Abstract Twin boundaries can enhance the strength and preserve the ductility of a variety of metallic materials with face centered cubic structures. However, twin boundaries are rare in aluminum due to its high stacking fault energy. There are limited successes for the formation of nanotwins in Al. Here, we show that twin morphology and twin density in Al can be altered by tailoring the textures of films. Transmission Kikuchi diffraction and transmission electron microscopy studies on (111), (110) and (112) textured Al films indicate that Al (112) film has the highest twin density. Two design criteria are identified for the introduction of a high density of growth twins into Al.

中文翻译：

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具有高堆垛层错能的铝中织构定向孪晶形成倾向

摘要 双晶界可以提高各种具有面心立方结构的金属材料的强度并保持其延展性。然而，由于铝的高堆垛层错能，双晶界在铝中很少见。在铝中形成纳米孪晶的成功有限。在这里，我们表明可以通过调整薄膜的纹理来改变 Al 中的孪晶形态和孪晶密度。对（111）、（110）和（112）织构铝膜的透射菊池衍射和透射电子显微镜研究表明，铝（112）膜具有最高的孪晶密度。确定了将高密度生长孪晶引入铝中的两个设计标准。