Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy
In this paper, Fe-Cr-C-N-Al-Y wear-resistant surfacing alloy was prepared by open-arc surfacing with self-shielded flux-cored wire. The wear properties of the surfacing alloy were analyzed using an MLS-23 rubber wheel wet sand wear tester. The phase composition and microstructure of the surfacing al...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/7/1023 |
| _version_ | 1797589756980232192 |
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| author | Xingyu Ai Zhengjun Liu Zongxuan Zou |
| author_facet | Xingyu Ai Zhengjun Liu Zongxuan Zou |
| author_sort | Xingyu Ai |
| collection | DOAJ |
| description | In this paper, Fe-Cr-C-N-Al-Y wear-resistant surfacing alloy was prepared by open-arc surfacing with self-shielded flux-cored wire. The wear properties of the surfacing alloy were analyzed using an MLS-23 rubber wheel wet sand wear tester. The phase composition and microstructure of the surfacing alloy were analyzed using X-ray diffraction, scanning electron microscope, electron backscatter diffraction and transmission electron microscope; the strengthening mechanism and wear mechanism of the alloy were discussed. The results show that the microstructure of Fe-Cr-C-N-Al-Y surfacing alloy is composed of M + γ-Fe + M<sub>7</sub>C<sub>3</sub> + AlN. When the content of nano-Y<sub>2</sub>O<sub>3</sub> is 0.456 wt.%, the formability of the surfacing alloy is the best, and the wetting angle is the smallest, which is 50.8°; AlN and M<sub>7</sub>C<sub>3</sub> precipitate the most, and the microstructure grain is the smallest. At this time, the hardness value of the surfacing alloy is up to 62.3 HRC, which is 11.8% higher than that of the unmodified surfacing alloy. The minimum wear weight loss is 0.125 g, and the wear resistance is increased by 41.86%. The wear mechanism of the surfacing alloy is mainly a plastic deformation mechanism, and the material removal processes are microcutting and furrow wear. This study provides theoretical guidance for refining primary carbides and improving the wear resistance of high chromium cast iron. |
| first_indexed | 2024-03-11T01:11:00Z |
| format | Article |
| id | doaj.art-b475078e51cf4421b56d26df47c22dff |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T01:11:00Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-b475078e51cf4421b56d26df47c22dff2023-11-18T18:53:19ZengMDPI AGCrystals2073-43522023-06-01137102310.3390/cryst13071023Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing AlloyXingyu Ai0Zhengjun Liu1Zongxuan Zou2Department of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaDepartment of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaDepartment of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaIn this paper, Fe-Cr-C-N-Al-Y wear-resistant surfacing alloy was prepared by open-arc surfacing with self-shielded flux-cored wire. The wear properties of the surfacing alloy were analyzed using an MLS-23 rubber wheel wet sand wear tester. The phase composition and microstructure of the surfacing alloy were analyzed using X-ray diffraction, scanning electron microscope, electron backscatter diffraction and transmission electron microscope; the strengthening mechanism and wear mechanism of the alloy were discussed. The results show that the microstructure of Fe-Cr-C-N-Al-Y surfacing alloy is composed of M + γ-Fe + M<sub>7</sub>C<sub>3</sub> + AlN. When the content of nano-Y<sub>2</sub>O<sub>3</sub> is 0.456 wt.%, the formability of the surfacing alloy is the best, and the wetting angle is the smallest, which is 50.8°; AlN and M<sub>7</sub>C<sub>3</sub> precipitate the most, and the microstructure grain is the smallest. At this time, the hardness value of the surfacing alloy is up to 62.3 HRC, which is 11.8% higher than that of the unmodified surfacing alloy. The minimum wear weight loss is 0.125 g, and the wear resistance is increased by 41.86%. The wear mechanism of the surfacing alloy is mainly a plastic deformation mechanism, and the material removal processes are microcutting and furrow wear. This study provides theoretical guidance for refining primary carbides and improving the wear resistance of high chromium cast iron.https://www.mdpi.com/2073-4352/13/7/1023Fe-Cr-Csurfacing alloysnanometer rare earthhardening phaseabrasive wear |
| spellingShingle | Xingyu Ai Zhengjun Liu Zongxuan Zou Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy Crystals Fe-Cr-C surfacing alloys nanometer rare earth hardening phase abrasive wear |
| title | Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy |
| title_full | Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy |
| title_fullStr | Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy |
| title_full_unstemmed | Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy |
| title_short | Effect of Nano-Y<sub>2</sub>O<sub>3</sub> on the Microstructure and Properties of Fe-Cr-C-N-Al Surfacing Alloy |
| title_sort | effect of nano y sub 2 sub o sub 3 sub on the microstructure and properties of fe cr c n al surfacing alloy |
| topic | Fe-Cr-C surfacing alloys nanometer rare earth hardening phase abrasive wear |
| url | https://www.mdpi.com/2073-4352/13/7/1023 |
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