| 用取向分布函数研究铜及铜锌合金的变形非均匀性 |
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| 引用本文： | 张新明,J.Hirsch,K.Lücke. 用取向分布函数研究铜及铜锌合金的变形非均匀性[J]. 中南大学学报(自然科学版), 1988, 0(2) |
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| 作者姓名： | 张新明 J.Hirsch K.Lücke |
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| 作者单位： | 中南工业大学，西德(王亚)琛工业大学，西德(王亚)琛工业大学 |
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| 摘 要： | 本文用三维取向分布函数研究了不同轧制变形程度、不同变形温度条件下铜及铜锌合金的显微结构非均匀性:显微带,机械孪生(孪生)和剪切带;并分析了其形成过程及对织构的影响。它们是金属不均匀变形的结果。显微带、铜型剪切带对织构的变化影响不大;孪生对织构的转变起关键作用;黄铜型剪切帝对织构的变化起重要作用。解释了不同条件下的金属变形机理。论述了孪生后的两种不同变形方式。
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| 关 键 词： | 铜 铜锌合金 显微组织(金相学) 均匀变形 分布函数 取向 剪切带 机械孪生 轧制 形变织构 堆垛层错 电子显微镜分析/取向分布函数 黄铜型剪切带 非均匀性 |
INVESTIGATION OF THE DEFORMATION INHOMOGENEITIES IN Cu AND Cu-Zn ALLOYS WITH ORIENTATION DISTRIBUTION FUNCTION |
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| Abstract: | The microstructural inhomogeneities,such as microbands,twinning and shearbands in Cu and Cu-Zn alloys at different rolling reductions and rollingtemperatures,have been studied with three-dimensional orientation distributionfunction.The deformation processes and their contributions to the rolling textureshave also been analyzed.They result from inhomogeneous deformation of metals.The formation of microbands and copper-type shear bands causes no severe texturechange.Twinning,however,is responsible for the transit of texture type.Theformation of brass-type shear bands has a strong influence on textures.The activedeformation mechanisms under various conditions are reported and two kinds ofdeformation mode for the twinned crystals are described. |
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| Keywords: | copper copper zinc alloys micro-structure(metallography) homo geneous deformation distribution function orientation shear zone mechanical twinning rolling deformation textures stacking faults electron-microscope analysis/orientation |
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