Differences in microstructure and impurity content among vanadium–aluminum alloys of various grades

ZHANG Qi; YAO Zhengwu; MA Zhilong; HE Zhimin; CHEN Yanxiong; NI Hangxing

doi:10.7513/j.issn.1004-7638.2026.04.007

Volume 47 Issue 4

Aug. 2026

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ZHANG Qi, YAO Zhengwu, MA Zhilong, HE Zhimin, CHEN Yanxiong, NI Hangxing. Differences in microstructure and impurity content among vanadium–aluminum alloys of various grades[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(4): 58-65. doi: 10.7513/j.issn.1004-7638.2026.04.007

Citation:

ZHANG Qi, YAO Zhengwu, MA Zhilong, HE Zhimin, CHEN Yanxiong, NI Hangxing. Differences in microstructure and impurity content among vanadium–aluminum alloys of various grades[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(4): 58-65. doi: 10.7513/j.issn.1004-7638.2026.04.007

Citation:

ZHANG Qi, YAO Zhengwu, MA Zhilong, HE Zhimin, CHEN Yanxiong, NI Hangxing. Differences in microstructure and impurity content among vanadium–aluminum alloys of various grades[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(4): 58-65. doi: 10.7513/j.issn.1004-7638.2026.04.007

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Differences in microstructure and impurity content among vanadium–aluminum alloys of various grades

doi: 10.7513/j.issn.1004-7638.2026.04.007

1.
School of Materials and New Energy, Ningxia University, Yinchuan 750000, Ningxia, China
2.
Ningxia Orient Tantalum Industry Co., Ltd., Shizuishan 753000, Ningxia, China

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Received Date: 2025-09-12
Accepted Date: 2026-01-22
Rev Recd Date: 2026-01-06
Publish Date: 2026-08-31

Abstract

Abstract

Titanium alloys are extensively utilized in the aerospace, automotive, and biomedical sectors. Vanadium–aluminum master alloys are key materials for preparing titanium alloys. In this study vanadium–aluminum master alloys of three grades such as AlV55, AlV65, and AlV85 were synthesized via aluminothermic route under identical raw-material inputs while varying stoichiometric ratios. The resulting ingots were characterized with respect to microstructures, impurity inventory, and mechanical response. The results show that AlV55 exhibits the lowest bulk-impurity level; however, its microstructure contains micro-cracks and gas-induced porosity. Phase analysis reveals Al₈V₅ intermetallic and a V-rich solid solution, the former conferring elevated hardness and wear resistance. AlV85, although showing higher tramp-element contents, displays superior inter-ingot consistency; the sole presence of the AlV₃ phase yields reduced hardness and inferior wear performance. AlV65 delivers the most balanced property profile, combining moderate impurity content with advantageous mechanical properties.
- vanadium-aluminum alloy,
- thermite process,
- microstructure,
- impurity,
- mechanical property

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References(23)

References

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