2013
DOI: 10.1016/j.jallcom.2013.07.075
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The influence of chromium on the structure and superplasticity of Al–Mg–Mn alloys

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Cited by 39 publications
(15 citation statements)
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“…The final grain size decreased from 15 to 5 µm, thereby increasing both yield stress due to Hall–Petch strengthening, and elongation to failure of ~30%, compared to sheets processed with hot rolling. Comparatively large strain at both 200 and 400 °C can intensively refine the secondary precipitates (dispersoids) that were observed in prior studies [73,74,75,76,77,78,79,80]. The fine grain structure observed after thermomechanical treatment, including IMF, can be the result of both the effect of stimulation nucleation by grain boundaries at recrystallization and the stronger Zener drag force.…”
Section: Discussionmentioning
confidence: 75%
“…The final grain size decreased from 15 to 5 µm, thereby increasing both yield stress due to Hall–Petch strengthening, and elongation to failure of ~30%, compared to sheets processed with hot rolling. Comparatively large strain at both 200 and 400 °C can intensively refine the secondary precipitates (dispersoids) that were observed in prior studies [73,74,75,76,77,78,79,80]. The fine grain structure observed after thermomechanical treatment, including IMF, can be the result of both the effect of stimulation nucleation by grain boundaries at recrystallization and the stronger Zener drag force.…”
Section: Discussionmentioning
confidence: 75%
“…In novel alloys, the additions of Sc, as an expensive element, are reduced to 0.1 wt.%, while that of Zr is retained in a higher amount, 0.2 wt.% [ 32 , 49 , 50 ]. The bimodal distribution of the particles in the alloy’s structure provides a high strain rate superplasticity with strain rate sensitivity coefficient m above 0.3 for the AA5XXX- [ 24 , 30 , 51 ], AA7XXX- [ 29 , 30 , 42 , 52 ] and AA2XXX-types [ 27 , 34 ] alloys containing eutectic- and dispersoid-forming Fe [ 24 ], Ni [ 24 , 27 , 29 , 52 ], Ce [ 25 , 27 , 53 ], Y [ 34 ], Er [ 51 ], Mn [ 54 , 55 ], Cr [ 55 ], Zr [ 30 , 56 , 57 ], Sc [ 58 , 59 , 60 , 61 ]. The influence of the eutectic-forming and dispersoid-forming elements on the grain structure and superplastic deformation behavior of Al-Mg-Si type alloys is poorly studied.…”
Section: Introductionmentioning
confidence: 99%
“…The AlMg6 alloy belongs to the group of non-heattreatable aluminum alloys of the Al-Mg system. [24][25][26][27][28] The AlMg6 alloy (aluminum alloy 1560 according to GOST 4787-97) incorporates the highest content of magnesium (5.8À6.8 wt %), and it is the highest strength alloy among the alloys of the Al-Mg system. The AMg6 alloy has relatively low strength characteristics in comparison with heat-treatable aluminum alloys; however, unlike the latter, it has good weldability, high ductility and corrosion resistance, especially in marine atmosphere.…”
Section: Introductionmentioning
confidence: 99%