Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing
In this study, we developed composite Fe-Cr-V-C coatings by plasma transferred-arc (PTA) powder surfacing on a 42CrMo steel substrate. The effects of arc current and ion gas flow rate on the coatings’ microstructure, hardness, and bonding performance were investigated. During the surfacing process,...
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/14/5059 |
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| author | Xin Zhang Yong Liu Huichao Cheng Kun Li Cheng Qian Wei Li |
| author_facet | Xin Zhang Yong Liu Huichao Cheng Kun Li Cheng Qian Wei Li |
| author_sort | Xin Zhang |
| collection | DOAJ |
| description | In this study, we developed composite Fe-Cr-V-C coatings by plasma transferred-arc (PTA) powder surfacing on a 42CrMo steel substrate. The effects of arc current and ion gas flow rate on the coatings’ microstructure, hardness, and bonding performance were investigated. During the surfacing process, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi mathvariant="normal">V</mi></mrow><mrow><mi mathvariant="normal">x</mi></mrow></msub><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mi mathvariant="normal">y</mi></mrow></msub><mo>,</mo><msub><mrow><msub><mrow><mi mathvariant="normal">M</mi></mrow><mrow><mn>7</mn></mrow></msub><mi mathvariant="normal">C</mi></mrow><mrow><mn>3</mn></mrow></msub><mfenced separators="|"><mrow><mi mathvariant="normal">M</mi><mo>=</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>,</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">r</mi></mrow></mfenced></mrow></semantics></math></inline-formula> and other hard phases are in-situ generated throughout the entire PTA powder surfacing. These phases are uniformly distributed in the Fe matrix through precipitation and dispersion strengthening, yielding a surface hardness of up to 64.1 HRC. Also, the bonding performance between the substrate and coatings was evaluated by measuring the tensile strength, revealing that strong metallurgical bonds are formed, reaching a strength greater than 811 MPa. |
| first_indexed | 2024-03-11T00:52:47Z |
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| id | doaj.art-5544cf77f4314fd2b7851f2a66be5457 |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:52:47Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5544cf77f4314fd2b7851f2a66be54572023-11-18T20:17:22ZengMDPI AGMaterials1996-19442023-07-011614505910.3390/ma16145059Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder SurfacingXin Zhang0Yong Liu1Huichao Cheng2Kun Li3Cheng Qian4Wei Li5State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaIn this study, we developed composite Fe-Cr-V-C coatings by plasma transferred-arc (PTA) powder surfacing on a 42CrMo steel substrate. The effects of arc current and ion gas flow rate on the coatings’ microstructure, hardness, and bonding performance were investigated. During the surfacing process, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi mathvariant="normal">V</mi></mrow><mrow><mi mathvariant="normal">x</mi></mrow></msub><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mi mathvariant="normal">y</mi></mrow></msub><mo>,</mo><msub><mrow><msub><mrow><mi mathvariant="normal">M</mi></mrow><mrow><mn>7</mn></mrow></msub><mi mathvariant="normal">C</mi></mrow><mrow><mn>3</mn></mrow></msub><mfenced separators="|"><mrow><mi mathvariant="normal">M</mi><mo>=</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>,</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">r</mi></mrow></mfenced></mrow></semantics></math></inline-formula> and other hard phases are in-situ generated throughout the entire PTA powder surfacing. These phases are uniformly distributed in the Fe matrix through precipitation and dispersion strengthening, yielding a surface hardness of up to 64.1 HRC. Also, the bonding performance between the substrate and coatings was evaluated by measuring the tensile strength, revealing that strong metallurgical bonds are formed, reaching a strength greater than 811 MPa.https://www.mdpi.com/1996-1944/16/14/5059plasma transferred-arc powder surfacingiron-based composite powderarc currention gas flow rate |
| spellingShingle | Xin Zhang Yong Liu Huichao Cheng Kun Li Cheng Qian Wei Li Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing Materials plasma transferred-arc powder surfacing iron-based composite powder arc current ion gas flow rate |
| title | Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing |
| title_full | Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing |
| title_fullStr | Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing |
| title_full_unstemmed | Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing |
| title_short | Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing |
| title_sort | composite fe cr v c coatings prepared by plasma transferred arc powder surfacing |
| topic | plasma transferred-arc powder surfacing iron-based composite powder arc current ion gas flow rate |
| url | https://www.mdpi.com/1996-1944/16/14/5059 |
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