Magnesium alloys

US4194908A · kind A · utility

Inventors

• William Unsworth · Aspull, GB
• John F. King · San Francisco, US
• Stephen L. Bradshaw

Key dates

• Filing date: Mar 28, 1978
• Grant date: Mar 25, 1980
• Expiry date: Mar 28, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C23/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A magnesium-based alloy for casting contains at least 88% magnesium, 1.6-3.5% silver, 0.1-2.3% of rare earth metals comprising at least 60% neodymium, 0-2.3% thorium and 0.1-2.5% yttrium. When no more than 0.5% of yttrium is present the minimum amount of thorium is given by the equation ##EQU1## Other elements may be present to improve the alloy properties.