Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion
Application of the 316 L stainless steel (SS) is limited by its relatively low wear resistance, insufficient strength, and poor corrosion resistance in special environments. To this end, effects of Mo particles addition on the microstructure, mechanical properties, and corrosion resistance of the la...
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/13/4827 |
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| author | Bolin Li Shuai Zhang Shenghai Wang Li Wang Yinchuan He Yaning Cui Dan Liu Mingxu Wang |
| author_facet | Bolin Li Shuai Zhang Shenghai Wang Li Wang Yinchuan He Yaning Cui Dan Liu Mingxu Wang |
| author_sort | Bolin Li |
| collection | DOAJ |
| description | Application of the 316 L stainless steel (SS) is limited by its relatively low wear resistance, insufficient strength, and poor corrosion resistance in special environments. To this end, effects of Mo particles addition on the microstructure, mechanical properties, and corrosion resistance of the laser powder bed fusion (LPBF) 316 L SS are investigated in this study. The results show that the addition of Mo particles from 0 wt.% to 10 wt.% can modify the crystal orientation and improve the strength, wear resistance, and corrosion resistance of LPBF 316 L SSs. Particularly, the LPBF 316 L SS forms a biphasic structure with a similar ratio of α-Fe to γ-Fe with 5 wt.% Mo addition. As a result, the corresponding samples possess both the excellent toughness of austenitic SSs and the high strength and corrosion resistance of ferrite SSs, which reaches a high tensile strength of about 830 MPa, together with a low friction coefficient of 0.421 μ. Since the Mo particles addition is beneficial to increase the content of Cr<sub>2</sub>O<sub>3</sub> on the samples surface from 13.48% to 22.68%, the corrosion current density of 316 L SS decreases by two orders of magnitude from 569 nA to 6 nA, while the mechanical properties remain favorable. This study is expected to serve as a reference for the preparation of LPBF SSs with excellent integrated performance. |
| first_indexed | 2024-03-11T01:35:20Z |
| format | Article |
| id | doaj.art-8cc56d7efac947839b2364a6ddd77610 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T01:35:20Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-8cc56d7efac947839b2364a6ddd776102023-11-18T17:00:24ZengMDPI AGMaterials1996-19442023-07-011613482710.3390/ma16134827Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed FusionBolin Li0Shuai Zhang1Shenghai Wang2Li Wang3Yinchuan He4Yaning Cui5Dan Liu6Mingxu Wang7School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaWeihai Wanfeng Magnesium Industry Science and Technology Development Co., Ltd., Weihai 263200, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaApplication of the 316 L stainless steel (SS) is limited by its relatively low wear resistance, insufficient strength, and poor corrosion resistance in special environments. To this end, effects of Mo particles addition on the microstructure, mechanical properties, and corrosion resistance of the laser powder bed fusion (LPBF) 316 L SS are investigated in this study. The results show that the addition of Mo particles from 0 wt.% to 10 wt.% can modify the crystal orientation and improve the strength, wear resistance, and corrosion resistance of LPBF 316 L SSs. Particularly, the LPBF 316 L SS forms a biphasic structure with a similar ratio of α-Fe to γ-Fe with 5 wt.% Mo addition. As a result, the corresponding samples possess both the excellent toughness of austenitic SSs and the high strength and corrosion resistance of ferrite SSs, which reaches a high tensile strength of about 830 MPa, together with a low friction coefficient of 0.421 μ. Since the Mo particles addition is beneficial to increase the content of Cr<sub>2</sub>O<sub>3</sub> on the samples surface from 13.48% to 22.68%, the corrosion current density of 316 L SS decreases by two orders of magnitude from 569 nA to 6 nA, while the mechanical properties remain favorable. This study is expected to serve as a reference for the preparation of LPBF SSs with excellent integrated performance.https://www.mdpi.com/1996-1944/16/13/4827316 L stainless steellaser powder bed fusionmechanical propertiescorrosion resistance |
| spellingShingle | Bolin Li Shuai Zhang Shenghai Wang Li Wang Yinchuan He Yaning Cui Dan Liu Mingxu Wang Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion Materials 316 L stainless steel laser powder bed fusion mechanical properties corrosion resistance |
| title | Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion |
| title_full | Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion |
| title_fullStr | Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion |
| title_full_unstemmed | Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion |
| title_short | Effects of Mo Particles Addition on the Microstructure and Properties of 316 L Stainless Steels Fabricated by Laser Powder Bed Fusion |
| title_sort | effects of mo particles addition on the microstructure and properties of 316 l stainless steels fabricated by laser powder bed fusion |
| topic | 316 L stainless steel laser powder bed fusion mechanical properties corrosion resistance |
| url | https://www.mdpi.com/1996-1944/16/13/4827 |
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