Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel
WC/Ni reinforced layers with different Y<sub>2</sub>O<sub>3</sub> contents were fabricated on the surface of 38CrMoAl steel by laser alloying. The influence of Y<sub>2</sub>O<sub>3</sub> content on the phase composition, microstructure, microhardness a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2017-03-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2017/V45/I3/80 |
| _version_ | 1797964838355337216 |
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| author | HAN Li-ying WANG Cun-shan FENG Qiao |
| author_facet | HAN Li-ying WANG Cun-shan FENG Qiao |
| author_sort | HAN Li-ying |
| collection | DOAJ |
| description | WC/Ni reinforced layers with different Y<sub>2</sub>O<sub>3</sub> contents were fabricated on the surface of 38CrMoAl steel by laser alloying. The influence of Y<sub>2</sub>O<sub>3</sub> content on the phase composition, microstructure, microhardness and tribological performance of the alloying layers were investigated via X-ray diffraction, scanning electron microscopy, electron microprobe, Vickers hardness tester and friction wear testing machine. The results show that the alloying layers with different Y<sub>2</sub>O<sub>3</sub> contents all consist of γ-(Fe, Ni), martensite matrix, M<sub>3</sub>C, and WC phases. Nano-WC particles are mainly distributed between the dendrites in the top of the alloying layers, while the micro-scale WC particles with epitaxial growth layers are observed in the bottom of alloying layers. With the increase of Y<sub>2</sub>O<sub>3</sub> content, the solidified microstructure with hypoeutectic morphology gradually refines, the number of the γ-(Fe, Ni) and M<sub>3</sub>C increases, and the number of martensite matrix decreases slightly. When Y<sub>2</sub>O<sub>3 </sub>content(mass fraction, the same below) is more than 1.0%, the solidified microstructure slightly coarsens. With the increase of Y<sub>2</sub>O<sub>3</sub> content, the hardness of the alloying layers increases first and then decreases; the friction coefficient and the wear mass loss exhibit the opposite trend. When the Y<sub>2</sub>O<sub>3</sub> content is 1.0%, the hardness of the alloying layer is the highest, which is 2.4 times of hardness of matrix; the friction coefficient and the wear mass loss are the lowest, which are 17% and 8.9% of the matrix respectively. |
| first_indexed | 2024-04-11T01:51:06Z |
| format | Article |
| id | doaj.art-92ebd6a0653c45ae9a0fee9644ab8c3c |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:51:06Z |
| publishDate | 2017-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-92ebd6a0653c45ae9a0fee9644ab8c3c2023-01-03T06:26:55ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812017-03-01453808710.11868/j.issn.1001-4381.2015.000926201703000926Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl SteelHAN Li-ying0WANG Cun-shan1FENG Qiao2Key Laboratory of Materials Modification by Laser, Ion and Electron Beams(Ministry of Education), Dalian University of Technology, Dalian 116024, Liaoning, ChinaKey Laboratory of Materials Modification by Laser, Ion and Electron Beams(Ministry of Education), Dalian University of Technology, Dalian 116024, Liaoning, ChinaKey Laboratory of Materials Modification by Laser, Ion and Electron Beams(Ministry of Education), Dalian University of Technology, Dalian 116024, Liaoning, ChinaWC/Ni reinforced layers with different Y<sub>2</sub>O<sub>3</sub> contents were fabricated on the surface of 38CrMoAl steel by laser alloying. The influence of Y<sub>2</sub>O<sub>3</sub> content on the phase composition, microstructure, microhardness and tribological performance of the alloying layers were investigated via X-ray diffraction, scanning electron microscopy, electron microprobe, Vickers hardness tester and friction wear testing machine. The results show that the alloying layers with different Y<sub>2</sub>O<sub>3</sub> contents all consist of γ-(Fe, Ni), martensite matrix, M<sub>3</sub>C, and WC phases. Nano-WC particles are mainly distributed between the dendrites in the top of the alloying layers, while the micro-scale WC particles with epitaxial growth layers are observed in the bottom of alloying layers. With the increase of Y<sub>2</sub>O<sub>3</sub> content, the solidified microstructure with hypoeutectic morphology gradually refines, the number of the γ-(Fe, Ni) and M<sub>3</sub>C increases, and the number of martensite matrix decreases slightly. When Y<sub>2</sub>O<sub>3 </sub>content(mass fraction, the same below) is more than 1.0%, the solidified microstructure slightly coarsens. With the increase of Y<sub>2</sub>O<sub>3</sub> content, the hardness of the alloying layers increases first and then decreases; the friction coefficient and the wear mass loss exhibit the opposite trend. When the Y<sub>2</sub>O<sub>3</sub> content is 1.0%, the hardness of the alloying layer is the highest, which is 2.4 times of hardness of matrix; the friction coefficient and the wear mass loss are the lowest, which are 17% and 8.9% of the matrix respectively.http://jme.biam.ac.cn/CN/Y2017/V45/I3/80laser alloyingwc/niy<sub>2</sub>o<sub>3</sub>microstructureproperty |
| spellingShingle | HAN Li-ying WANG Cun-shan FENG Qiao Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel Cailiao gongcheng laser alloying wc/ni y<sub>2</sub>o<sub>3</sub> microstructure property |
| title | Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel |
| title_full | Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel |
| title_fullStr | Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel |
| title_full_unstemmed | Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel |
| title_short | Influence of Y<sub>2</sub>O<sub>3</sub> Content on Microstructure and Properties of Laser Alloying WC/Ni Metal Ceramic on 38CrMoAl Steel |
| title_sort | influence of y sub 2 sub o sub 3 sub content on microstructure and properties of laser alloying wc ni metal ceramic on 38crmoal steel |
| topic | laser alloying wc/ni y<sub>2</sub>o<sub>3</sub> microstructure property |
| url | http://jme.biam.ac.cn/CN/Y2017/V45/I3/80 |
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