Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding
To enhance the hardness and wear resistance of Q235 substrate, an AlCoCrFeNi high-entropy alloy (HEA) coating was deposited onto the substrate surfaces by laser cladding. However, the performance of the AlCoCrFeNi HEA coating did not meet the desired requirements. Consequently, AlCoCrFeNiTix (x = 0,...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029260 |
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| author | Kun Yue Xiaoqin Yang Lin Wang Liji Su Quan Xu Zhe Xu Chunlong Cheng Yeqing Wang Zhijun Wang Zheng Chen |
| author_facet | Kun Yue Xiaoqin Yang Lin Wang Liji Su Quan Xu Zhe Xu Chunlong Cheng Yeqing Wang Zhijun Wang Zheng Chen |
| author_sort | Kun Yue |
| collection | DOAJ |
| description | To enhance the hardness and wear resistance of Q235 substrate, an AlCoCrFeNi high-entropy alloy (HEA) coating was deposited onto the substrate surfaces by laser cladding. However, the performance of the AlCoCrFeNi HEA coating did not meet the desired requirements. Consequently, AlCoCrFeNiTix (x = 0, 0.25, 0.5, 0.75, and 1) HEA coatings were prepared by laser cladding to further improve the coating hardness and wear resistance. The influence of Ti content on the microstructure, hardness, and wear resistance of the coatings was studied. The results showed that Ti promoted the formation of a body-centered cubic (B2) phase, transforming the coating structure into a typical dendritic (DR)–inter-dendritic (ID) structure. The AlCoCrFeNiTi0.25 coating consisted of BCC1 phase and B2 phases. As the Ti content increases, Laves phases emerged in AlCoCrFeNiTix HEA coatings. Spinodal decomposition led to pronounced phase separation in the coating, with elongated nanoparticles of the BCC1 phase precipitating in the DR region and round block-like nanoparticles of the B2 phase precipitating in the ID region. The B2 and Laves phases strengthened the coatings and improved their hardness and wear resistance. The hardness of AlCoCrFeNiTi1 coating reached 828.35 HV0.1, which was 56.29 times higher than that of the AlCoCrFeNi coating, while its wear resistance was 80.7 times greater. Therefore, the addition of Ti effectively improved the hardness and wear resistance of the AlCoCrFeNi HEA coating. |
| format | Article |
| id | doaj-art-7e62eff28dd74b0abf9e4add749f1971 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-7e62eff28dd74b0abf9e4add749f19712025-01-19T06:25:33ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013411201129Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser claddingKun Yue0Xiaoqin Yang1Lin Wang2Liji Su3Quan Xu4Zhe Xu5Chunlong Cheng6Yeqing Wang7Zhijun Wang8Zheng Chen9School of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China; Corresponding author.School of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaSchool of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China; Faculty of Engineering, China University of Petroleum-Beijing at Karamay, Karamay, Xinjiang 834000, China; Corresponding author. School of Material Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China.To enhance the hardness and wear resistance of Q235 substrate, an AlCoCrFeNi high-entropy alloy (HEA) coating was deposited onto the substrate surfaces by laser cladding. However, the performance of the AlCoCrFeNi HEA coating did not meet the desired requirements. Consequently, AlCoCrFeNiTix (x = 0, 0.25, 0.5, 0.75, and 1) HEA coatings were prepared by laser cladding to further improve the coating hardness and wear resistance. The influence of Ti content on the microstructure, hardness, and wear resistance of the coatings was studied. The results showed that Ti promoted the formation of a body-centered cubic (B2) phase, transforming the coating structure into a typical dendritic (DR)–inter-dendritic (ID) structure. The AlCoCrFeNiTi0.25 coating consisted of BCC1 phase and B2 phases. As the Ti content increases, Laves phases emerged in AlCoCrFeNiTix HEA coatings. Spinodal decomposition led to pronounced phase separation in the coating, with elongated nanoparticles of the BCC1 phase precipitating in the DR region and round block-like nanoparticles of the B2 phase precipitating in the ID region. The B2 and Laves phases strengthened the coatings and improved their hardness and wear resistance. The hardness of AlCoCrFeNiTi1 coating reached 828.35 HV0.1, which was 56.29 times higher than that of the AlCoCrFeNi coating, while its wear resistance was 80.7 times greater. Therefore, the addition of Ti effectively improved the hardness and wear resistance of the AlCoCrFeNi HEA coating.http://www.sciencedirect.com/science/article/pii/S2238785424029260Laser claddingSpinodal decompositionHigh entropy alloysTi contentWear resistance |
| spellingShingle | Kun Yue Xiaoqin Yang Lin Wang Liji Su Quan Xu Zhe Xu Chunlong Cheng Yeqing Wang Zhijun Wang Zheng Chen Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding Journal of Materials Research and Technology Laser cladding Spinodal decomposition High entropy alloys Ti content Wear resistance |
| title | Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding |
| title_full | Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding |
| title_fullStr | Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding |
| title_full_unstemmed | Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding |
| title_short | Effect of Ti content on spinodal decomposed microstructure and properties of AlCoCrFeNiTix high-entropy alloy coatings prepared by laser cladding |
| title_sort | effect of ti content on spinodal decomposed microstructure and properties of alcocrfenitix high entropy alloy coatings prepared by laser cladding |
| topic | Laser cladding Spinodal decomposition High entropy alloys Ti content Wear resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029260 |
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