A simple theory for the development of inhomogeneous rolling textures
A simple theory for the development of inhomogeneous rolling textures
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DOI：
10.1007/bf02851357
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发表时间：
1991-11
期刊：
影响因子：
--
通讯作者：
C. Lee;B. Duggan
中科院分区：
文献类型：
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作者：
C. Lee;B. Duggan
高度简化的模型被用来描述在轧制间隙的应变场，允许位置相关的剪切应变被引入到平面应变场。剪切应变所产生的表面摩擦也可以建模，由此产生的组合张量描述允许轧制纹理计算全约束泰勒理论。这种结合摩擦和轧制区几何形状的描述成功地预测了条件下，不同的表面纹理预计会出现，沿着与深度相关的影响，在面心立方（fcc）金属和合金。具有低堆垛层错能（SFE）的金属和合金的情况只能通过将变形孪晶以及滑移包括到织构形成过程中来从理论成功地预测。该理论的一个自然的结果是，剪切分量纳入轧制几何导致纹理锐化率降低。
A highly simplified model is used to describe the strain field in the rolling gap which allows location-dependent shear strains to be introduced into the plane strain field. Shear strains arising from surface friction can also be modeled, and the resultant combined tensor description permits rolling textures to be calculated by full-constraints Taylor theory. This combined friction and rolling zone geometry description successfully predicts the conditions under which distinct surface textures are expected to arise, along with depth-dependent effects in face-centered cubic (fcc) metals and alloys. The case of metals and alloys with low stacking fault energy (SFE) can only be successfully predicted from the theory by including deformation twinning, as well as slip, into the process of texture formation. A natural consequence of the theory is that the inclusion of shear components into the rolling geometry leads to a reduced rate of texture sharpening.