Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods

US11491546B2 · kind B2 · utility

Assignees

• UT-BATTELLE, LLC · US
• University of Tennessee Research Foundation · US
• IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. · US
• Eck Industries, Inc. · US

Inventors

• Alex J. Plotkowski · Oak Ridge, US
• Orlando Rios · Knoxville, US
• Sudarsanam Suresh Babu · Knoxville, US
• Ryan R. Dehoff · Knoxville, US
• Ryan T. Ott · Ames, US
• Zachary C. Sims · Knoxville, US
• Niyanth Sridharan · Oak Ridge, US
• David Weiss · Manitowoc, US
• Hunter B. Henderson · Knoxville, US

Key dates

• Filing date: Jul 9, 2020
• Grant date: Nov 8, 2022
• Expiry date: Jul 9, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Described herein are additive manufacturing methods and products made using such methods. The alloy compositions described herein are specifically selected for the additive manufacturing methods and provide products that exhibit superior mechanical properties as compared to their cast counterparts. Using the compositions and methods described herein, products that do not exhibit substantial coarsening, such as at elevated temperatures, can be obtained. The products further exhibit uniform microstructures along the print axis, thus contributing to improved strength and performance. Additives also can be used in the alloys described herein.