Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system
Phase equilibria at 900°C and the liquidus projection in the Ni-rich corner of the Cu-Ni-Ti ternary system were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and differential scanning calorimetry (DSC) on the annealed and as-cast all...
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University of Belgrade, Technical Faculty, Bor
2018-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800009J.pdf |
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| author | Jin B. Lu X. Liu S. Huang D. Du Y. |
| author_facet | Jin B. Lu X. Liu S. Huang D. Du Y. |
| author_sort | Jin B. |
| collection | DOAJ |
| description | Phase equilibria at 900°C and the liquidus projection in the Ni-rich corner of the Cu-Ni-Ti ternary system were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and differential scanning calorimetry (DSC) on the annealed and as-cast alloys. For the isothermal section at 900 °C, the hightemperature ternary compound (τ5) reported in the literature was not observed but the corresponding low-temperature compound (τ6) was identified to be stable at this temperature. For the liquidus projection, the primary phase τ4 was experimentally determined for the first time, and the related solidification paths were identified through the experimental data on the as-cast alloys. One solid-state invariant reaction, NiTi + τ4 → τ1 + Ni3Ti at 1098.3°C and two ternary eutectic reactions, L → τ1 + τ4 + NiTi at 1126°C and L → τ1 + τ6 + fcc(Cu,Ni) at 1069.5°C were detected. Scheil reaction scheme was also presented accordingly. All obtained experimental results will provide reliable information for further thermodynamic optimization of the Cu-Ni-Ti ternary system. |
| format | Article |
| id | doaj-art-c265386c834649c68f901d9ff10cf93f |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-c265386c834649c68f901d9ff10cf93f2025-02-02T11:20:01ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752018-01-0154220922310.2298/JMMB180209009J1450-53391800009JExperimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti systemJin B.0Lu X.1Liu S.2Huang D.3Du Y.4Central South University, State Key Laboratory of Powder Metallurgy, Changsha, ChinaUniversity of Connecticut, Department of Materials Science and Engineering & Institute of Materials Science, Storrs, USACentral South University, State Key Laboratory of Powder Metallurgy, Changsha, ChinaGuangxi University, Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Nanning, ChinaCentral South University, State Key Laboratory of Powder Metallurgy, Changsha, ChinaPhase equilibria at 900°C and the liquidus projection in the Ni-rich corner of the Cu-Ni-Ti ternary system were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and differential scanning calorimetry (DSC) on the annealed and as-cast alloys. For the isothermal section at 900 °C, the hightemperature ternary compound (τ5) reported in the literature was not observed but the corresponding low-temperature compound (τ6) was identified to be stable at this temperature. For the liquidus projection, the primary phase τ4 was experimentally determined for the first time, and the related solidification paths were identified through the experimental data on the as-cast alloys. One solid-state invariant reaction, NiTi + τ4 → τ1 + Ni3Ti at 1098.3°C and two ternary eutectic reactions, L → τ1 + τ4 + NiTi at 1126°C and L → τ1 + τ6 + fcc(Cu,Ni) at 1069.5°C were detected. Scheil reaction scheme was also presented accordingly. All obtained experimental results will provide reliable information for further thermodynamic optimization of the Cu-Ni-Ti ternary system.http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800009J.pdfCu-Ni-TiIsothermal sectionThermal analysisLiquidus projectionReaction scheme |
| spellingShingle | Jin B. Lu X. Liu S. Huang D. Du Y. Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system Journal of Mining and Metallurgy. Section B: Metallurgy Cu-Ni-Ti Isothermal section Thermal analysis Liquidus projection Reaction scheme |
| title | Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system |
| title_full | Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system |
| title_fullStr | Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system |
| title_full_unstemmed | Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system |
| title_short | Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system |
| title_sort | experimental determination of phase equilibria at 900°c and liquidus surface in the cu ni ti system |
| topic | Cu-Ni-Ti Isothermal section Thermal analysis Liquidus projection Reaction scheme |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391800009J.pdf |
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