|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|In-situ Analysis on Formation and Development of LPSO-like Nanostructures in Dilute MgYZn and MgGdZn Alloys
|Hiroshi Okuda, Michiaki Yamasaki, Yoshihito Kawamura
|On-Site Speaker (Planned)
Controlling formation of partial structures of long-period stacking ordered structure in dilute MgYZn alloys has been expected to be a prospective approach to strengthen Mg based materials without increasing specific weight. To understand the formation kinetics, however, in-situ approach is important, since phase transformation process in dilute MgYZn alloy is expected to be thermal history dependent, and many intermediate structures may appear. We performed in-situ small- and wide angle scattering measurements to examine nanostructural evolution during heat treatments. Mg100-x-yYxZny and Mg100-x-yGdxZny alloys have been heat up to annealing temperatures in-situ. Two well-defined clustering region was found for both alloys: clusters formed at lower temperatures once disappears before stable L12 clusters are formed at higher temperatures. Clusters at lower temperatures were reported to be less effective for strengthening.
|Characterization, Magnesium, Phase Transformations