Reconstruction of dislocation potential relief by means of self-blocking effect

Greenberg B.A.; Ivanov M.A.; Plotnikov A.V.

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Reconstruction of dislocation potential relief by means of self-blocking effect

机译：通过自锁效应重建位错电位

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The effect of dislocation self-blocking in intermetallic compounds with an anomalous temperature dependence of yield stress has been theoretically and experimentally analyzed. In essence, this effect is a dislocation self-immersion in a deep potential relief valley (without external stress). The possibility of reconstructing the relief shape (from one-valley to two-valley) is shown and the relief parameters are reported. The allowed and forbidden regions for self-blocking are revealed. The method for determining the ratio of the valley depths by measuring the self-blocking limiting angles between the dislocation segments is proposed. Transmission electron microscopy images of the dislocation structure can be used to this end. As an example, this ratio is estimated for a superpartial dislocation sliding in the cube plane in Ni_3Ge.

机译：从理论上和实验上分析了位错自粘效应在金属间化合物中的屈服应力与温度成反比的影响。从本质上讲，这种效应是位错自沉在深的潜在起伏谷中（没有外部应力）。显示了重建浮雕形状（从一谷到两谷）的可能性，并报告了浮雕参数。揭示了自阻塞的允许区域和禁止区域。提出了一种通过测量位错段之间的自阻挡极限角来确定谷深比的方法。为此可以使用位错结构的透射电子显微镜图像。例如，对于在Ni_3Ge中在立方平面中滑动的部分偏位错，可以估算该比率。

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《Crystallography reports》 |2010年第6期|共6页
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Greenberg B.A.; Ivanov M.A.; Plotnikov A.V.;
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正文语种 eng
中图分类晶体学;
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1. Self-Blocking of Dislocations in the Intermetallic Compound Ni_3Ge:Reconstruction of a Two-Valley Potential Relief [J] . B. A. Greenberg, M. A. Ivanov, O. V. Antonova, The Physics of Metals and Metallography . 2011,第2期

机译：金属间化合物Ni_3Ge中位错的自阻塞：两谷势垒的重建。
2. DETECTION OF (C + A)-TYPE DISLOCATION SELF-BLOCKING IN MAGNESIUM [J] . B. A. Grinberg, M. A. Ivanov, O. V. Antonova, Russian physics journal . 2012,第8期

机译：镁中（C + A）型位错自锁的检测
3. Self-Blocking of Dislocations in Intermetallic Compound Ni_3Ge: Cubic Slip [J] . B. A. Greenberg, M. A. Ivanov, O. V. Antonova, The Physics of Metals and Metallography . 2011,第4期

机译：金属间化合物Ni_3Ge：位错的位错自阻塞
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Reconstruction of dislocation potential relief by means of self-blocking effect

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