Abstract
Mg-based alloys were prepared by rapid solidification of twin roll casting (TRC) which shows that the Mg-RE alloy expressed the quasi-amorphous phased and fine crystalline phase dual-phase material. Corrosion behavior of Mg-Based alloy in 3.5% NaCl solution after 48h immersion and mechanical properties were investigated. The result show that The Mg-RE alloy strip exhibited good corrosion resistance and higher ultimate tensile strength and elongation comparing to the AZ31 alloy strips. The elongation of Mg-RE alloy strip is also high than the AZ91 and ZK61 under powder metallurgy processing. These indicate that Mg-RE alloy produced by our method has a better ductility. This may due to the special microstructure of the Mg-RE alloy forms, i.e., quasi-amorphous phase plus fine crystalline phase dual phase state.
Highlights
C The term lightweight has been proposed for many years and it is still a hot topic in modern society, magnesium and its alloys as lightweight material are well accepted for many applications in automobile and aerospace industries
T process, twin-roll strip casting has beneficial effects on microstructure such as reducing segregation and grain size with a consequent improvement of mechanical properties and corrosion resistance[5,6,7].In this work, we focused on developing a new kind of Mg-based alloy with proper mechanical performance and good corrosion resistance
Specimens alloy with a dimension of 14mm × 14mm × 1mm were prepared for scanning electron microscope (SEM) and electron probe micro-analysis (EPMA) were prepared by the standard technique of grinding and polishing, followed by etching in a saturated solution of picric acid.In order to check out whether the mechanical properties of the as-cast Mg-RE alloy were improved by using the processing method proposed by the current study, a tensile test was conducted
Summary
C The term lightweight has been proposed for many years and it is still a hot topic in modern society, magnesium and its alloys as lightweight material are well accepted for many applications in automobile and aerospace industries. Twin-roll strip casting process combines casting and hot rolling into a single step, having an advantage of one-step processing of flat rolled products [4]. T process, twin-roll strip casting has beneficial effects on microstructure such as reducing segregation and grain size with a consequent improvement of mechanical properties and corrosion resistance[5,6,7].In this work, we focused on developing a new kind of Mg-based alloy with proper mechanical performance and good corrosion resistance. E cost-competitive method to produce the new material in sheet-form. It is considered as an efficient R mass-production technique
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