RT Journal Article
SR Electronic
A1 Schmidova, Eva
A1 Hojka, Premysl
A1 Culek, Bohumil
A1 Klejch, Filip
A1 Schmid, Michal
T1 Dynamic Strength and Anisotropy of Dmls Manufactured Maraging Steel
JF Communications - Scientific Letters of the University of Zilina
YR 2019
VO 21
IS 3
SP 35
OP 39
DO 10.26552/com.C.2019.3.35-39
UL https://komunikacie.uniza.sk/artkey/csl-201903-0006.php
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.