Aluminum niobium titanium intermediate alloy and preparation method thereof
By combining vacuum aluminothermic reduction and vacuum induction melting, the problems of high cost and long process flow in the preparation of aluminum-niobium-titanium alloys have been solved, and high-precision, low-impurity aluminum-niobium-titanium master alloys have been prepared, which are suitable for high-temperature structural materials for aerospace engines and energy equipment.
CN122406006APending Publication Date: 2026-07-17CHENGDE TIANDA VANADIUM IND
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDE TIANDA VANADIUM IND
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
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Figure CN122406006A_ABST
Abstract
本发明提供了一种铝铌钛中间合金及其制备方法，涉及合金技术领域。本发明第一步真空铝热还原，通过真空环境控制、反应热效应精准调控（通过原料配比调控反应热效应稳定在640~660kcal / kg）、铝粉过量系数匹配还原动力学的多参数协同，实现了Nb、Ti元素同步预合金化（Nb、Ti双金属还原率同步稳定在95%以上），预合金成分无限接近成品目标值，从根本上消除了第二步添加高熔点纯Nb、纯Ti的需求；第二步真空熔炼仅针对预合金进行Al含量微调与深度脱气，降低了第一步铝热还原的成分容错率，大幅提升工业化批次稳定性。本发明通过两步工艺协同，实现了高铌铝铌钛中间合金低成本、高精度、低杂质、高稳定性的统一。
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