Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting
Different from additive manufacturing and subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) is applied to 304 stainless steel (304SS) by laser surface melting (LSM) at four energy density (51 J/mm2, 44 J/mm2, 39 J/mm2, 37 J/mm2), aiming at improving the r...
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| Format: | Article |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542302152X |
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| author | B.S. Cao C.L. Wu L. Wang S. Zhang C.H. Zhang X.Y. Sun |
| author_facet | B.S. Cao C.L. Wu L. Wang S. Zhang C.H. Zhang X.Y. Sun |
| author_sort | B.S. Cao |
| collection | DOAJ |
| description | Different from additive manufacturing and subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) is applied to 304 stainless steel (304SS) by laser surface melting (LSM) at four energy density (51 J/mm2, 44 J/mm2, 39 J/mm2, 37 J/mm2), aiming at improving the resistance to corrosion and cavitation erosion without any addition of precious metals. The experimental results show that the microstructure presents the transformation from plane crystal → columnar crystal → equiaxed crystal from interface to top surface. All the samples exhibit austenite+martensite+Cr23C6, and the martensite content is increased from 9.3% to 40.8% with the energy density decreasing after iso-material manufacturing. In addition, low angle grain boundary is increased, and nano-mechanical properties also show an increasing trend. The decreasing of energy density also enhances the residual tensile stress of the melting layer. The sample obtained at energy density of 51 J/mm2 displays the highest corrosion resistance in 3.5 wt% NaCl solution, which can be attributed to its low galvanic corrosion degree and small residual tensile stress. The sample obtained at energy density of 39 J/mm2 exhibits the highest cavitation erosion resistance (Re) and its passivation film displays better self-repairing and re-passivation ability as indicated by synergistic cavitation erosion-corrosion behavior. The high cavitation erosion resistance can be attributed to the proper compromise of the constituent phases and higher self-repairing of the passivation film for the melting layer. Moreover, the 304 stainless steel prepared in this study exhibits a high or comparable corrosion and cavitation erosion resistance in comparison with the samples prepared by other fabrication method reported previously. |
| first_indexed | 2024-03-11T15:05:21Z |
| format | Article |
| id | doaj.art-fcfbee85b18f47708389b607e2551c62 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:05:21Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fcfbee85b18f47708389b607e2551c622023-10-30T06:04:20ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012665326551Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface meltingB.S. Cao0C.L. Wu1L. Wang2S. Zhang3C.H. Zhang4X.Y. Sun5School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, PR ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, PR China; Corresponding author.Shenyang Equipment Manufacturing Engineering School, Shenyang, Liaoning, PR ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, PR ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, PR China; Corresponding author.Shenyang Dalu Laser Technology CO., LTD, Shenyang 110136, Liaoning, PR ChinaDifferent from additive manufacturing and subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) is applied to 304 stainless steel (304SS) by laser surface melting (LSM) at four energy density (51 J/mm2, 44 J/mm2, 39 J/mm2, 37 J/mm2), aiming at improving the resistance to corrosion and cavitation erosion without any addition of precious metals. The experimental results show that the microstructure presents the transformation from plane crystal → columnar crystal → equiaxed crystal from interface to top surface. All the samples exhibit austenite+martensite+Cr23C6, and the martensite content is increased from 9.3% to 40.8% with the energy density decreasing after iso-material manufacturing. In addition, low angle grain boundary is increased, and nano-mechanical properties also show an increasing trend. The decreasing of energy density also enhances the residual tensile stress of the melting layer. The sample obtained at energy density of 51 J/mm2 displays the highest corrosion resistance in 3.5 wt% NaCl solution, which can be attributed to its low galvanic corrosion degree and small residual tensile stress. The sample obtained at energy density of 39 J/mm2 exhibits the highest cavitation erosion resistance (Re) and its passivation film displays better self-repairing and re-passivation ability as indicated by synergistic cavitation erosion-corrosion behavior. The high cavitation erosion resistance can be attributed to the proper compromise of the constituent phases and higher self-repairing of the passivation film for the melting layer. Moreover, the 304 stainless steel prepared in this study exhibits a high or comparable corrosion and cavitation erosion resistance in comparison with the samples prepared by other fabrication method reported previously.http://www.sciencedirect.com/science/article/pii/S223878542302152XResidual stressPhase constituentIso-material manufacturingCorrosionCavitation erosion |
| spellingShingle | B.S. Cao C.L. Wu L. Wang S. Zhang C.H. Zhang X.Y. Sun Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting Journal of Materials Research and Technology Residual stress Phase constituent Iso-material manufacturing Corrosion Cavitation erosion |
| title | Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting |
| title_full | Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting |
| title_fullStr | Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting |
| title_full_unstemmed | Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting |
| title_short | Effect of residual stress and phase constituents on corrosion-cavitation erosion behavior of 304 stainless steel by iso-material manufacturing of laser surface melting |
| title_sort | effect of residual stress and phase constituents on corrosion cavitation erosion behavior of 304 stainless steel by iso material manufacturing of laser surface melting |
| topic | Residual stress Phase constituent Iso-material manufacturing Corrosion Cavitation erosion |
| url | http://www.sciencedirect.com/science/article/pii/S223878542302152X |
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