Abstract
As the application field of magnesium alloys broadens, it is essential to develop magnesium alloys with combination of high strength and high formability. A newly designed TRC-ZAEX2100 alloy sheets were fabricated via twin-roll casting (TRC) and subsequent hot rolling, and the corresponding variations of microstructure, texture, mechanical property and stretch formability were investigated. The results showed that TRC-ZAEX2100 alloy sheets with high strength and high formability were produced and the related yield strength along RD reaches 201.2 MPa together with excellent IE values of 6.23 mm. Refined grain size, weakened basal texture and promoted mechanical property and formability were obtained via suitable alloying addition method. A massive amount of secondary phase particles with uniform distribution were induced by TRC process, which leads to further improvement of comprehensive performance. Therefore, the strengthening mechanisms for TRC-ZAEX2100 alloy sheets are related to solution strengthening, precipitate strengthening and grain boundary strengthening. The in-plane anisotropy of mechanical properties is dominated by distributions of Schmid factors for basal slips, which is ascribed to the variation of texture characterization. Ultimately, such developed alloys are expected to make comprehensive performance meet the increasing needs of various industries.
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