Journal
TRANSACTIONS OF FAMENA
Volume 41, Issue 4, Pages 11-24Publisher
UNIV ZAGREB FAC MECHANICAL ENGINEERING & NAVAL ARCHITECTURE
DOI: 10.21278/TOF.41402
Keywords
selective laser melting; honeycomb cellular core; 316L stainless steel; mechanical performance; accelerated corrosion test
Funding
- Structural Funds Project PRO-DD (POS-CCE, O.2.2.1) [123, SMIS 2637, 11/2009]
- Access to Research Infrastructures activity in the 7th Framework Programme of the EU (SFERA Grant) [228296]
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Selective laser technology is an additive technology that can allow for the manufacture of cellular structures using different types of metallic powder with complex applications in industries such as aerospace, automotive and medical implant industries. This paper presents the effect of climate and mechanical stresses on some honeycomb cellular cores, used in sandwich structures made of 316L stainless steel powder by applying the selective laser melting technology. The honeycomb cellular cores have undergone the microhardness testing and the resulting variation obtained from the analyzed samples was 225 +/- 15 HV0.3. The compressive strength and the modulus of elasticity of the cellular structures were determined for flatwise and edgewise compressive stresses. Also, the cellular structures were subjected to accelerated corrosion tests in order to determine their mean life in application use conditions similar to those near seas and oceans. Also, a microstructural evaluation of salt deposits was carried out on the cellular structures subjected to accelerated corrosion tests using a salt spray test chamber.
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