High strength 7xxx aluminum alloys and methods of making the same

US11421309B2 · kind B2 · utility

Assignee

• Novelis Inc. · US

Inventors

• Rajeev G. Kamat · Marietta, US
• Dhruba J. Chakrabarti · Export, US
• Rashmi Ranjan Mohanty · Roswell, US
• Rahul Vilas Kulkarni · Marietta, US
• Duane E. Bendzinski · Woodstock, US
• Juergen Timm · Steißlingen, DE

Key dates

• Filing date: Oct 28, 2016
• Grant date: Aug 23, 2022
• Expiry date: Oct 28, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C2001/0081
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Described herein are novel 7xxx series aluminum alloys. The alloys exhibit high strength. The alloys can be used in a variety of applications, including automotive, transportation, electronics, aerospace, and industrial applications. Also described herein are methods of making and processing the alloys. Further described herein are methods of producing a metal sheet, which include casting an aluminum alloy as described herein to form an ingot, homogenizing the ingot, hot rolling the ingot to produce a hot band, and cold rolling the hot band to a metal sheet of final gauge.