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Resistance to Fracture of Additively Manufactured Aluminium Alloy AlSi10Mg under Plane Stress Conditions
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Resistance to Fracture of Additively Manufactured Aluminium Alloy AlSi10Mg under Plane Stress Conditions

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Abstract:

Additive manufacturing gains ground on the production of high-precision metallic components with varying thickness. As the material thickness alters in the various locations of the product, it is eminent that the material mechanical properties might vary. In the present contribution, a preliminary study was performed to investigate the resistance to fracture of additively manufactured AlSi10Mg material with varying thicknesses. To this end, fracture toughness specimens of compact tension geometry with varying thicknesses from 3 to 15 mm were additively manufactured, machined and tested. The results showed that with increasing the specimen thickness, critical stress intensity factor Kcr decreases gradually from 38 MPa√m up till 31 MPa√m for the lower and higher investigated thicknesses, respectively. Finally, it was noticed that even the 15 mm thickness (higher investigated) does not satisfy the plane strain fracture mechanism and therefore all investigated specimens were in plane-stress condition.

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Info:

Periodical:

Key Engineering Materials (Volume 1047)

Pages:

383-389

Online since:

April 2026

Authors:

Ioannis Goulas*, Alexis Kermanidis, Leonard Alberty, Ismail Ünsal, Georg Schlick, Sven Gründer, Dennis Lenhert, Florian Hengsbach, Nikolaos D. Alexopoulos

Keywords:

Additive Manufacturing, AlSi10Mg, Fracture Toughness, Laser Powder Bed Fusion

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Creative Commons CC BY 4.0

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* - Corresponding Author

References

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