Intergranular Cracking in Mg-Gd-Y Alloy during Tension Test

The intergranular cracking in the Mg-Gd-Y alloy was investigated by an situ tension test combined with electron backscattered diffraction (EBSD) measurement and digital image correlation (DIC). During test, crack found at triangle point of grain boundary area profuse slip traces. DIC results show that inhomogeneous strain distribution can be area, leads to serious deformation incompatibility this point. This also a weak for initiation, as increases, would extend from along boundary.