Effect of the subsidiary misorientation components on the “special grain boundary-general boundary” transformation in the vicinity of the coincidence misorientation of Σ17 in tin

Acta Metallurgica Pub Date : 1989-11-01 DOI:10.1016/0001-6160(89)90321-0

E.L. Maksimova , L.S. Shvindlerman, B.B. Straumal

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引用次数: 16

Abstract

A small-angle twist or second tilt component was introduced to tilt boundaries [001] in tin bicrystals with misorientation angles 28.3°. The method of triple junction was used to measure the temperature dependences of the relative surface tension of the boundaries obtained and to determine the temperature of the “special boundary-general boundary” phase transition. The dependence of the transition temperature on the twist component θ_k and on the second tilt κ_H was found. The temperature of the grain-boundary phase transition, T_c, decreases with growing θ_k and θ_H, but several times slower than under deviation of the misorientation angle on the coincidence misorientation. The tilt component diminishes T_c slower than the twist component does. The results confirm the dislocation model of the “special boundary-general boundary” phase transition, proposed earlier.

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辅助错取向分量对锡中Σ17重合错取向附近“特殊晶界-一般晶界”转变的影响

在取向角为28.3°的锡双晶中，引入了一个小角度扭转或第二倾斜分量来倾斜边界[001]。采用三结法测量了所得边界相对表面张力的温度依赖性，确定了“特殊边界-一般边界”相变的温度。发现转变温度与扭转分量θk和二次倾角κH有关。晶界相变温度Tc随θk和θH的增大而降低，但比重合错取向角偏离时慢几倍。倾斜分量减少Tc的速度比扭转分量慢。结果证实了先前提出的“特殊边界-一般边界”相变的位错模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Acta Metallurgica

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