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首页> 外文期刊>Crystal Research and Technology: Journal of Experimental and Industrial Crystallography >Texture gradient studies of a Cu-tube by the robot at STRESS-SPEC
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Texture gradient studies of a Cu-tube by the robot at STRESS-SPEC

机译：STRESS-SPEC上的机器人对铜管的纹理梯度研究

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The handling of larger samples for texture studies is limited when we using the Eulerian cradle. The robot St?ubli RX160 installed at STRESS-SPEC offers much more freedom in sample manipulation on one hand to perform pole figure scanning and on the other hand to position the sample for a texture mapping. A key problem is that slit systems cannot be positioned close to large samples due to safety reasons which makes corrections more important. A very simple solution was tested to correct the scattered intensity for each pole figure point for constant volume and anisotropic absorption. A simple method to make these corrections is needed because engineering samples such as semi-finished products have a large variety of shapes and weights and an ideal slit system is only seldomly available. The test sample was a Cu-tube of 140 mm in diameter with an average wall thickness of 10 mm. To compare the corrections three kind of samples were measured, first a cube of 10 × 10 × 11 mm3 without any correction, second an 11 mm long tube segment and third a tube segment of 250 mm (12 kg weight) in length. Orientation Distribution Function (ODF) analysis of the average texture over the tube wall by the iterative series expansion method has shown that sufficient intensity corrections can be done to describe the texture gradient around the circumference of the Cu-tube related to low ovality and eccentricity of the Cu-tube.
机译：当我们使用欧拉架时，用于纹理研究的较大样品的处理受到限制。安装在STRESS-SPEC上的机器人St？ubli RX160一方面提供了更大的自由度，以便进行极图扫描，另一方面可以对样品进行纹理映射，从而可以进行样品操作。一个关键问题是，由于安全原因，裂隙系统无法放置在靠近大样本的地方，这使得校正更加重要。测试了一个非常简单的解决方案，以针对恒定体积和各向异性吸收校正每个极图点的散射强度。需要一种简单的方法来进行校正，因为工程样品（例如半成品）具有多种形状和重量，并且很少有理想的狭缝系统。测试样品是直径为140 mm的Cu管，平均壁厚为10 mm。为了比较校正结果，对三种样品进行了测量，首先是没有任何校正的10×10×11 mm3的立方体，第二是长11 mm的管段，第三是长250 mm（重12 kg）的管段。通过迭代级数展开法对管壁上的平均纹理进行定向分布函数（ODF）分析，结果表明，可以进行足够的强度校正来描述与低椭圆度和偏心率有关的Cu管周围的纹理梯度。铜管。

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