含有不同尺度量级第二相的高强铝合金 关键字: 铝合金；多级第二相；拉伸延性；模型[gap=1216]Key words: aluminum alloys；second phase particles of various sizes；tensile ductility；model
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In addition, a significant reduction of the tensile ductility of the material was observed.
另外我们观察到拉伸塑性的急剧降低。
Tensile ductility of lamellar microstructure is higher than that of equiaxed one at 20 K. Its deformation process consists of twinning and slipping.
低温下粗大的片状组织比等轴组织具有更高的拉伸延性，且合金的变形是由孪生变形和滑移变形共同作用的结果。
The results show that the hot-rolled and directionally solidified processes improve the mechanical properties of the alloy and particularly its tensile ductility at room temperature.
结果表明，热轧和定向凝固结晶工艺明显改善了合金性能，特别是提高了合金室温塑性。
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