Abstract In the article, plates of commercial alloy 3003 were processed by Incremental Equal Channel Angular Pressing (I-ECAP). A microstructural evaluation revealed that it was possible to obtain a high fraction of high-angle grain boundaries, exceeding 63%, and an average grain size of 0.5 μm. Tensile testing revealed that the material has low ductility, but high mechanical strength, 120% higher than that of the initial material. Plate formability was described using the Lankford parameter and evaluated based on the crystallographic texture. It was concluded that the mean anisotropy was almost identical to that of the initial material, but planar anisotropy was reduced almost to 0. This was explained on the basis of the crystallographic texture. It appears that I-ECAP processed plates have qualities that could make them suitable for further processing by means of metal forming methods.

中文翻译：

---

Incremental ECAP加工超细晶Al Mn方板的显微组织、拉伸性能和成形性

摘要 在文章中，商业合金 3003 板材采用增量等通道角冲压 (I-ECAP) 进行加工。显微组织评估表明，可以获得高比例的大角度晶界，超过 63%，平均晶粒尺寸为 0.5 μm。拉伸试验表明，该材料延展性低，但机械强度高，比初始材料高 120%。板的成形性使用 Lankford 参数进行描述，并根据晶体结构进行评估。得出的结论是平均各向异性与初始材料的平均各向异性几乎相同，但平面各向异性几乎降至 0。这是基于晶体结构的解释。