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

doi:10.1016/j.addlet.2022.100026

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

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › Research › peer-review

20 Citations (Scopus)

Abstract

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.

Original language	English
Article number	100026
Number of pages	6
Journal	Additive Manufacturing Letters
Volume	2
DOIs	https://doi.org/10.1016/j.addlet.2022.100026
Publication status	Published - Apr 2022

Keywords

Additive manufacturing
Fatigue crack growth
Hartman-Schijve crack growth equation
Scalmalloy®

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10.1016/j.addlet.2022.100026

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title = "Observations on comparable aluminium alloy crack growth curves: Additively manufactured Scalmalloy{\textregistered} as an alternative to AA5754 and AA6061-T6 alloys?",

abstract = "Scalmalloy{\textregistered} 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{\textregistered} 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{\textregistered} is also predicted and the additive manufacturing community is challenged to undertake testing to validate or disprove this prediction.",

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T2 - Additively manufactured Scalmalloy® as an alternative to AA5754 and AA6061-T6 alloys?

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AU - Cizek, Jan

AU - Kovarik, Ondrej

AU - Ang, Andrew

AU - Champagne, Victor

PY - 2022/4

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N2 - 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.

AB - 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.

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

Abstract

Keywords

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