M
Markus Chmielus
Researcher at University of Pittsburgh
Publications - 29
Citations - 784
Markus Chmielus is an academic researcher from University of Pittsburgh. The author has contributed to research in topics: Microstructure & Jet (fluid). The author has an hindex of 9, co-authored 29 publications receiving 323 citations. Previous affiliations of Markus Chmielus include Cornell University.
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Binder jet 3D printing—Process parameters, materials, properties, modeling, and challenges
Amir Mostafaei,Amy M. Elliott,John E. Barnes,Fangzhou Li,Wenda Tan,Corson L. Cramer,Peeyush Nandwana,Markus Chmielus +7 more
TL;DR: In this paper, a detailed review of the physical processes during 3D printing and the fundamental science of densification after sintering and post-heat treatment steps are provided to understand the microstructural evolution and properties of binder jetted parts.
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Effect of powder size distribution on densification and microstructural evolution of binder-jet 3D-printed alloy 625
TL;DR: The results in this article suggest that particle size distribution is a determining factor for supersolidus liquid phase sintering, pore removal and final microstructure, if printing parameters such as layer thickness, binder saturation, printhead binder droplet size and drying time are similar.
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WITHDRAWN: Binder jet 3D printing – Process parameters, materials, properties, and challenges
Amir Mostafaei,Amir Mostafaei,Amy M. Elliott,John E. Barnes,Corson L. Cramer,Peeyush Nandwana,Markus Chmielus +6 more
Journal ArticleDOI
Density variation in binder jetting 3D-printed and sintered Ti-6Al-4V
TL;DR: In this paper, the authors studied the effect of post-processing on the density evolution of a Ti-6Al-4V binder jet printed part and found that the density is lower at the edges of the part and higher in regions of significant topological curvature, likely due to variations originating from the printing process.
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Characterizing surface finish and fatigue behavior in binder-jet 3D-printed nickel-based superalloy 625
Amir Mostafaei,S. Harsha Vardhan R. Neelapu,Cameron Kisailus,Lauren M. Nath,Tevis D. B. Jacobs,Markus Chmielus +5 more
TL;DR: In this paper, the fatigue properties of binder-jet 3D-printed nickel-base superalloy 625 were evaluated using micro-computed x-ray tomography, metallographic sample examination, and optical and stylus profilometry for surface topography.