GRAIN BOUNDARY SLIDING AND DIFFUSIONAL CREEP
GRAIN BOUNDARY SLIDING AND DIFFUSIONAL CREEP
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DOI：
10.1007/bf02664244
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发表时间：
1971-01-01
期刊：
影响因子：
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通讯作者：
ASHBY, MF
中科院分区：
文献类型：
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作者：
RAJ, R;ASHBY, MF
详细讨论了非平面晶界上的滑动问题。应力场、滑动位移和速度可以在滑动方向上具有周期性形状的边界（波浪形或阶梯形晶界）处计算：a）当在边界处相遇的晶体内的变形是纯弹性时，B）当允许物质在边界上从一点扩散到另一点时。研究结果解决了以下问题。 1)当扩散流动和位错运动都不可能时，多晶体中会发生多少滑动？2)当物质发生扩散流动时，波状或阶梯状晶界的滑动速率是多少？3)在晶界滑动的多晶体中，扩散蠕变的速率是多少？4)蠕变速率如何受晶粒形状和晶界迁移的影响？5)离散颗粒的排列如何影响多晶体晶界处的滑动速率和扩散蠕变速率？的结果进行了比较与出版的解决方案，其中一些问题。
The problem of sliding at a nonplanar grain boundary is considered in detail. The stress field, and sliding displacement and velocity can be calculated at a boundary with a shape which is periodic in the sliding direction (a wavy or stepped grain boundary): a) when deformation within the crystals which meet at the boundary is purely elastic, b) when diffusional flow of matter from point to point on the boundary is permitted. The results give solutions to the following problems. 1) How much sliding occurs in a polycrystal when neither diffusive flow nor dislocation motion is possible? 2) What is the sliding rate at a wavy or stepped grain boundary when diffusional flow of matter occurs? 3) What is the rate of diffusional creep in a polycrystal in which grain boundaries slide? 4) How is this creep rate affected by grain shape, and grain boundary migration? 5) How does an array of discrete particles influence the sliding rate at a grain boundary and the diffusional creep rate of a polycrystal? The results are compared with published solutions to some of these problems.