Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du
{"title":"Co-V-Zr 系统等温截面和液面投影的实验测定","authors":"Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du","doi":"10.1007/s11661-024-07497-3","DOIUrl":null,"url":null,"abstract":"<p>The construction of the experimental liquidus surface projection and isothermal sections of the Co–V–Zr ternary system was based on the analyses of solidification microstructures and phase constituents. A new compound τ with Cr<sub>0.5</sub>Fe<sub>1.5</sub>Zr-type was identified, and the measured composition range of Zr in τ was ∼ 28.6 to 57.3 at. pct and 32.9 to 56.8 at. pct at 1100 °C and 1000 °C, respectively. The liquidus surface projection identified nine primary solidification areas, while two primary solidification areas were inferred from binary diagrams. Moreover, eight and ten three-phase equilibria were determined at 1100 °C and 1000 °C, respectively. The measured solubility of V in Co<sub>23</sub>Zr<sub>6</sub>, Co<sub>2</sub>Zr and CoZr reached ~ 0.5, 7.6 and 4.1 at. pct at 1100 °C. Meanwhile, the solubility of V in Co<sub>23</sub>Zr<sub>6</sub>, Co<sub>2</sub>Zr, CoZr and CoZr<sub>2</sub> was measured to be ~ 0.4, 7.6, 1.6 and 3.6 at. pct at 1000 °C. The solubility of Zr in Co<sub>2</sub>V<sub>3</sub> was ~ 3.6 at. pct at 1100 °C, while the solubility of Zr in Co<sub>3</sub>V, Co<sub>2</sub>V<sub>3</sub> and CoV<sub>3</sub> was determined ~ 1.3, 3.0 and 4.5 at. pct at 1000 °C, respectively. The experimental data can help improve the thermodynamic parameters of the Co–V–Zr system and advance the development of databases for multi-component Co-based superalloys.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"21 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental Determination of the Isothermal Sections and Liquidus Surface Projection of the Co–V–Zr System\",\"authors\":\"Jiaxing Sun, Cuiping Guo, Changrong Li, Zhenmin Du\",\"doi\":\"10.1007/s11661-024-07497-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The construction of the experimental liquidus surface projection and isothermal sections of the Co–V–Zr ternary system was based on the analyses of solidification microstructures and phase constituents. A new compound τ with Cr<sub>0.5</sub>Fe<sub>1.5</sub>Zr-type was identified, and the measured composition range of Zr in τ was ∼ 28.6 to 57.3 at. pct and 32.9 to 56.8 at. pct at 1100 °C and 1000 °C, respectively. The liquidus surface projection identified nine primary solidification areas, while two primary solidification areas were inferred from binary diagrams. Moreover, eight and ten three-phase equilibria were determined at 1100 °C and 1000 °C, respectively. The measured solubility of V in Co<sub>23</sub>Zr<sub>6</sub>, Co<sub>2</sub>Zr and CoZr reached ~ 0.5, 7.6 and 4.1 at. pct at 1100 °C. Meanwhile, the solubility of V in Co<sub>23</sub>Zr<sub>6</sub>, Co<sub>2</sub>Zr, CoZr and CoZr<sub>2</sub> was measured to be ~ 0.4, 7.6, 1.6 and 3.6 at. pct at 1000 °C. The solubility of Zr in Co<sub>2</sub>V<sub>3</sub> was ~ 3.6 at. pct at 1100 °C, while the solubility of Zr in Co<sub>3</sub>V, Co<sub>2</sub>V<sub>3</sub> and CoV<sub>3</sub> was determined ~ 1.3, 3.0 and 4.5 at. pct at 1000 °C, respectively. The experimental data can help improve the thermodynamic parameters of the Co–V–Zr system and advance the development of databases for multi-component Co-based superalloys.</p>\",\"PeriodicalId\":18504,\"journal\":{\"name\":\"Metallurgical and Materials Transactions A\",\"volume\":\"21 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-07-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metallurgical and Materials Transactions A\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s11661-024-07497-3\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallurgical and Materials Transactions A","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s11661-024-07497-3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Experimental Determination of the Isothermal Sections and Liquidus Surface Projection of the Co–V–Zr System
The construction of the experimental liquidus surface projection and isothermal sections of the Co–V–Zr ternary system was based on the analyses of solidification microstructures and phase constituents. A new compound τ with Cr0.5Fe1.5Zr-type was identified, and the measured composition range of Zr in τ was ∼ 28.6 to 57.3 at. pct and 32.9 to 56.8 at. pct at 1100 °C and 1000 °C, respectively. The liquidus surface projection identified nine primary solidification areas, while two primary solidification areas were inferred from binary diagrams. Moreover, eight and ten three-phase equilibria were determined at 1100 °C and 1000 °C, respectively. The measured solubility of V in Co23Zr6, Co2Zr and CoZr reached ~ 0.5, 7.6 and 4.1 at. pct at 1100 °C. Meanwhile, the solubility of V in Co23Zr6, Co2Zr, CoZr and CoZr2 was measured to be ~ 0.4, 7.6, 1.6 and 3.6 at. pct at 1000 °C. The solubility of Zr in Co2V3 was ~ 3.6 at. pct at 1100 °C, while the solubility of Zr in Co3V, Co2V3 and CoV3 was determined ~ 1.3, 3.0 and 4.5 at. pct at 1000 °C, respectively. The experimental data can help improve the thermodynamic parameters of the Co–V–Zr system and advance the development of databases for multi-component Co-based superalloys.