Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition
Due to its low melting point and high hardness, Ni60 (Ni–Cr–B–Si) alloy is widely used as surface cladding material for mould steel. In present study, Ni60 alloy thin-walled samples were fabricated using laser metal deposition (LMD) technology on H13 steel substrate which is usually used as mould ma...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab69c7 |
| _version_ | 1797747051757305856 |
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| author | Wenquan Wang Liang Liu Xinge Zhang Zimu Shi Yingtao Tian Jixing Lin |
| author_facet | Wenquan Wang Liang Liu Xinge Zhang Zimu Shi Yingtao Tian Jixing Lin |
| author_sort | Wenquan Wang |
| collection | DOAJ |
| description | Due to its low melting point and high hardness, Ni60 (Ni–Cr–B–Si) alloy is widely used as surface cladding material for mould steel. In present study, Ni60 alloy thin-walled samples were fabricated using laser metal deposition (LMD) technology on H13 steel substrate which is usually used as mould material. The microstructure and mechanical properties (microhardness and wear resistance) of LMD Ni60 alloy were investigated. The results show that the LMD Ni60 alloy sample is mainly composed of Ni, Ni _3 Fe, Ni _3 B, Ni _3 Si, CrB, Cr _5 B _3 and Cr _7 C _3 . The microstructures of the sample mainly include Ni–B–Si eutectics, Ni columnar dendrites and precipitates (boride and carbide). In the region with faster cooling rate of the sample, eutectics take a larger proportion, meanwhile precipitates are refined and dispersed uniformly. So hardness of the region can reach 950 HV. In the interlayer region, eutectics decrease while Ni dendrites increase because of the influence of remelting. The hardness of this region is about 750 HV. Wear resistance tests indicated that the wear resistance of LMD Ni60 alloy is about 9 times of H13 steel. |
| first_indexed | 2024-03-12T15:45:38Z |
| format | Article |
| id | doaj.art-02cdf652e17640e59f400353805c849b |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:45:38Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-02cdf652e17640e59f400353805c849b2023-08-09T15:26:07ZengIOP PublishingMaterials Research Express2053-15912020-01-017101656910.1088/2053-1591/ab69c7Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal depositionWenquan Wang0Liang Liu1https://orcid.org/0000-0002-6183-1671Xinge Zhang2Zimu Shi3Yingtao Tian4Jixing Lin5College of Materials Science and Engineering, Jilin University , Changchun 130025, People’s Republic of ChinaCollege of Materials Science and Engineering, Jilin University , Changchun 130025, People’s Republic of ChinaCollege of Materials Science and Engineering, Jilin University , Changchun 130025, People’s Republic of ChinaKey Laboratory of Materials Physics, Institute of Solid Physics, Chinese Academy of Science, Hefei 230031, People’s Republic of ChinaDepartment of Engineering, Lancaster University , Bailrigg, Lancaster LA1 4YW, United KingdomDepartment of Material Engineering, Zhejiang Industry & Trade Vocational College, Wenzhou 325003, People’s Republic of ChinaDue to its low melting point and high hardness, Ni60 (Ni–Cr–B–Si) alloy is widely used as surface cladding material for mould steel. In present study, Ni60 alloy thin-walled samples were fabricated using laser metal deposition (LMD) technology on H13 steel substrate which is usually used as mould material. The microstructure and mechanical properties (microhardness and wear resistance) of LMD Ni60 alloy were investigated. The results show that the LMD Ni60 alloy sample is mainly composed of Ni, Ni _3 Fe, Ni _3 B, Ni _3 Si, CrB, Cr _5 B _3 and Cr _7 C _3 . The microstructures of the sample mainly include Ni–B–Si eutectics, Ni columnar dendrites and precipitates (boride and carbide). In the region with faster cooling rate of the sample, eutectics take a larger proportion, meanwhile precipitates are refined and dispersed uniformly. So hardness of the region can reach 950 HV. In the interlayer region, eutectics decrease while Ni dendrites increase because of the influence of remelting. The hardness of this region is about 750 HV. Wear resistance tests indicated that the wear resistance of LMD Ni60 alloy is about 9 times of H13 steel.https://doi.org/10.1088/2053-1591/ab69c7laser metal depositionNi60Ni–Cr–B–Si alloy3D printingmicrostructuremechanical property |
| spellingShingle | Wenquan Wang Liang Liu Xinge Zhang Zimu Shi Yingtao Tian Jixing Lin Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition Materials Research Express laser metal deposition Ni60 Ni–Cr–B–Si alloy 3D printing microstructure mechanical property |
| title | Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition |
| title_full | Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition |
| title_fullStr | Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition |
| title_full_unstemmed | Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition |
| title_short | Microstructures and mechanical properties of Ni60 alloy fabricated by laser metal deposition |
| title_sort | microstructures and mechanical properties of ni60 alloy fabricated by laser metal deposition |
| topic | laser metal deposition Ni60 Ni–Cr–B–Si alloy 3D printing microstructure mechanical property |
| url | https://doi.org/10.1088/2053-1591/ab69c7 |
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