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X-ray Scattering by Dislocations in Crystals. 1. General Theory and Applicationto Screw Dislocations

机译：晶体中位错的X射线散射。 1.螺旋位错的一般理论和应用

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Line profiling of x-ray Bragg peaks has great potential for extracting meaningfulphysical parameters from work-hardened single-crystal samples; these include both dislocation densities and ordering lengths. However, a detailed reading of the existing literature uncovered severe shortcomings in the required theoretical understanding of scattering from dislocations. The authors present a mathematically rigorous theoretical framework for understanding dislocation scattering; the procedure is based upon first principles of kinematic scattering and basic laws of probability theory. These results are then applied to the specific case of parallel screw dislocations. As expected from experimental measurements, the solution to this problem is neither Gaussian nor Lorentzian, but is 'intermediate' between these distributions. Detailed computer simulations of the scattering are carried out and compared to the theoretical predictions. The predictions beautifully match the computer simulations with no adjustable parameters. Comparisons are also made to the work of previous authors.

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作者
Levine, L. E.; Thomson, R.;
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年度 1996
页码 p.1-31
总页数 31
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Dislocations; Crystals; Screw dislocations; Density; Patterning; Line profiling; Work hardening; X-ray scattering;

机译：位错;晶体;螺旋位错;密度;图案化;线条轮廓;加工硬化; X射线散射;

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1. Direct determination of dislocation sense of closed-core threading screw dislocations using synchrotron white beam x-ray topography in 4H silicon carbide [J] . Yi Chen, Michael Dudley Applied Physics Letters . 2007,第14期

机译：在4H碳化硅中使用同步加速器白束X射线形貌直接确定闭芯螺纹螺钉错位的位错感
2. X-ray topographic dislocation contrast visible in reflections orthogonal to the Burgers vectors of axial screw dislocations in hexagonal silicon carbide [J] . Vetter WM., Dudley M. Journal of Applied Crystallography . 2001,第1期

机译：六角形碳化硅中与轴向螺杆位错的Burgers向量正交的反射中可见的X射线形貌位错对比
3. A screw dislocation in a functionally graded material using the translation gauge theory of dislocations [J] . Lazar M. International Journal of Solids and Structures . 2011,第11a12期

机译：使用位移规平移理论的功能梯度材料中的螺丝位错
4. Elementary screw and mixed-type dislocations in 4H-SiC characterized by X-ray topography taken with six equivalent 11–28 g-vectors and a comparison to etch pit evaluation [C] . Y. Yao, Y. Ishikawa, Y. Sugawara, 2016 European Conference on Silicon Carbide amp; Related Materials . 2016

机译：4H-SiC中的基本螺钉和混合型位错，其特征是使用六个等效的11–28 g向量对X射线形貌进行了表征，并与蚀刻坑评估进行了比较
5. Measurement of dislocation velocities and mobile dislocation densities as a function of strain and strain rate in cadmium single crystals. [D] . Robson, Mark Todhunter. 2003

机译：镉单晶中位错速度和移动位错密度的测量与应变和应变率的关系。
6. C1–C2 pedicle screw fixation for adolescent with os odontoideum associated atlantoaxial dislocation and a compound reduction technique for irreducible atlantoaxial dislocation [O] . Jia Liu, Ling-Jun Zhu, En-Ze Jiang, 2019

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7. A screw dislocation in a functionally graded material using the translation gauge theory of dislocations [O] . Lazar Markus 2011

机译：使用位移规平移理论的功能梯度材料中的螺丝位错
8. Dislocation Barrier Interactions in Cubic Crystals. Volume I. The Interaction of Dislocations in Anisotropic Face-Centered Cubic Crystals. (Study of the Theory of Fracture Phenomena) [R] . Teutonico, L. J. 1967

机译：立方晶体中的位错势垒相互作用。第一卷。各向异性面心立方晶体中位错的相互作用。（断裂现象理论研究）

X-ray Scattering by Dislocations in Crystals. 1. General Theory and Applicationto Screw Dislocations

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