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On the Effect of Part Orientation on Stress Distribution in AlSi10Mg Specimens Fabricated by Laser Powder Bed Fusion (L-PBF)
摘要： The freedom of design of AM products suffers from some limitations in case of powder bed metal processes, because AM part’s integrity is affected by the residual stress state that is a consequence of the thermal history during part fabrication. Aim of this work is to evaluate the effect of part orientation on stress distribution. Thus, flat samples of AlSi10Mg alloy built along different orientations are produced by means of laser powder bed fusion (L-PBF) process, also known as Selective Laser Melting (SLM). Then, the semi-destructive hole-drilling method is used to evaluate residual stresses beneath the surfaces of samples. The outcomes of the study can be exploited to define design rules in order to both minimize support structures and optimize the orientation of the part in the building volume.
关键词： Powder bed fusion,Residual stresses,Hole-drilling method,AlSi10Mg,Orientation
更新于2025-09-16 10:30:52
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Machining induced residual stresses in AlSi10Mg component produced by Laser Powder Bed Fusion (L-PBF)
摘要： The adoption of metal powder-based laser process (L-PBF) for industrial applications continues to widen, due to an increasing knowledge on additive processes and the availability of new systems for industrial production. The use of L-PBF processes requires a deeper investigation and comparison on mechanical properties of conventional and additive parts. For instance, metal parts produced by L-PBF could require additional machining operations, which alter the stress state of additive components. In this work, the effect of machining operations on the residual stress state of an AlSi10Mg component produced by L-PBF is investigated by means of the semi destructive hole-drilling method.
关键词： AlSi10Mg,Machining,Hole-drilling method,Residual stresses,Laser Powder Bed Fusion
更新于2025-09-12 10:27:22