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 journal › Article

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 language	English
Pages (from-to)	49-61
Number of pages	13
Journal	Materials Science and Engineering A
Volume	138
Issue number	1
DOIs	https://doi.org/10.1016/0921-5093(91)90675-D
Publication status	Published - 30 May 1991

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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 journal › Article

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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10.1016/0921-5093(91)90675-D