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具有六方结构的金属板材呈现较强的物理和力学性能各向异性 ,尤其是钛及其合金呈现的弹性各向异性 ,其轧向与横向的弹性模量差异较大。根据Bunge等人的三维取向分布函数 (ODF) ,由单晶弹性系数和少量有限的织构系数如直至四阶的C系数 ,简便地计算了低对称六方结构的板材的弹性。钛及其合金板材弹性的理论计算结果与实测数值相吻合 ,钛合金板材的弹性各向异性是由织构产生的 ,具有 { 1 2 1 5}〈1 0 1 0〉织构的钛板材的横向弹性模量为 1 1 6GPa,大于轧向的弹性模量 (1 0 8GPa)
The hexagonal plate has a strong physical and mechanical anisotropy, especially the elastic anisotropy of titanium and its alloys, and the difference between the rolling direction and the transverse elastic modulus is large. According to the Bunge et al.’s Three-Dimensional Orientation Distribution Function (ODF), the elasticity of a plate of a low-symmetric hexagonal structure is simply calculated from a single-crystal elastic coefficient and a small amount of finite texture coefficients up to fourth-order C coefficients. The theoretical calculation results of the elastic properties of titanium and its alloy sheet are consistent with the measured values. The elastic anisotropy of the titanium alloy sheet is produced by texturing and has the texture of {1 2 1 5} <1 0 1 0> Transverse elastic modulus of 1 1 6GPa, greater than the elastic modulus of rolling (1 0 8GPa)