一种成分均匀的大尺寸无铸造缺陷高熵合金铸锭的制备方法

By combining magnetic levitation melting and vacuum consumable melting, the problems of compositional uniformity and casting defects in large-size high-entropy alloy ingots were solved, achieving the preparation of high-purity and high-utilization high-entropy alloy ingots and reducing production costs.

CN116511429BActive Publication Date: 2026-07-17XIAN RARE METAL MATERIALS RES INST CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN RARE METAL MATERIALS RES INST CO LTD
Filing Date
2023-06-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to produce large-size high-entropy alloy ingots while ensuring accurate composition and uniform distribution, and avoiding casting defects such as bubbles and shrinkage cavities. This is especially problematic in industrial production due to casting defects and high costs.

Method used

A method combining magnetic levitation melting and vacuum consumable melting is adopted to prepare high-entropy alloy ingots through multiple magnetic levitation melting and vacuum consumable melting processes. The process includes steps such as weighing, magnetic levitation melting, electrode fabrication, and vacuum consumable melting to ensure uniform composition and absence of casting defects.

Benefits of technology

This method achieves compositional uniformity and high purity in large-size high-entropy alloy ingots, avoiding impurity contamination and casting defects, reducing production costs, and improving alloy utilization and yield.

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Abstract

本发明公开了一种成分均匀的大尺寸无铸造缺陷高熵合金铸锭的制备方法,该方法包括:一、按照高熵合金铸锭的设计成分配比称取原料,经隔离打磨、清洗干燥后存放;二、选择原料进行磁悬浮熔炼得到粗铸锭;三、将多个粗铸锭焊接后与辅助电极焊接得到自耗电极;四、将自耗电极进行真空自耗熔炼得到铸锭;五、将铸锭切除冒口得到高熵合金铸锭。本发明通过对原料选择、磁悬浮熔炼工艺及真空自耗熔炼工艺的限定,提高了高熵合金铸锭的成分均匀性,并避免了杂质污染,减少含有铸造缺陷的冒口尺寸,获得无气泡、缩孔、缩松等铸造缺陷的大尺寸高熵合金铸锭,实现了工业级高熵合金的制备。
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