Dependence of the strain energies on grain orientations in HCP metal films |
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Authors: | Jian-Min Zhang Yan Zhang Vincent Ji |
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Institution: | a College of Physics and Information Technology, Shaanxi Normal University, Xian 710062, Shaanxi, PR China b State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049, Shaanxi, PR China c LIM UMR 8006 ENSAM, 151 bd. de L’Hôpital, 75013 Paris, France |
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Abstract: | A thin polycrystalline film bonded tightly to a thick substrate of different thermal expansion coefficients will experience thermal strain when the temperature is changed. Calculations of the strain energies for grains having various crystallographic orientations (h k l) relative to the film surface were made for a polycrystalline film composed of the close-packed hexagonal (HCP) metal Be, Cd, Co, Hf, Mg, Re, Ru, Sc, Ti, Y, Zr and Zn, respectively. From strain energy minimization, the (0 0 1), (0 1 3), (0 4 5), (1 2 3), (2 5 8), (0 5 7), (0 3 5), (0 5 7), (0 1 0), (5 5 8), (1 4 7) and (0 0 1) textures should be favorable in Be, Cd, Co, Hf, Mg, Re, Ru, Sc, Ti, Y, Zr and Zn film, respectively. |
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Keywords: | 65 40 -b 65 40 De 68 35 Gy 81 40 Jj |
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