On the potential of aluminum crossover alloys

Lukas Stemper, Matheus A. Tunes, Ramona Tosone, Peter Uggowitzer, Stefan Pogatscher

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

2 Zitate (Scopus)
107 Downloads (Pure)


For almost a century commercial aluminum alloys were developed and optimized for high performance in a specific and narrow range of application, which commonly coincides with their industrial classification. Overcoming the limitations associated with the modern lightweighting concept requires new alloy design strategies that offer an expanded property portfolio with a better trade-off between formability and achievable strength. The associated materials would be key to circumventing the need for a multi material mix that diminishes the recyclability of the final product. This review summarizes current knowledge about a new class of materials, “crossover alloys”, that combine advantageous properties normally limited to certain classes of commercial aluminum alloys. It focuses on the crossover alloys AlMg/AlCuMg (5xxx/2xxx) and AlMg/AlZnMg(Cu) (5xxx/7xxx). Recently available research data provides indications for superior formability with simultaneously high age-hardening potential, which may pave the way for broader industrial application in the foreseeable future. Because these new alloys exhibit Mg as their major constituent but are – in contrast to commercial AlMg alloys – age hardenable, they do not fit into the current alloy classification scheme. This review formalizes crossover alloys as a potential new aluminum alloy class which features an innovative alloy design methodology.

FachzeitschriftProgress in materials science
Frühes Online-Datum1 Okt. 2021
PublikationsstatusVeröffentlicht - Feb. 2022

Bibliographische Notiz

Funding Information:
The financial support by the Austrian Federal Ministry for Digital and Economic Affairs, the National Foundation for Research, Technology and Development and the Christian Doppler Research Association is gratefully acknowledged. The authors also express their sincere thanks to AMAG rolling GmbH for financial support. MAT acknowledges current support from the Laboratory Directed Research and Development (LDRD) program of the Los Alamos National Laboratory under the project number 20200689PRD2. MAT expresses thanks for previous support from the European Research Council (ERC) excellent science grant “TRANSDESIGN” through the Horizon 2020 program under contract 757961 and the Austrian Research Promotion Agency (FFG) within project 3DnanoAnalytics (FFG-No. 858040).

Publisher Copyright:
© 2021 The Author(s)

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