东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (12): 57-65.DOI: 10.12068/j.issn.1005-3026.2025.20240137

• 机械工程 • 上一篇    下一篇

激光熔覆SiC陶瓷颗粒增强高熵合金硬度的实验研究

温雪龙, 竺光升, 张文波, 韩凤兵   

  1. 东北大学 机械工程与自动化学院,辽宁 沈阳 110819
  • 收稿日期:2024-06-19 出版日期:2025-12-15 发布日期:2026-02-09
  • 通讯作者: 温雪龙
  • 基金资助:
    国家自然科学基金资助项目(52275412)

Experimental Study on Hardness of SiC Ceramic Particles-Reinforced High-Entropy Alloy by Laser Cladding

Xue-long WEN, Guang-sheng ZHU, Wen-bo ZHANG, Feng-bing HAN   

  1. School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China.
  • Received:2024-06-19 Online:2025-12-15 Published:2026-02-09
  • Contact: Xue-long WEN

摘要:

利用激光熔覆成形技术制备陶瓷颗粒增强高熵合金.采用电子维氏硬度仪测量试件硬度,分析激光工艺参数、SiC陶瓷颗粒增强相含量及Al元素含量对激光熔覆高熵合金硬度的影响.结果表明:高熵合金熔覆层硬度值随激光功率增大变化不明显;随着扫描速度与送粉速率的增大,熔覆层硬度呈逐渐增大趋势;随着SiC陶瓷颗粒增强相含量增加,试件内部产生晶格畸变且微观应力增大,高熵合金硬度明显提升;Al元素对陶瓷颗粒增强高熵合金的性能具有调控作用,可进一步提高合金硬度.

关键词: 激光熔覆, 高熵合金, 陶瓷颗粒, 硬度, SiC

Abstract:

The ceramic particle-reinforced high-entropy alloy was prepared by laser cladding forming technology. The hardness of the specimens was measured using an electronic Vickers hardness tester, and the effects of laser process parameters, reinforcement phase content of SiC ceramic particles, and Al element content on the hardness of the high-entropy alloy by laser cladding were analyzed. The results indicate that the hardness value of the high-entropy alloy’s cladding layer does not show a significant change with the increase in laser power. With the increase in scanning speed and powder feeding rate, there is a gradual upward trend in the hardness of the cladding layer. With the increase in the reinforcement phase content of SiC ceramic particles, lattice distortion occurs in the specimen; the micro-stress increases, and the hardness of the high-entropy alloy increases obviously. Al element has an obvious regulation effect on the properties of ceramic particle-reinforced high-entropy alloy and can further improve the hardness of the alloy.

Key words: laser cladding, high-entropy alloy, ceramic particles, hardness, SiC

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