36 research outputs found
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Effect of Post-Processing on the Microstructure and Mechanical Properties of Ultra-Low Carbon Steel Fabricated by Selective Laser Melting
In this study, the effects of heat treatments and hot-isotactic pressing (HIP) on the
microstructure and mechanical properties of ultra-low carbon steel produced using selective laser
melting (SLM) were investigated. Powder and prototypes characterizations including XRD phase
analysis, microstructural observations, and hardness were performed. It was found that heat
treatments at 1000 ºC and HIP process improved inter-particle bonding very slightly. Significant
increases in the grain size were observed for the annealed specimens at 600ºC and above as well
as after HIP due to recrystallization and further grain growth, which coincide with the drop in
hardness.Mechanical Engineerin
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Effect of Scanning Methods in the Selective Laser Melting of 316L/TiC Nanocomposites
Selective laser melting (SLM) is a promising additive manufacturing process that allows
for the fabrication of complex functional components by the selective layer-by-layer melting of
particles on a powder bed using a high-energy laser beam. In this study, the SLM process was
used to fabricate components of TiC/ 316L stainless steel nanocomposite using various laser
scanning methods. The results showed that the laser-scanning method used for the SLM process
affects the degree of densification, microstructure, and the hardness of the components produced.
We believe that the alternative fabrication route presented in this study should significantly
increase the use of nanocomposites.Mechanical Engineerin