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制取了具有[110]对称倾斜晶界的纯铝双晶体,获得了18种不同取向差的纯铝双晶试样。测定了晶界滑动速率与晶界取向差的关系。发现,晶界滑动速率是晶界取向差(晶界结构)的敏感量;晶界滑动激活能随取向差变化而变化,并有极小值和极大值,晶界滑动速率随晶界切应力的增加呈线性上升;晶界滑动速率随温度的升高呈指数增加。
Pure aluminum double crystals with [110] symmetrical oblique grain boundaries were obtained, and 18 pure aluminum bimorph samples with different orientation differences were obtained. The relationship between grain boundary slip rate and grain boundary orientation difference was measured. It is found that the grain boundary slip rate is sensitive to the grain boundary orientation difference (grain boundary structure). The grain boundary slip activation energy varies with the orientation difference and has minimum and maximum values. The grain boundary slip rate varies with grain boundary The increase of stress increases linearly; the slip rate of grain boundary increases exponentially with the increase of temperature.