Observations on comparable aluminium alloy crack growth curves: Additively manufactured Scalmalloy® as an alternative to AA5754 and AA6061-T6 alloys?

Rhys Jones; Jan Cizek; Ondrej Kovarik; Andrew Ang; Victor Champagne

Additive Manufacturing Letters (Apr 2022)

Observations on comparable aluminium alloy crack growth curves: Additively manufactured Scalmalloy® as an alternative to AA5754 and AA6061-T6 alloys?

Rhys Jones,
Jan Cizek,
Ondrej Kovarik,
Andrew Ang,
Victor Champagne

Affiliations

Rhys Jones: Centre of Expertise for Structural Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC, 3800, Australia; ARC Industrial Transformation Training Centre on Surface Engineering for Advanced Materials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, John Street, Hawthorn, Victoria 3122, Australia; Corresponding author.
Jan Cizek: Institute of Plasma Physics of the Czech Academy of Sciences, Prague, Czech Republic
Ondrej Kovarik: Faculty on Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
Andrew Ang: ARC Industrial Transformation Training Centre on Surface Engineering for Advanced Materials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, John Street, Hawthorn, Victoria 3122, Australia
Victor Champagne: US Army Research Laboratory, U.S. Army Combat Capabilities Development Command Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD, USA

Journal volume & issue: Vol. 2
p. 100026

Abstract

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Scalmalloy® has been proposed for use as additively manufactured (AM) replacement aluminium alloy parts for civil and military aircraft, and for AM aluminium parts for use in satellites and space structures. This study builds on the results of a prior investigation to reveal that Scalmalloy® has a crack growth curve similar to those associated with aluminium alloys AA5754 and AA6061-T6, which are widely used in the automotive industry and in maritime vessels. The R = 0.1 da/dN versus ΔK curve for small naturally occurring cracks in LPBF Scalmalloy® is also predicted and the additive manufacturing community is challenged to undertake testing to validate or disprove this prediction.

Published in Additive Manufacturing Letters

ISSN: 2772-3690 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Technology (General): Industrial engineering. Management engineering
Website: https://www.journals.elsevier.com/additive-manufacturing-letters/

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