热处理对激光熔覆Fe基合金涂层组织与耐磨性的影响

doi:10.13251/j.issn.0254-6051.2025.08.045

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 286-291.DOI: 10.13251/j.issn.0254-6051.2025.08.045

热处理对激光熔覆Fe基合金涂层组织与耐磨性的影响

杨栋杰¹, 白峭峰², 欧阳昌耀²

1.山西机电职业技术学院材料工程系, 山西长治 046011;
2.太原科技大学机械工程学院, 山西太原 030024

收稿日期:2025-04-10 修回日期:2025-06-04 出版日期:2025-08-25 发布日期:2025-09-10
作者简介:杨栋杰(1985—),男,讲师,硕士,主要研究方向为材料加工,E-mail:ydj2005_2006@163.com
基金资助:
山西省重点研发计划(201903D121051)

Effect of heat treatment on microstructure and wear resistance of laser cladding Fe-based alloy coating

Yang Dongjie¹, Bai Qiaofeng², Ouyang Changyao²

1. Department of Materials Engineering, Shanxi Institute of Mechanicle and Electricle Engineering, Changzhi Shanxi 046011, China;
2. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China

Received:2025-04-10 Revised:2025-06-04 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 采用激光熔覆技术在50钢表面制备了马氏体涂层,研究了不同热处理温度对涂层显微组织与耐磨性的影响。结果表明,经过热处理后涂层的物相依然为α-Fe,与未热处理涂层相比物相未发生改变。1050 ℃×30 min热处理后涂层的枝晶间出现熔断和聚集,并呈短棒状弥散分布,弥散分布的枝晶间对组织均匀性有一定的促进作用。未热处理涂层的硬度为57.16 HRC,经过800 ℃热处理后硬度降为42.86 HRC,随着热处理温度的升高,涂层的硬度又呈现出逐渐上升的趋势,1050 ℃热处理后涂层的硬度达到最高,为58.12 HRC。1050 ℃×30 min热处理后涂层的磨损量最低,耐磨性较高。

关键词: 热处理, 激光熔覆, 马氏体涂层, 枝晶, 耐磨性

Abstract: Martensitic coating was fabricated on 50 steel by using laser cladding technology, and the effect of heat treatment temperature on microstructure and wear resistance of the coatings was investigated. The results show that the phase composition of the heat-treated coating remains α-Fe, which does not change compared with the coating without heat treatment. After heat treatment at 1050 ℃ for 30 min, the dendrites are melted, aggregated, dispersed in short rod, the dispersed dendrites promote the microstructure uniformity to a certain extent. The hardness of the coating without heat treatment is 57.16 HRC, which decreases to 42.86 HRC after heat treatment at 800 ℃. However, as the heat treatment temperature further increases, the hardness gradually rises, reaching a maximum of 58.12 HRC at 1050 ℃. The coating heat treated at 1050 ℃ for 30 min exhibits the lowest wear loss, indicating better wear resistance.

Key words: heat treatment, laser cladding, martensitic coating, dendrite, wear resistance

中图分类号:

TG14

杨栋杰, 白峭峰, 欧阳昌耀. 热处理对激光熔覆Fe基合金涂层组织与耐磨性的影响[J]. 金属热处理, 2025, 50(8): 286-291.

Yang Dongjie, Bai Qiaofeng, Ouyang Changyao. Effect of heat treatment on microstructure and wear resistance of laser cladding Fe-based alloy coating[J]. Heat Treatment of Metals, 2025, 50(8): 286-291.

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热处理对激光熔覆Fe基合金涂层组织与耐磨性的影响

Effect of heat treatment on microstructure and wear resistance of laser cladding Fe-based alloy coating

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