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本研究采用织构分析的三维取向分布函数法(ODF)研究了Cu-Zn-A1形状记忆合金的织构与弹性各向异性。研究结果表明:1.两相Cu-Zn-Al合金板材β-相的构与钢板相似,它在欧拉空间系由A-管和B-管纤维织构组成的;而α-相的织构与冷轧黄铜板的织构相似。2.板材表面与内部的织构具有一定的差别,对于β-相的织构,这种差异明显;而对于α-相的织构只是强弱之差。3.弹性模量随与轧向偏离的角度而变,对于具有β-相的板材,在与轧向45°方向的板材的弹性模量呈极小值,这与β-相合金具有较大的弹性各向异性因子有关,但对于α-相弹性模量随角度的变化不明显。该合金具有较大的弹性各向异性有利于马氏体相变。
In this study, texture and elastic anisotropy of Cu-Zn-Al shape memory alloy were investigated by three-dimensional orientation distribution function (ODF) method. The results show that: 1. The β-phase structure of the two-phase Cu-Zn-Al alloy sheet is similar to that of the steel sheet, and it is composed of A- and B-tube fiber textures in the Eulerian space. The α-phase texture is similar to the cold-rolled brass The texture of the board is similar. 2. There is a certain difference between the surface of the sheet and the texture of the interior, which is obvious for the texture of the β-phase; however, the texture of the α-phase is only the difference between strength and weakness. 3. The modulus of elasticity changes with the angle of deviation from the rolling direction. For the sheet material with β-phase, the elastic modulus of the sheet material in the direction of rolling at 45 ° has a minimum value, which is greater than that of the β-phase alloy Anisotropy factors, but the α-phase elastic modulus with the angle change is not obvious. The alloy has a large elastic anisotropy conducive to martensitic transformation.