zralnicu
第5楼2019/01/11
这是一文献,Microstructure-based analysis of fatigue behaviour of Al-Si-Mg alloy 。 相关内容就是:
From the dislocation structures, [011] crystallographic axis of dislocation structure is fairly
clear. Two typical slip-lines are observed, the directions are [211] or [211] and the cross-slip angle is 70.6?.
This can prove that the movement of dislocation structure has a certain regularity during the process. From these results, it is found that slip systems are activated through the process, and the slip line starts and bears a lot of plastic deformation. With other factors such as pile up of dislocations against boundaries, the energy for further movement is greater than the needed, then another set of slip systems starts and begins to develop cross-banded sliding structure, some other slip systems may be also activated later. 看图片也不是严格双束条件。我就是不懂图中箭头方向【-211】如何定的?
TEM
第6楼2019/01/13
不管是不是双束条件,都是根据衍射点定的方向