Abstract
ABSTRACT In the present study, the structural evolution of the precipitates in Mg-Gd-Y-Zr alloy is investigated by means of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). The linearly aligned morphology of phases connected by bridging phase in one of the three equivalent crystal directions of is formed from defect-free randomly distributed phases. Considering the significant strengthening effect of precipitates, a novel perspective of investigating the induced strain field measured by geometric phase analysis (GPA) is conducted. The reducing value of the strain field accounts for a slight decrease in hardness after peak-ageing. Merging and rearrangement of precipitates are found to release the strain field.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
