Journal
TECHNOLOGIES
Volume 6, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/technologies6010025
Keywords
additive manufacturing; selective laser melting; processing parameters; stainless steel
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Funding
- Ministry of Higher Education & Scientific Research (MoHESR), Iraq
- ERC Advanced Grant INTELHYB [ERC-2013-ADG-340025]
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The synthesis of novel materials by additive manufacturing requires the optimization of the processing parameters in order to obtain fully-dense defect-free specimens. This step is particularly important for processing of composite materials, where the addition of a second phase may significantly alter the melting and solidification steps. In this work, a composite consisting of a 316L steel matrix and 5 vol.% CeO2 particles was fabricated by selective laser melting (SLM). The SLM parameters leading to a defect-free 316L matrix are not suitable for the production of 316L/CeO2 composite specimens. However, highly-dense composite samples can be synthesized by carefully adjusting the laser scanning speed, while keeping the other parameters constant. The addition of the CeO2 reinforcement does not alter phase formation, but it affects the microstructure of the composite, which is significantly refined compared with the unreinforced 316L material.
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