(北京有色金屬研究總院，北京100088)
摘 要: 具有六方結(jié)構(gòu)的金屬板材呈現(xiàn)較強(qiáng)的物理和力學(xué)性能各向異性，尤其是鈦及其合金呈現(xiàn)的彈性各向異性，其軋向與橫向的彈性模量差異較大。根據(jù)Bunge等人的三維取向分布函數(shù)(ODF)，由單晶彈性系數(shù)和少量有限的織構(gòu)系數(shù)如直至四階的C系數(shù)，簡(jiǎn)便地計(jì)算了低對(duì)稱六方結(jié)構(gòu)的板材的彈性。鈦及其合金板材彈性的理論計(jì)算結(jié)果與實(shí)測(cè)數(shù)值相吻合，鈦合金板材的彈性各向異性是由織構(gòu)產(chǎn)生的，具有{12(-1)5}<10(-1)0> 織構(gòu)的鈦板材的橫向彈性模量為116GPa，大于軋向的彈性模量(108GPa)。
關(guān)鍵字: 六方金屬板材；彈性；織構(gòu)；極圖；ODF
（General Research Institute for Nonferrous Metals, Beijing 100088 , P.R.China）
Abstract:The presence of texture was known to cause anisotropy of elastic properties of polycrystalline materials with a hexagonal structure. By using texture coefficients and elastic constant of single crystal, the elastic property of polycrystalline plate can be calculated. The present calculation method has been applied to predicting elastic modulus for a rolled titanium sheet and the results are consistent well with experimental ones.
Key words: hexagonal metallic plate; elasticity; texture; pole figure; ODFs
