Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion
This study explores the effect of heat treatment on the microstructural characteristics and corrosion resistance of 316L stainless steels (SSs) produced via laser powder bed fusion (L-PBF), focusing on anisotropic corrosion behavior—a relatively less explored phenomenon in LPBF 316L SSs. By systemat...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/41 |
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| author | Kevin Sangoi Mahdi Nadimi Jie Song Yao Fu |
| author_facet | Kevin Sangoi Mahdi Nadimi Jie Song Yao Fu |
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| description | This study explores the effect of heat treatment on the microstructural characteristics and corrosion resistance of 316L stainless steels (SSs) produced via laser powder bed fusion (L-PBF), focusing on anisotropic corrosion behavior—a relatively less explored phenomenon in LPBF 316L SSs. By systematically analyzing the effects of varying heat treatment temperatures (500 °C, 750 °C, and 1000 °C), this work uncovers critical correlations between microstructural evolution and corrosion properties. The findings include the identification of anisotropic corrosion resistance between horizontal (XY) and vertical (XZ) planes, with the vertical plane demonstrating higher pitting and repassivation potentials but greater post-repassivation current densities. Furthermore, this study highlights reductions in grain size, dislocation density, and melt pool boundaries with increasing heat treatment temperatures, which collectively diminishes corrosion resistance. These insights advance the understanding of processing–structure–property relationships in additively manufactured metals, providing practical guidelines for optimizing thermal post-processing to enhance material performance in corrosive environments. |
| format | Article |
| id | doaj-art-1a8ee1cdc3bb4c0f95a3a4c0138756ad |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj-art-1a8ee1cdc3bb4c0f95a3a4c0138756ad2025-01-24T13:41:29ZengMDPI AGMetals2075-47012025-01-011514110.3390/met15010041Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed FusionKevin Sangoi0Mahdi Nadimi1Jie Song2Yao Fu3Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USADepartment of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USACollege of Engineering, SUNY Polytechnic Institute, Utica, NY 13502, USADepartment of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USAThis study explores the effect of heat treatment on the microstructural characteristics and corrosion resistance of 316L stainless steels (SSs) produced via laser powder bed fusion (L-PBF), focusing on anisotropic corrosion behavior—a relatively less explored phenomenon in LPBF 316L SSs. By systematically analyzing the effects of varying heat treatment temperatures (500 °C, 750 °C, and 1000 °C), this work uncovers critical correlations between microstructural evolution and corrosion properties. The findings include the identification of anisotropic corrosion resistance between horizontal (XY) and vertical (XZ) planes, with the vertical plane demonstrating higher pitting and repassivation potentials but greater post-repassivation current densities. Furthermore, this study highlights reductions in grain size, dislocation density, and melt pool boundaries with increasing heat treatment temperatures, which collectively diminishes corrosion resistance. These insights advance the understanding of processing–structure–property relationships in additively manufactured metals, providing practical guidelines for optimizing thermal post-processing to enhance material performance in corrosive environments.https://www.mdpi.com/2075-4701/15/1/41heat treatmentcorrosion resistanceadditive manufacturinglaser powder bed fusion316L stainless steelpitting corrosion |
| spellingShingle | Kevin Sangoi Mahdi Nadimi Jie Song Yao Fu Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion Metals heat treatment corrosion resistance additive manufacturing laser powder bed fusion 316L stainless steel pitting corrosion |
| title | Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion |
| title_full | Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion |
| title_fullStr | Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion |
| title_full_unstemmed | Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion |
| title_short | Heat Treatment Effect on the Corrosion Resistance of 316L Stainless Steel Produced by Laser Powder Bed Fusion |
| title_sort | heat treatment effect on the corrosion resistance of 316l stainless steel produced by laser powder bed fusion |
| topic | heat treatment corrosion resistance additive manufacturing laser powder bed fusion 316L stainless steel pitting corrosion |
| url | https://www.mdpi.com/2075-4701/15/1/41 |
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