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首页> 外文会议>The 3rd International Symposium on Material Chemistry in Nuclear Environment (Material Chemistry '02 MC'02) Mar 13-15, 2002 Tsukuba >FABRICATION OF Ni_3Al THIN FOILS BY COLD ROLLING AND THE MECHANICAL PROPERTIES
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FABRICATION OF Ni_3Al THIN FOILS BY COLD ROLLING AND THE MECHANICAL PROPERTIES

机译：冷轧Ni_3Al薄膜的制备及其力学性能。

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摘要

Thin foils of boron-free stoichiometric Ni_3Al below 100 μm in thickness were fabricated by cold rolling of the sheets which were sectioned from directionally solidified ingots. Two types of deformation microstructure associated with fine slip traces and coarse, wavy shear bands were observed in the foils, depending on the initial rolling direction. In the case of near <112> rolling direction, the microstructure was rather homogeneous associated with a single {110} texture. In the case of near <001> rolling direction, the microstructure consisted of repeated double bands with differently oriented slip traces, having two different {110} textures. Both type of the cold-rolled foils had very high fracture strength, 1.7～1.9 GPa, as a result of heavy cold reduction. They showed bending ductility but no tensile ductility. No significant difference in the mechanical properties was observed between the two deformation microstructures.
机译：通过将薄板冷轧制成薄薄的无硼化学计量的Ni_3Al薄箔，该薄箔是从定向凝固的铸锭上切下的，厚度小于100μm。根据初始轧制方向，在箔片中观察到两种类型的变形微观结构，分别与细的滑动轨迹和粗糙的波浪状剪切带相关。在接近<112>的轧制方向的情况下，微观结构相当均匀，并且具有单一的{110}织构。在接近<001>轧制方向的情况下，微观结构由具有不同取向滑移轨迹的重复双带组成，具有两个不同的{110}纹理。由于大量冷轧，两种冷轧箔的断裂强度都很高，为1.7〜1.9 GPa。它们表现出弯曲延展性，但是没有拉伸延展性。在两个变形微结构之间没有观察到机械性能的显着差异。

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