Abstract
Selective laser melting (SLM) is an additive manufacturing process that enables novel alloy production by combining metals with significantly different physical properties. In this paper, the hot corrosion behavior of Ti–Re alloys fabricated by SLM was studied in a mixture of Na2SO4 and NaCl salts at 600 °C. The morphology and composition of the corrosion products were characterized by scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray diffraction to understand the degradation mechanisms. It has been shown that the hot corrosion resistance of Ti–Re alloys was influenced by the chemical inhomogeneity of the oxide scale resulting from the presence of rhenium particles undissolved during the SLM process.
Highlights
Selective laser melting (SLM) is one of the rapid prototyping (RP) techniques for manufacturing nearly fully dense three-dimensional elements directly from CAD data
The hot corrosion behavior of Ti–Re alloys fabricated by SLM was studied in a mixture of Na2SO4 and NaCl salts at 600 °C
It has been shown that the hot corrosion resistance of Ti–Re alloys was influenced by the chemical inhomogeneity of the oxide scale resulting from the presence of rhenium particles undissolved during the SLM process
Summary
Selective laser melting (SLM) is one of the rapid prototyping (RP) techniques for manufacturing nearly fully dense three-dimensional elements directly from CAD data. During the SLM process, thin metallic powder layers (50–100 lm) are spread out on a building platform and subsequently fully melted and consolidated by a. SLM offers several advantages over the conventional manufacturing techniques such as reduction in processing steps, high material utilization and a near-net shape production of the geometrically complex shapes with a minimal machining [5, 6]. For these reasons, it is an attractive alternative to process difficultto-machine materials such as titanium and its alloys. The SLM technology provides an ideal platform for a near-net shape production of Ti components instead of the highly time- and energy-consuming conventional multi-step processing techniques such as casting or powder metallurgy [6, 8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
