Communications - Scientific Letters of the University of Zilina 2019, 21(3):35-39 | DOI: 10.26552/com.C.2019.3.35-39
Dynamic Strength and Anisotropy of Dmls Manufactured Maraging Steel
- 1 Faculty of Transport Engineering, University of Pardubice, Czech Republic
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.
Keywords: DMLS technology; 3D printing; maraging steel; impact tensile tests
Received: March 21, 2019; Accepted: May 2, 2019; Published: August 15, 2019 Show citation
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