Magnesium alloy for wheel and preparation method thereof

US11905577B2 · kind B2 · utility

Assignee

• CITIC Dicastal Co., Ltd. · CN

Inventors

• Lixin Huang · Nantong, CN
• Zuo Xu · Qinhuangdao City, CN
• Meng Li · Qinhuangdao City, CN
• Tieqiang Chen · Qinhuangdao City, CN
• Hanqi Wu · Qinhuangdao City, CN
• Qingzhu ZHANG · Beijing, CN

Key dates

• Filing date: Jan 14, 2022
• Grant date: Feb 20, 2024
• Expiry date: Mar 24, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22F1/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The disclosure discloses a magnesium alloy for wheels, comprising in mass percentage: Al: 2-3.0 wt. %; Zn: 0.5-1.0 wt. %; Mn: 0.3-0.5 wt. %; Ce: 0.15-0.3 wt. %; La: 0.05-0.1 wt. %, the balance is Mg. The magnesium alloy of the present invention takes Al element and Mn element as main alloying elements, supplemented by trace Ce and La elements as alloying process, and the nano-scale Mn-rich precipitated phase obtained during homogenization and the segregation of rare earth elements Ce and La at the interface and grain boundary of Mn-rich precipitated phase are used to inhibit the coarsening during extrusion and forging, so as to improve the strength and plastic deformation ability of the alloy.