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AM60B magnesium alloy sheets with excellent mechanical properties are prepared by a double‐pass high strain rate rolling (HSRR) with gradient cooling from 370 to 340 °C. A bimodal lamellar structure, consisting of fine dynamically recrystallized grains, shear bands and fine precipitates, is obtained after the second‐pass HSRR. Formation mechanisms of shear bands are studied in depth. The results...
Semi‐solid billets of an AZ61 magnesium alloy are prepared by a repetitive upsetting‐extrusion (RUE)‐based strain induced melt activation (SIMA) method. Mechanical response and microstructure evolution in compression of the semi‐solid slurry with high solid fraction are investigated. The results reveal that the SIMA‐processed thixotropic structure comprises of globular solid particles and liquid...
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