Dynamic Strength and Anisotropy of Dmls Manufactured Maraging Steel

https://doi.org/10.26552/com.C.2019.3.35-39

  • Eva Schmidova
  • Premysl Hojka
  • Bohumil Culek
  • Filip Klejch
  • Michal Schmid
Keywords: DMLS technology, 3D printing, maraging steel, impact tensile tests

Abstract

This paper deals with maraging steel, as a prospective material for the 3D printed lightened structural parts of transport means. Direct Metal Laser Sintering technology was tested for creation of a thin-wall structure with defined internal geometry. The referential samples prepared by the DMLS technology were examined under quasi-static and high strain rate loading using a servo-hydraulic testing machine at strain rates up to 1400 s-1. Microstructural analyses served for evaluation of structural homogeneity and metallurgy quality, including the influence of crystallization gradient. The stabile ductile fracture mode was proven by fractography analyses, even at a maximal strain rate. The post-impact tests were conducted to evaluate the local residual plasticity by indentation tests.

Author Biographies

Eva Schmidova

Faculty of Transport Engineering, University of Pardubice, Czech Republic

Premysl Hojka

Faculty of Transport Engineering, University of Pardubice, Czech Republic

Bohumil Culek

Faculty of Transport Engineering, University of Pardubice, Czech Republic

Filip Klejch

Faculty of Transport Engineering, University of Pardubice, Czech Republic

Michal Schmid

Faculty of Transport Engineering, University of Pardubice, Czech Republic

Published
2019-08-15
How to Cite
Eva Schmidova, Premysl Hojka, Bohumil Culek, Filip Klejch, & Michal Schmid. (2019). Dynamic Strength and Anisotropy of Dmls Manufactured Maraging Steel. Communications - Scientific Letters of the University of Zilina, 21(3), 35-39. https://doi.org/10.26552/com.C.2019.3.35-39
Section
Mechanical Engineering in Transport