High-temperature mechanical properties of AlSi10Mg specimens fabricated by additive manufacturing using selective laser melting technologies (AM-SLM)

By N. Uzan, R. Shneck, O. Yeheskel, Nachum Frage. Additive Manufacturing, 2018

211 citations recorded by the source corpus.

Abstract Mechanical properties (tensile strength and creep) of AlSi10Mg specimens fabricated by selective laser melting (SLM) in the Z-direction were investigated in the 25-400 °C temperature range. Specimens were tested after stress relief treatment. The results revealed that yield stress (YS) significantly decreases and the elongation increases at temperatures higher than 200 °C. The ultimate tensile stress (UTS) continuously decreases with temperature. The creep parameters, namely stress exponent n and apparent activation energy Q, were found to be 25 ± 2 and 146 ± 20 kJ/mole, respectively. It was shown that plastic deformation during creep is governed by dislocation movements in primary aluminum grains. The tested material is actually an aluminum composite reinforced by sub-micron Si particles. The creep resistance of AlSi10Mg alloy fabricated by selective laser melting is close to that for aluminum matrix particles reinforced composites.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/eec3df60d15df63a11d59a9591798fea2e4cc5bd

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Citations in the corpus

Towards high-temperature applications of aluminium alloys enabled by additive manufacturing (2021, methodology): “We note that the value of sint is difficult to obtain, but is expected to be on the order of ∼100 MPa (measured as 133 MPa for Al/ SiC [276]), and is likely higher for semi-coherent and coherent interfaces.”
3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting (2019, result): “comparable to the conventionally-processed material, in agreement with [174].”
Coarsening- and creep resistance of precipitation-strengthened Al–Mg–Zr alloys processed by selective laser melting (2020, background): “[37] reported on the creep properties of an SLM printed Al-10Si-Mg (wt.”