Preparation and microstructure investigation of aluminium-vanadium master alloys
Source abstract
Abstract
In this paper, aluminium-vanadium master alloys AlVx (x = 55, 65, 85) were prepared by the aluminothermic reduction method. The thermodynamic characteristics of the reaction and the microstructures of the alloys were systematically analysed. The aluminothermic reaction was confirmed to proceed spontaneously with intense exothermic characteristics, exhibiting a specific heat release of up to 4988 J/g. For the AlV55 alloy, the grains displayed a granular morphology with a relatively finer grain size, and its fracture exhibited an intergranular fracture mode. For the AlV65 and AlV85 alloys, the grains exhibited a columnar morphology with a coarser grain size. These two alloys (AlV65 and AlV85) exhibited a relatively bright metallic lustre, and their fractures presented a cleavage fracture mode. The Al8V5 phase accounted for a large proportion in the AlV55 alloy; the AlV3 phase accounted for a large proportion in the AlV65 alloy; and only the AlV3 phase was detected in the AlV85 alloy. The AlV85 alloy exhibited the highest chemical composition homogeneity, whereas the AlV55 alloy showed the lowest. This phenomenon was mainly attributed to the solidification temperature range, as well as the phase proportion and distribution characteristics associated with the specific alloy composition.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chengde Tianda Vanadium Industry Co., Ltd.
References (13)
Show source-provided references
1. S.L. Yee, H. Wan, M. Chen, L. Li, J. Li, and X. Ma, Development of a cleaner route for aluminum-vanadium alloy production. J Mater Res Techn 16 (2022), pp. 187–193.10.1016/j.jmrt.2021.11.125 ↗
2. S. Liu, J. Li, X. Lv, Z. Lun, and C. Bai, Synthesis of V-Al alloy by microwave-assisted self-propagating. Metal Int 16(12) (2011), pp. 41–47.
3. L. Wang, H. Wan, H. Xiong, J. Liu, H. Wang, B. Yang, L. Li, and Y. Dai, Investigation and study on the novel method of preparing Al-V alloy by electrode assisted heating. J Mater Res Techn 9(5) (2020), pp. 10576–10584.10.1016/j.jmrt.2020.07.026 ↗
4. D. Li, L. Wang, and Y. Lu, A research on the preparation technology of AlV65 master alloy by electrode heating. J Kun Univ Sci Techn (Natural Science) 43(5) (2018), pp. 8–13.
5. P. La, X. Lu, D. Shen, Y. Wei, H. Wang, and X. Guo, Study on high grade vanadium-aluminium alloy prepared by aluminothermic reaction. Pow Metall Techn 30(5) (2012), pp. 371–375.
6. A. Kostov, D. Zivkovic, and B. Friedrich, Thermodynamic study of Ti-V and Al-V systems using FactSage. J Min Metall 42(B) (2006), pp. 57–65.10.2298/JMMB0601057K ↗
7. N. Li, L. Ma, R. Cao, T. Hua, H. Lv, and J. Zhang, Overview of vanadium-aluminum master alloy technology for titanium alloy. Met World 4 (2021), pp. 25–28.
8. C.K. Gubota, Production of vanadium by thermit process. Chenggang Jishu 2(3) (2006), pp. 62–71.
9. H. Wan, B. Xu, D. Li, B. Yang, and Y. Dai, Research status of aerospace grade vanadium aluminum master alloy in China. J Kunm Univ Sci Techn (Natural Science) 44(2) (2019), pp. 11–18.
10. Y. Meng, Y. Yang, C. Li, L. Cao, Z. Zhao, Q. Zhu, and J. Cui, Evolution of V-containing phases during preparation of Al-based Al−V master alloys. Trans Nonfer Met Soc China 32 (2022), pp. 2110–2124.10.1016/S1003-6326(22)65934-X ↗
11. Y. Zhang, J. Li, H. Wang, S. Liu, Z. Wang, and L. Zhang, Microstructure and properties of Al-V master alloys prepared by aluminothermic reduction with different V contents. J Alloy Comp 735 (2018), pp. 1267–1274.
12. S. Liu, Z. Lun, C. Bai, X. Lv, and J. Li, Effect of cooling rate on the microstructure and compositional homogeneity of Al-V master alloys. Mater Sci Eng: A 556 (2012), pp. 627–633.
13. H. Wan, D. Li, B. Yang, Y. Dai, and B. Xu, Preparation and characterization of high-purity AlV85 master alloy for aerospace titanium alloys. Mater Char 169 (2020), pp. 110678.