Mechanical spectroscopy study of as-cast and additive manufactured AlSi10Mg

Cabibbo, Marcello; Montanari, Roberto; Pola, Annalisa; Tocci, Marialaura; Varone, Alessandra

doi:10.1016/j.jallcom.2022.165361

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…More details about the process parameters and their microstructure are described in detail in refs. [16,24,25].…”

Section: Setmentioning

confidence: 99%

“…Recently, MS was used to study alloys produced by additive manufacturing (AM) technology, to better understand the correlation between manufacturing process, microstructure, and mechanical properties [16][17][18]. In fact, despite of advantages of AM techniques for manufacturing metal parts such as capability to produce complex geometries within an acceptable timespan and with low material waste, they have some drawbacks: surface roughness, porosity, residual stress, cracks, and unique microstructure connected to rapid solidification (10 7 °C/s) [19][20].…”

Section: Introductionmentioning

confidence: 99%

“…MS results of AlSi10Mg alloy produced by Laser Powder Bed Fusion (L-PBF) [16] showed an anomalous trend of dynamic modulus in the first test run that is no more present in successive runs. The anomalous behavior was not observed in the same as-cast alloy that exhibits the typical monotonous decreasing trend vs. temperature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Modulus Anomaly in Metallic Alloys Prepared by Additive Manufacturing

Cabibbo,

de Crescenzo,

Fava

et al. 2023

KEM

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Dynamic modulus vs. temperature was measured in different alloys (stainless steels, Al alloys, Ti alloys, Ni-base superalloys) prepared by additive manufacturing and an anomalous trend was observed in some of them. Dynamic modulus, measured in successive mechanical spectroscopy test runs with heating-cooling cycles, exhibits an anomalous trend in the first test run that is no longer present in the successive runs. The phenomenon consists in the inversion of the decreasing trend of modulus occurring during heating and gives rise to its permanent increase at the end of the complete heating-cooling cycle. The temperature range where the modulus anomaly takes place and the permanent increase observed after cooling depend on the specific alloy. Scanning electron microscopy (SEM) observations and density measurements revealed that the irreversible process causing the anomalous behavior is the closure of pores of nanometric size leading to material densification. This result has been discussed by considering lattice diffusion.

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“…More details about the process parameters and their microstructure are described in detail in refs. [16,24,25].…”

Section: Setmentioning

confidence: 99%