宇航级钒铝合金脱氧技术研究  

Deoxidization Technology for Aerospace Grade Vanadium Aluminum Alloy

作　　者：陈海军[1] 师启华 尹丹凤[1] 高雷章 Chen Haijun;Shi Qihua;Yin Danfeng;Gao Leizhang(Pangang Group Research Institute Co.,Ltd.,State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2020年第6期16-20,共5页Iron Steel Vanadium Titanium

摘　　要：宇航级钒铝合金氧含量对下游钛合金材料的性能有重要的影响。针对铝热法冶炼制备的钒铝合金中氧含量高的问题,通过热力学分析明确了钒铝合金中氧的赋存状态,Al V85合金中氧元素优先与铝结合成了α-Al2O3,其次与钒结合成了VO;Al V55合金中氧元素与铝结合成了α-Al2O3。采用正交试验获得了真空脱氧的最佳条件,在过热度60℃、真空度1 000 Pa、脱气时间5 min,吹氩气搅拌2 min的条件下,钒铝合金中氧含量由0.15%降低至0.009 89%,所得产品满足Gf E公司宇航级产品标准要求。The oxygen content in aerospace-grade vanadium aluminum alloy has an important effect on the properties of downstream titanium alloy materials.Aiming at the problem of high oxygen content in vanadium aluminum alloy prepared by aluminothermic smelting,the occurrence state of oxygen in V-Al alloys was confirmed by thermodynamic analyses.The oxygen in Al V85 preferentially combines with Al to generateα-Al2O3and then unites with V to form VO.The oxygen in Al V55 will combine with Al in the alloy to formα-Al2O3.The optimum conditions of vacuum deoxidation were obtained by orthogonal tests.At superheat of 60℃,vacuum degree of 1 000 Pa,degassing time of 5 min,argon blowing and stirring for 2 min,the oxygen content of vanadium aluminum alloy can be decreased from 0.15%to 0.009 89%,satisfying the Gf E requirements of aerospace-grade vanadium aluminum alloy.

关 键 词：钒铝合金 氧含量 真空脱氧 过热度 真空度 

分 类 号：TF841.3[冶金工程—有色金属冶金]