PT  - JOURNAL ARTICLE
AU  - Schmidova, Eva
AU  - Hojka, Premysl
AU  - Culek, Bohumil
AU  - Klejch, Filip
AU  - Schmid, Michal
TI  - Dynamic Strength and Anisotropy of Dmls Manufactured Maraging Steel
DP  - 2019 Aug 15
TA  - Communications - Scientific Letters of the University of Zilina
PG  - 35--39
VI  - 21
IP  - 3
AID - 10.26552/com.C.2019.3.35-39
IS  - 13354205
AB  - 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.