Michael Cloots
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View article: High power selective laser melting of crack sensitive nickel-base alloy CM247LC, including dimensional analysis and modelling
High power selective laser melting of crack sensitive nickel-base alloy CM247LC, including dimensional analysis and modelling Open
High power parameters with increased scan velocities and beam diameters are investigated, to decrease the production time for crack sensitive alloy CM247LC. Results are compared to crack-free reference LPBF-samples in the low power range. …
View article: High power selective laser melting of crack sensitive nickel-base alloy CM247LC, including dimensional analysis and modelling
High power selective laser melting of crack sensitive nickel-base alloy CM247LC, including dimensional analysis and modelling Open
Compared to reference parameters in the low power and scan velocity range, which lead to dense and crack-free CM247LC LPBF samples due to in-situ crack healing, high power, high scan velocities and increased laser beam diameters are invest…
View article: Relevance of single channel signals for two-colour pyrometer process monitoring of laser powder bed fusion
Relevance of single channel signals for two-colour pyrometer process monitoring of laser powder bed fusion Open
This paper discusses the relevance of two-colour pyrometers' single channel signals for process monitoring of laser powder bed fusion metal additive manufacturing. First, examples are presented where the ratio temperature provided by the p…
View article: Focus shift analysis, to manufacture dense and crack-free SLM-processed CM247LC samples
Focus shift analysis, to manufacture dense and crack-free SLM-processed CM247LC samples Open
Nickel-base alloy CM247LC is particularly sensitive for weld-cracking during powder-bed fusion, caused by an inappropriate laser spot diameter due to focus shifting. In this paper, the influence of a 4 mm focus shift on the melt pool geome…
View article: Determining process stability of Laser Powder Bed Fusion using pyrometry
Determining process stability of Laser Powder Bed Fusion using pyrometry Open
This study investigates the significance of melt pool temperature data obtained through pyrometry in a metal Laser Powder Bed Fusion (L-PBF, SLM) process. In an open-loop process like SLM, process monitoring is key in both determining the …
View article: Texture, microstructure and mechanical anisotropy in <scp>SLM</scp> processed superalloys
Texture, microstructure and mechanical anisotropy in <span>SLM</span> processed superalloys Open
Samples of Nickel‐based (IN738LC and Hastelloy X) and Cobalt‐based (Mar‐M509) alloys were built by selective laser melting (SLM). To evaluate the anisotropy in the mechanical behavior of the material due to layer‐wise build up, specimens w…