Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel
This study investigates the deposition of tungsten (W) onto a 316L steel substrate by laser powder bed fusion (L-PBF), to optimize process parameters and analyze the interface between W and 316L. To obtain high-density W structure (98.89%), the optimal laser power was 350 W, and scan speed was 500 m...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Additive Manufacturing Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369024000549 |
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| author | Seung-Hoon Lee Ji-Hoe Koo Omer Cakmak Jung-Wook Cho |
| author_facet | Seung-Hoon Lee Ji-Hoe Koo Omer Cakmak Jung-Wook Cho |
| author_sort | Seung-Hoon Lee |
| collection | DOAJ |
| description | This study investigates the deposition of tungsten (W) onto a 316L steel substrate by laser powder bed fusion (L-PBF), to optimize process parameters and analyze the interface between W and 316L. To obtain high-density W structure (98.89%), the optimal laser power was 350 W, and scan speed was 500 mm/s, but these parameters cause significant dilution of W in the W-316L interface; as a result, Fe7W6 intermetallics form, despite L-PBF being a non-equilibrium solidification process. These intermetallics which are brittle could degrade joint strength. By reducing laser power below 250 W, the dilution of W can be mitigated, and potentially minimize formation of intermetallics and increase joint stability for advanced manufacturing applications. |
| format | Article |
| id | doaj-art-2f7a7ffbd8ee40f88af525970010dd4f |
| institution | OA Journals |
| issn | 2772-3690 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Additive Manufacturing Letters |
| spelling | doaj-art-2f7a7ffbd8ee40f88af525970010dd4f2025-08-20T02:34:19ZengElsevierAdditive Manufacturing Letters2772-36902024-12-011110024610.1016/j.addlet.2024.100246Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steelSeung-Hoon Lee0Ji-Hoe Koo1Omer Cakmak2Jung-Wook Cho3Graduate Institute of Ferrous & Eco Materials Technology, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of KoreaDivision of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of KoreaDivision of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of KoreaGraduate Institute of Ferrous & Eco Materials Technology, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea; Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea; Corresponding author.This study investigates the deposition of tungsten (W) onto a 316L steel substrate by laser powder bed fusion (L-PBF), to optimize process parameters and analyze the interface between W and 316L. To obtain high-density W structure (98.89%), the optimal laser power was 350 W, and scan speed was 500 mm/s, but these parameters cause significant dilution of W in the W-316L interface; as a result, Fe7W6 intermetallics form, despite L-PBF being a non-equilibrium solidification process. These intermetallics which are brittle could degrade joint strength. By reducing laser power below 250 W, the dilution of W can be mitigated, and potentially minimize formation of intermetallics and increase joint stability for advanced manufacturing applications.http://www.sciencedirect.com/science/article/pii/S2772369024000549Laser powder bed fusionTungstenW-316L joiningDirect depositionMicrostructureIntermetallics |
| spellingShingle | Seung-Hoon Lee Ji-Hoe Koo Omer Cakmak Jung-Wook Cho Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel Additive Manufacturing Letters Laser powder bed fusion Tungsten W-316L joining Direct deposition Microstructure Intermetallics |
| title | Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel |
| title_full | Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel |
| title_fullStr | Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel |
| title_full_unstemmed | Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel |
| title_short | Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel |
| title_sort | effect of laser power during laser powder bed fusion on microstructure of joining interface between tungsten and aisi 316l steel |
| topic | Laser powder bed fusion Tungsten W-316L joining Direct deposition Microstructure Intermetallics |
| url | http://www.sciencedirect.com/science/article/pii/S2772369024000549 |
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