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Title: Hall-petch relationship in an Al-Mg-Sc alloy subjected to ECAP
Authors: Dubyna, A.
Mogucheva, A.
Kaibyshev, R.
Keywords: technique
metal science
aluminum alloys
equal channel angular pressing
mechanical properties
ultrafine grained microstructure
Issue Date: 2014
Citation: Dubyna, A. Hall-petch relationship in an Al-Mg-Sc alloy subjected to ECAP / A. Dubyna, A. Mogucheva, R. Kaibyshev // Advanced Materials Research. - 2014. - Vol.922.-P. 120-125.
Abstract: Effect of extensive grain refinement on mechanical properties of an Al-Mg-Sc alloy subjected to equal-channel angular pressing (ECAP) at 300°C is considered in detail. It was shown that the Hall-Petch relationship with the coefficient, ky, of 0.2 MPa×m1/2 is valid in a wide strain range despite a great difference in deformation structures. Volume fraction of fine grains with an average size of ~1 μm gradually increases with strain. It is caused by the fact that additive contributions of grain size strengthening and dislocation strengthening to the overall strengthening take place in this alloy. Upon ECAP the extensive grain refinement is accompanied by increasing dislocation density
Appears in Collections:Статьи из периодических изданий и сборников (на иностранных языках) = Articles from periodicals and collections (in foreign languages)

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