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Investigating the Correlation between Selective Laser Melting Parameters and Structural Defects in a VKNA-4UR-Type Nickel Alloy

Authors: Bazyleva O.A., Unchikova M.V., Golovlev N.A., Evgenov A.G. Published: 07.12.2018
Published in issue: #6(123)/2018  

DOI: 10.18698/0236-3941-2018-6-90-102

 
Category: Power Engineering | Chapter: Nuclear Power Plants, Fuel Cycle, Radiation Safety  
Keywords: heat-resistant intermetallic nickel alloy, additive manufacturing, selective laser melting, laser power, distance between paths, scanning speed, porosity, microcracks, structural defects

We investigated the correlation between selective laser melting modes and subsequent defects in a VKNA-4UR-type nickel alloy. We developed regression models that describe sufficiently well how laser power, scanning speed and the distance between laser paths affect porosity and crack formation tendencies in the resulting alloy. We determined which processing modes produce the lowest number of defects possible

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