov, Mashinostroenie, No. 3 (1968).

  3. N. N. Malinin and G. M. Khazhinskii, “The construction of a theory of creep with anisotropic hardening,” Izv. Akad. Nauk SSSR, Mekhan. Tverd. Tela, No. 3 (1969).

  4. V. P. Ermakov and A. I. Ravikovich, “Creep of a heat-hardened aluminum alloy under a complex state of stress,” Zh. Prikl. Mekhan. i Tekh. Fiz., No. 2 (1971).

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Authors and Affiliations

  1. Novosibirsk

    A. I. Ravikovich

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  1. A. I. Ravikovich
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Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 3, pp. 138–142, May–June, 1973.

The author thanks L. M. Kurshin for his interest in the work and for his aid.

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Ravikovich, A.I. Creep of AK4-1 alloy under complex loading. J Appl Mech Tech Phys 14, 411–414 (1973). https://doi.org/10.1007/BF00850959

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  • DOI: https://doi.org/10.1007/BF00850959

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