Corrosion Testing of a Heat Treated 316 L Functional Part Produced by Selective Laser Melting
| Autor: | Kim Vanmeensel, Maria Montero Sistiaga, Evy De Bruycker, Fabien Thielemans |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Selective laser melting Materials science 020209 energy Metallurgy 316 L Stress corrosion cracking 02 engineering and technology Corrosion Metal Stress (mechanics) Residual stresses 020901 industrial engineering & automation Heat treatments Residual stress visual_art Thermal 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Condenser (heat transfer) |
| Zdroj: | Materials Sciences and Applications. :223-233 |
| ISSN: | 2153-1188 2153-117X |
| DOI: | 10.4236/msa.2017.83015 |
| Popis: | Selective Laser Melting (SLM) shows a big potential among metal additive manufacturing (AM) technologies. However, the large thermal gradients and the local melting and solidification processes of SLM result in the presence of a significant amount of residual stresses in the as built parts. These internal stresses will not only affect mechanical properties, but also increase the risk of Stress Corrosion Cracking (SCC). A twister used in an air extraction pump of a condenser to create a swirl in the water, was chosen as a candidate component to be produced by SLM in 316 L stainless steel. Since the main expected damage mechanism of this component in service is corrosion, corrosion tests were carried out on an as-built twister as well as on heat treated components. It was shown that a low temperature heat treatment at 450°C had only a limited effect on the residual stress reduction and concomitant corrosion properties, while the internal stresses were significantly reduced when a high temperature heat treatment at 950°C was applied. Furthermore, a specific stress corrosion sensitivity test proved to be a useful tool to evaluate the internal stress distribution in a specific component. ispartof: Materials Sciences and Applications vol:8 pages:223-233 status: published |
| Databáze: | OpenAIRE |
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