Effect of strut orientation on the microstructure heterogeneities in AlSi10Mg lattices processed by selective laser melting. (December 2017)

• Record Type: Journal Article
• Authors: Delroisse, Pauline; Jacques, Pascal J.; Maire, Eric; Rigo, Olivier; Simar, Aude
• Is Part Of: Scripta materialia. Number 141(2017)
• Page Start: 32
• Page End: 35
• Publication Date: 2017-12
• Subjects: Aluminum alloys -- Rapid solidification -- Three-dimensional tomography -- Coarsening -- Selective laser melting; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.07.020
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The microstructure heterogeneities are compared between inclined and vertical struts of AlSi10Mg lattices processed by Selective Laser Melting. While the vertical struts present a fully dense homogenous microstructure, large levels of porosities and heterogeneous microstructure are present in inclined struts, particularly a much larger level of porosities in the bottom part of the strut compared to the top part. These differences are due to a larger time spent at high temperature for the bottom zone of the strut. A solutionizing and aging heat treatment homogenizes the microstructure but leads to a minor softening due to eutectic spheroidization. Graphical abstract: