TY - JOUR
T1 - Relationship between Phase Fractions and Mechanical Properties in Heat-Treated Laser Powder-Bed Fused Co-Based Dental Alloys
AU - von Kobylinski, Jonas
AU - Hitzler, Leonhard
AU - Lawitzki, Robert
AU - Krempaszky, Christian
AU - Öchsner, Andreas
AU - Werner, Ewald
N1 - Publisher Copyright:
© 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - Metal additive manufacturing of dental prostheses consisting of cobalt−chromium−tungsten (Co−Cr−W) alloys poses an alternative to investment casting. However, metal additive manufacturing processes like Laser Powder-Bed Fusion (LPBF) can impact the elastic constants and the mechanical anisotropy of the resulting material. To investigate the phase compositions of mechanically different specimens in dependence of their postprocessing steps (e. g. heat treatment to relieve stress), the current study uses X-ray Diffraction (XRD), Electron BackScatter Diffraction (EBSD), and Transmission Electron Microscopy (TEM) for phase identification. Our studies connect plastic deformation of Remanium star CL alloy with the formation of the hexagonal ϵ-phase and heat treatment with the formation of the D024-phase, while partially explaining previously observed differences in Young's moduli.
AB - Metal additive manufacturing of dental prostheses consisting of cobalt−chromium−tungsten (Co−Cr−W) alloys poses an alternative to investment casting. However, metal additive manufacturing processes like Laser Powder-Bed Fusion (LPBF) can impact the elastic constants and the mechanical anisotropy of the resulting material. To investigate the phase compositions of mechanically different specimens in dependence of their postprocessing steps (e. g. heat treatment to relieve stress), the current study uses X-ray Diffraction (XRD), Electron BackScatter Diffraction (EBSD), and Transmission Electron Microscopy (TEM) for phase identification. Our studies connect plastic deformation of Remanium star CL alloy with the formation of the hexagonal ϵ-phase and heat treatment with the formation of the D024-phase, while partially explaining previously observed differences in Young's moduli.
KW - Co−Cr−W
KW - LPBF
KW - additive manufacturing
KW - dental restorations
KW - elastic anisotropy
KW - phase transformation
UR - http://www.scopus.com/inward/record.url?scp=85081679110&partnerID=8YFLogxK
U2 - 10.1002/ijch.201900156
DO - 10.1002/ijch.201900156
M3 - Article
AN - SCOPUS:85081679110
SN - 0021-2148
VL - 60
SP - 607
EP - 614
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
IS - 5-6
ER -