Effect of scandium on superplasticity of Al-Mg alloys
摘要
The superplastic behavior of adding 0.22%Sc into the Al-6Mg alloy was studied by simple superplastic pretreatment process—warm rolling and cold rolling. The optimum superplastic temperature and strain rate of the alloys were defined and satisfactory results were obtained during the superplastic deformation at 811 K and initial strain rate 0=1.67×10-3 s-1. The average elongation of Al-6Mg-0.22Sc alloys reaches to 1 125%, and the maximum elongation is 1 200%, maximum m value (strain rate sensitive index) is 0.879. But under the same condition the elongation and maximum m value for Al-6Mg alloy were only 377% and 0.595, respectively. The superplastic deforming mechanism for Al-6Mg-0.22Sc alloys was also discussed.
引用本文（GB/T 7714）
孝云祯, 高彩茹, 马宏声, 等. Effect of scandium on superplasticity of Al-Mg alloys[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2001.
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