(中南大學(xué) 材料科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 運(yùn)用取向分布函數(shù)（ODF）研究了每個(gè)軋制道次的剪切變形特征對(duì)高純鋁箔軋制織構(gòu)的影響。提出用中性角的相對(duì)大小來(lái)量化軋制剪切變形作用方向改變的位置， 運(yùn)用Taylor晶體塑性變形理論模擬計(jì)算了中性角的相對(duì)大小對(duì)軋制織構(gòu)演變的影響。實(shí)測(cè)與模擬的軋制織構(gòu)特征表明： 中性角靠近軋制變形區(qū)的中心位置有利于形成{001}〈110〉剪切織構(gòu)， 從而證實(shí)了除剪切變形的程度外， 剪切變形方向改變的位置也是影響高純鋁箔軋制織構(gòu)的重要因素。
關(guān)鍵字: 電容器； 高純鋁箔； 軋制織構(gòu)； 中性角； 剪切變形； 織構(gòu)模擬
CHEN Zhi-yong, ZHOU Zhuo-ping
（School of Materials Science and Engineering,
Central South University, Changsha 410083, China）
Abstract: Effect of direction change of shear deformation on the rolling textures in high purity Al foils was investigated by orientation distribution function (ODF). The quantitative estimation of relative neutral angle was suggested and introduced into the Taylor-type crystal plasticity deformation model to simulate the rolling textures. It is shown that the condition of neutral angle locating at the middle point of rolling deformation zone favors the development of the {001}〈110〉 shear texture whatever the measured and the simulated ODFs are, which leads to the conclusion that the evolution of rolling textures is contributed by the parameter of relative neutral angle except the magnitude of shear deformation.
Key words: electrolytic capacitors; high purity Al foils; rolling textures; neutral angle; shear deformation; texture molding
