一种耐久型高熵合金冲头及其制备方法

By optimizing the composition and preparation method of high-entropy alloys, a composite structure of FCC and HCP phases was formed and an antioxidant layer was added, which solved the problem of high-entropy alloy punches being easily damaged in continuous stamping operations and achieved improvements in high toughness, hardness and wear resistance.

CN117965992BActive Publication Date: 2026-07-17JIANGSU TAIRUI REFRACTORY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU TAIRUI REFRACTORY
Filing Date
2023-12-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing high-entropy alloy punches are prone to chipping during continuous stamping operations, and lack sufficient wear resistance and durability.

Method used

By optimizing the composition and preparation method of high-entropy alloys, elements such as Al, Ti, V, and W are added to CoCrFeNi substrates to form a composite structure of FCC and HCP phases, and an antioxidant layer is set on the surface to optimize the crystal phase structure and surface properties.

Benefits of technology

It improves the toughness, hardness, wear resistance and durability of alloy punches, reduces the risk of brittle fracture, and extends the service life of punches.

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Abstract

本发明涉及合金冲头的技术领域，尤其涉及一种耐久高熵合金冲头及其制备方法，其中耐久高熵合金冲头，所述合金组成化学表达式为：(CoCrFeNi)x(M)y，其中，M选自Al、Ti、V和W中的至少一种，80at.％≤x≤95at.％，5at.％≤y≤20at.％，且x+y＝100。耐久高熵合金冲头的制备方法包括：S1、原料称取；S2、熔炼；S3、冲头制备。本申请通过在CoCrFeNi中添加Al、Ti、V和W，在FCC相中增加BCC相以及HCP相，并且形成层状结构，通过层状结构与网状结构的配合，有效提高合金冲头的韧性、硬度以及强度。
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