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New bayesian-optimization-based design of high-strength 7xxx-series alloys from recycled aluminum

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journal contribution
posted on 2023-11-08, 05:00 authored by A Vahid, S Rana, S Gupta, P Vellanki, S Venkatesh, T Dorin
Over the next decade, a large number of airplanes will reach the end of their useful life, providing an obvious source of valuable used metals such as 7075 alloy. In this project, old 7075 was remelted and alloyed with pure alloying elements to create new 7xxx-series alloys with enhanced performance. Aerospace alloys are extremely complex with multiple alloying elements and numerous processing steps, often making their optimization labor intensive and costly. In the current study, Bayesian optimization was used as the basis for adaptive experimental optimization to explore and optimize this multivariable problem. Novel Al alloys, based on the 7075 alloy, were proposed and their heat treatment processes optimized. Exhibiting maximum yield strength and ultimate tensile strength of 729 MPa and 761 MPa, respectively, the mechanical properties of the newly designed alloys are comparable to or exceed those of the current generation of high-strength 7xxx-series Al alloys.

History

Journal

JOM

Volume

70

Pagination

2704-2709

Location

New York, N.Y.

ISSN

1047-4838

eISSN

1543-1851

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, The Minerals, Metals & Materials Society

Issue

11

Publisher

Springer