退火处理对激光熔覆AlCoCrFeNi2.1共晶高熵合金涂层组织与性能的影响

doi:10.13251/j.issn.0254-6051.2026.01.049

金属热处理 ›› 2026, Vol. 51 ›› Issue (1): 325-330.DOI: 10.13251/j.issn.0254-6051.2026.01.049

退火处理对激光熔覆AlCoCrFeNi_2.1共晶高熵合金涂层组织与性能的影响

赵明¹, 杨中奎¹, 王稔媛², 刘甲辰³, 谢芋江⁴

1.新疆昂晟能源科技有限公司, 新疆克拉玛依 834000;
2.新疆克拉玛依红山油田有限责任公司, 新疆克拉玛依 834000;
3.中国石油集团西部钻探工程有限公司石油工程总承包分公司, 陕西西安 710000;
4.西南石油大学新能源与材料学院, 四川成都 610500

收稿日期:2025-07-21 修回日期:2025-10-24 出版日期:2026-01-25 发布日期:2026-01-27
作者简介:赵明(1983—),男,工程师,主要从事油气田智能装备研发及制造工作,E-mail: zhaom@angsne.com
基金资助:
克拉玛依市重点研发计划(2024zdyf0028)

Effect of annealing on microstructure and properties of AlCoCrFeNi_2.1 eutectic high-entropy alloy coating by laser cladding

Zhao Ming¹, Yang Zhongkui¹, Wang Renyuan², Liu Jiachen³, Xie Yujiang⁴

1. Xinjiang Angsheng Energy Technology Co., Ltd., Karamay Xinjiang 834000, China;
2. Xinjiang Karamay Hongshan Oilfield Co., Ltd., Karamay Xinjiang 834000, China;
3. Engineering General Contract Branch of CNPC Western Drilling Engineering Co., Ltd., Xi'an Shaanxi 710000, China;
4. School of New Energy and Materials, Southwest Petroleum University, Chengdu Sichuan 610500, China

Received:2025-07-21 Revised:2025-10-24 Online:2026-01-25 Published:2026-01-27

摘要/Abstract

摘要： 采用激光熔覆技术在35CrMo钢表面制备AlCoCrFeNi_2.1共晶高熵合金涂层,分别在600、800和1000 ℃条件下对涂层试样进行2 h的退火处理,研究退火温度对涂层相结构、微观组织、显微硬度以及耐腐蚀性能的影响。结果表明,AlCoCrFeNi_2.1涂层由FCC相和B2相构成,退火处理不会改变涂层的相组成。涂层组织主要由平面晶、柱状晶、树枝晶和等轴晶构成,600 ℃退火时晶粒细化,但随着退火温度的升高,晶粒尺寸逐渐变大。涂层的显微硬度显著高于35CrMo钢基体,退火处理可以提高AlCoCrFeNi_2.1涂层的显微硬度,但随着退火温度的升高,涂层的硬度逐渐降低。涂层的耐腐蚀性能优于35CrMo钢基体,退火处理可进一步改善涂层的耐腐蚀性能。1000 ℃退火涂层具有最低的腐蚀速率,耐腐蚀性能最佳。

关键词: 退火处理, 共晶高熵合金, 激光熔覆, 组织, 性能

Abstract: AlCoCrFeNi_2.1 eutectic high-entropy alloy coating was prepared on the surface of 35CrMo steel by laser cladding. The coating was annealed at 600, 800 and 1000 ℃ for 2 h, respectively. The effect of annealing temperature on the phase structure, microstructure, microhardness and corrosion resistance of the coating was investigated. The results show that the AlCoCrFeNi_2.1 coating consists of the FCC phase and B2 phase, and the annealing treatment does not change the phase composition of the coating. The microstructure of the coating is mainly composed of planar, columnar, dendrites and equiaxed crystals. After annealing at 600 ℃, the grains are refined, but the grain size gradually increases with the increase of annealing temperature. The microhardness of the coating is significantly higher than that of the 35CrMo steel substrate. The annealing treatment can improve the microhardness of AlCoCrFeNi_2.1 coating, but the hardness of the coating gradually decreases with the increase of annealing temperature. The corrosion resistance of the coating is better than that of the 35CrMo steel substrate, and the annealing treatment can further improve the corrosion resistance of the coating. The coating annealed at 1000 ℃ has the lowest corrosion rate and the best corrosion resistance.

Key words: annealing treatment, eutectic high-entropy alloy, laser cladding, microstructure, properties

中图分类号:

TG174.4

赵明, 杨中奎, 王稔媛, 刘甲辰, 谢芋江. 退火处理对激光熔覆AlCoCrFeNi_2.1共晶高熵合金涂层组织与性能的影响[J]. 金属热处理, 2026, 51(1): 325-330.

Zhao Ming, Yang Zhongkui, Wang Renyuan, Liu Jiachen, Xie Yujiang. Effect of annealing on microstructure and properties of AlCoCrFeNi_2.1 eutectic high-entropy alloy coating by laser cladding[J]. Heat Treatment of Metals, 2026, 51(1): 325-330.

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退火处理对激光熔覆AlCoCrFeNi_2.1共晶高熵合金涂层组织与性能的影响

Effect of annealing on microstructure and properties of AlCoCrFeNi_2.1 eutectic high-entropy alloy coating by laser cladding

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退火处理对激光熔覆AlCoCrFeNi2.1共晶高熵合金涂层组织与性能的影响

Effect of annealing on microstructure and properties of AlCoCrFeNi2.1 eutectic high-entropy alloy coating by laser cladding

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退火处理对激光熔覆AlCoCrFeNi_2.1共晶高熵合金涂层组织与性能的影响

Effect of annealing on microstructure and properties of AlCoCrFeNi_2.1 eutectic high-entropy alloy coating by laser cladding