Semi-solid metal casting process of hypoeutectic aluminum alloys

US6880613B2 · kind B2 · utility

Assignee

• SPX Corporation · US

Inventors

• Deepak Saha · Worcester, US
• Diran Apelian · West Boylston, US
• Mark Musser · Elkhart, US
• Zach Brown · Kalamazoo, US
• Dayne Killingsworth · South Bend, US

Key dates

• Filing date: May 1, 2003
• Grant date: Apr 19, 2005
• Expiry date: Oct 14, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S164/90
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for the refining of primary aluminum in hypoeutectic alloys by mixing at least two hypoeutectic alloys into a solid/semi-solid hypoeutectic slurry is described. The method provides control of the morphology, size, and distribution of primary Al in a hypoeutectic Al—Si casting by mixing a hypoeutectic Al—Si liquid with solid hypoeutectic Al—Si particles to impart desirable mechanical properties. The invention enables SSM molding of hypoeutiectic alloys without the need for secondary processing steps associated with other rheocasting processes.