Inclusion engineering in Co-based duplex entropic alloys
Co-based duplex entropic alloy is designed very recently to replace pure Co as a major component of the binder phase for cemented carbide cutting tools. This work aims to provide a fundamental study of oxide inclusion characteristics in the duplex fcc + hcp Co-based entropic alloys. It is found that...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521006523 |
| _version_ | 1818825759130648576 |
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| author | Wei Wang Yong Wang Wangzhong Mu Joo Hyun Park Hui Kong Sohei Sukenaga Hiroyuki Shibata Henrik Larsson Huahai Mao |
| author_facet | Wei Wang Yong Wang Wangzhong Mu Joo Hyun Park Hui Kong Sohei Sukenaga Hiroyuki Shibata Henrik Larsson Huahai Mao |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | Co-based duplex entropic alloy is designed very recently to replace pure Co as a major component of the binder phase for cemented carbide cutting tools. This work aims to provide a fundamental study of oxide inclusion characteristics in the duplex fcc + hcp Co-based entropic alloys. It is found that the Co85−xCrxFe7.5Ni7.5 (x = 15, 30 at.%) alloys hold the highest liquidus (Tliq) and solidus (Tsol) temperatures, compare with the Co85−xCrxMn7.5Ni7.5 (x = 15, 30 at.%) and Co77.5−xCrxFe7.5Mn7.5Ni7.5 (x = 15, 30 at.%) alloys. For each grade, the increasing Cr content leads to a decrease of Tsol and Tliq temperatures. It is also noted that there is an approximate 100 °C of undercooling exists in each grade during the solidification. The stable oxide inclusion in the Co85−xCrxMn7.5Ni7.5 and Co77.5−xCrxFe7.5Mn7.5Ni7.5 alloys is the MnCr2O4 type, while Cr2O3 is the main stable inclusion in the Co85−xCrxFe7.5Ni7.5 alloy. Furthermore, the size range of the MnCr2O4 particles is larger than that of Cr2O3. The theoretical calculation shows that MnCr2O4 has a higher coagulation coefficient than Cr2O3 does. This is due to the influence of the thermo-physical parameters, i.e. the interfacial energy between the oxide and the alloy and the viscosity of liquid alloy. The theoretical calculation fits well with the experimental findings. |
| first_indexed | 2024-12-19T00:16:52Z |
| format | Article |
| id | doaj.art-3210af231daf449d9039154ec6fe33fe |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-19T00:16:52Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-3210af231daf449d9039154ec6fe33fe2022-12-21T20:45:45ZengElsevierMaterials & Design0264-12752021-11-01210110097Inclusion engineering in Co-based duplex entropic alloysWei Wang0Yong Wang1Wangzhong Mu2Joo Hyun Park3Hui Kong4Sohei Sukenaga5Hiroyuki Shibata6Henrik Larsson7Huahai Mao8Department of Chemical Engineering, Northeast Electric Power University, Jilin 132012, China; Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of KoreaDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China; Corresponding author at: Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of KoreaSchool of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, ChinaInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, JapanInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, JapanDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Thermo-Calc Software, Råsundav. 18, SE-16767 Solna, SwedenDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Thermo-Calc Software, Råsundav. 18, SE-16767 Solna, SwedenCo-based duplex entropic alloy is designed very recently to replace pure Co as a major component of the binder phase for cemented carbide cutting tools. This work aims to provide a fundamental study of oxide inclusion characteristics in the duplex fcc + hcp Co-based entropic alloys. It is found that the Co85−xCrxFe7.5Ni7.5 (x = 15, 30 at.%) alloys hold the highest liquidus (Tliq) and solidus (Tsol) temperatures, compare with the Co85−xCrxMn7.5Ni7.5 (x = 15, 30 at.%) and Co77.5−xCrxFe7.5Mn7.5Ni7.5 (x = 15, 30 at.%) alloys. For each grade, the increasing Cr content leads to a decrease of Tsol and Tliq temperatures. It is also noted that there is an approximate 100 °C of undercooling exists in each grade during the solidification. The stable oxide inclusion in the Co85−xCrxMn7.5Ni7.5 and Co77.5−xCrxFe7.5Mn7.5Ni7.5 alloys is the MnCr2O4 type, while Cr2O3 is the main stable inclusion in the Co85−xCrxFe7.5Ni7.5 alloy. Furthermore, the size range of the MnCr2O4 particles is larger than that of Cr2O3. The theoretical calculation shows that MnCr2O4 has a higher coagulation coefficient than Cr2O3 does. This is due to the influence of the thermo-physical parameters, i.e. the interfacial energy between the oxide and the alloy and the viscosity of liquid alloy. The theoretical calculation fits well with the experimental findings.http://www.sciencedirect.com/science/article/pii/S0264127521006523Duplex entropic alloysCo-based alloysNon-metallic inclusionHigh temperature phase equilibriaAgglomeration |
| spellingShingle | Wei Wang Yong Wang Wangzhong Mu Joo Hyun Park Hui Kong Sohei Sukenaga Hiroyuki Shibata Henrik Larsson Huahai Mao Inclusion engineering in Co-based duplex entropic alloys Materials & Design Duplex entropic alloys Co-based alloys Non-metallic inclusion High temperature phase equilibria Agglomeration |
| title | Inclusion engineering in Co-based duplex entropic alloys |
| title_full | Inclusion engineering in Co-based duplex entropic alloys |
| title_fullStr | Inclusion engineering in Co-based duplex entropic alloys |
| title_full_unstemmed | Inclusion engineering in Co-based duplex entropic alloys |
| title_short | Inclusion engineering in Co-based duplex entropic alloys |
| title_sort | inclusion engineering in co based duplex entropic alloys |
| topic | Duplex entropic alloys Co-based alloys Non-metallic inclusion High temperature phase equilibria Agglomeration |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521006523 |
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