Cyclic hardening and substructure of AlMg alloys

N. M. Grinberg, V. A. Serdyuk, A. M. Gavrilyako, D. V. Lychagin, E. V. Kozlov

    Research output: Contribution to journalArticle

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    Abstract

    The dislocation substructure and macroscopic regularities of cyclic hardening of aluminium alloy AMg6 are studied in the low and high cycle fatigue regions. The density of dislocations and dislocation loops as well as the microhardnesses of the surface and the near-surface layer are measured as functions of the strain amplitude, the number of cycles, the environment and the temperature. It is found that, as the number of cycles increases, the quantitative evolution of the initial dislocation substructure occurs mainly in the near-surface layer and the cyclic hardening develops in two (the high amplitude region) or three (the low amplitude region) stages. The importance of each structural component is estimated in relation to hardening in these regions. On the basis of our results and reports (on alloys with lower contents of magnesium) in the literature the effects of the stacking fault energy upon the substructures due to cyclic hardening of AlMg alloys are analysed in a wide range of magnesium contents (0-6.5 at.%) together with the difference between the substructures of these alloys and those of pure f.c.c. metals under similar conditions.

    Original languageEnglish
    Pages (from-to)49-61
    Number of pages13
    JournalMaterials Science and Engineering A
    Volume138
    Issue number1
    DOIs
    Publication statusPublished - 30 May 1991

    Fingerprint

    substructures
    hardening
    Hardening
    Magnesium
    cycles
    magnesium
    surface layers
    stacking fault energy
    Stacking faults
    regularity
    aluminum alloys
    Microhardness
    microhardness
    Aluminum alloys
    Metals
    Fatigue of materials
    metals
    Temperature
    temperature

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Grinberg, N. M., Serdyuk, V. A., Gavrilyako, A. M., Lychagin, D. V., & Kozlov, E. V. (1991). Cyclic hardening and substructure of AlMg alloys. Materials Science and Engineering A, 138(1), 49-61. https://doi.org/10.1016/0921-5093(91)90675-D

    Cyclic hardening and substructure of AlMg alloys. / Grinberg, N. M.; Serdyuk, V. A.; Gavrilyako, A. M.; Lychagin, D. V.; Kozlov, E. V.

    In: Materials Science and Engineering A, Vol. 138, No. 1, 30.05.1991, p. 49-61.

    Research output: Contribution to journalArticle

    Grinberg, NM, Serdyuk, VA, Gavrilyako, AM, Lychagin, DV & Kozlov, EV 1991, 'Cyclic hardening and substructure of AlMg alloys', Materials Science and Engineering A, vol. 138, no. 1, pp. 49-61. https://doi.org/10.1016/0921-5093(91)90675-D
    Grinberg NM, Serdyuk VA, Gavrilyako AM, Lychagin DV, Kozlov EV. Cyclic hardening and substructure of AlMg alloys. Materials Science and Engineering A. 1991 May 30;138(1):49-61. https://doi.org/10.1016/0921-5093(91)90675-D
    Grinberg, N. M. ; Serdyuk, V. A. ; Gavrilyako, A. M. ; Lychagin, D. V. ; Kozlov, E. V. / Cyclic hardening and substructure of AlMg alloys. In: Materials Science and Engineering A. 1991 ; Vol. 138, No. 1. pp. 49-61.
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