Figure 6
From: Effect of solution treatment on the fatigue behavior of an as-forged Mg-Zn-Y-Zr alloy
High-magnification observations of the fatigue fracture surface morphology of samples S1, S2, N1 and N2.
Images (a,b) are secondary electron images of the oxide film located at the fatigue crack initiation regions of samples S1 and S2, respectively; Images (c,d) are secondary electron images of the crack initiation sites of samples N1 and N2, respectively. It should be noted that the inserts in images (a,b) are EDS results of the coresponding marked areas in the images; the inserts in images (c,d) are high-magnification images of the coresponding marked areas.
