2016
DOI: 10.1007/s11837-015-1798-5
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Characterization of an Aluminum Alloy Hemispherical Shell Fabricated via Direct Metal Laser Melting

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Cited by 25 publications
(19 citation statements)
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“…29 Small kinks observed on the DSC curves near 480°C during DSC measurements in both as-built and reference samples may be an indication of the latter event. However, the low temperature event (i.e., GPZ formation) was absent in AM fabricated AlSi10Mg parts in our study 14 and other studies 13,18,22,32 Additionally, the nanoscale precipitates observed in the primary a aluminum are not intermetallic compounds but pure Si. 18,32 The disparity can be attributed to the differences in microstructure and chemical distribution during the quenching/ solidification process.…”
Section: Disscussioncontrasting
confidence: 49%
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“…29 Small kinks observed on the DSC curves near 480°C during DSC measurements in both as-built and reference samples may be an indication of the latter event. However, the low temperature event (i.e., GPZ formation) was absent in AM fabricated AlSi10Mg parts in our study 14 and other studies 13,18,22,32 Additionally, the nanoscale precipitates observed in the primary a aluminum are not intermetallic compounds but pure Si. 18,32 The disparity can be attributed to the differences in microstructure and chemical distribution during the quenching/ solidification process.…”
Section: Disscussioncontrasting
confidence: 49%
“…33 In the AM fabricated part, the primary a Al inside of the cellular structure is supersaturated with Si and most of the Mg and trace impurities are preferentially located in the cellular walls and triple junctions. 13,18,32 If the cellular structure remains intact at low temperatures, the deficiency of Mg in the primary a Al will prevent the formation of Mg and Si rich GPZs. Above the Debye temperature of Al (h D ; 150°C, Table I) where Si diffusion becomes active, Si exolution occurs and forms uniformly dispersed nanosized Si precipitates in the a aluminum as illustrated by Fig.…”
Section: Disscussionmentioning
confidence: 99%
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“…This bonding is significantly influenced by the microstructure of the melt lines, since this structure differs from the matrix microstructure. Basically, segregation phases and coarser crystals with different crystal orientations show up in the melt lines [14].…”
Section: Tensile Testmentioning
confidence: 99%
“…The interplay between the length scales of AM builds and those of processing (e.g., localized melt pool size and shape) presents new challenges in the analysis and prediction of microstructure-sensitive performance characteristics. Furthermore, irregular component geometries and material anisotropies create compounded difficulties for traditional analysis methods [29].…”
Section: Introductionmentioning
confidence: 99%