FeCoCrNi涂层激光熔覆过程温度场与应力场模拟

doi:10.13251/j.issn.0254-6051.2025.08.041

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 254-263.DOI: 10.13251/j.issn.0254-6051.2025.08.041

FeCoCrNi涂层激光熔覆过程温度场与应力场模拟

刘冉, 罗海光, 李颖, 林耔辰

北方工业大学机械与材料工程学院, 北京 100144

收稿日期:2025-03-07 修回日期:2025-06-19 出版日期:2025-08-25 发布日期:2025-09-10
作者简介:刘冉(1984—),女,副教授,博士,主要研究方向为金属材料加工,E-mail:liuran@ncut.edu.cn
基金资助:
国家自然科学基金(52001006)

Simulation on temperature and stress field of FeCoCrNi coating during laser cladding

Liu Ran, Luo Haiguang, Li Ying, Lin Zichen

College of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China

Received:2025-03-07 Revised:2025-06-19 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 采用FeCoCrNi高熵合金作为熔覆材料,316不锈钢为基体,使用ANSYS Workbench软件模拟了不同激光功率下单道激光熔覆过程中的温度场和应力场。结果表明,随着激光功率的增加,熔池最高温度上升,热影响区扩大。过高的激光功率容易导致裂纹等缺陷,而适中的激光功率可以实现良好的冶金结合。在熔覆过程中,快冷快热的特性以及功率增加导致的热积累现象使最大瞬时应力上升,但材料完全熔化后应力趋于稳定。残余应力主要集中在熔覆层表面、结合区及熔覆末端,且随功率增加而增大。

关键词: 激光熔覆, 温度场, 应力场, 高熵合金, 数值模拟

Abstract: Using FeCoCrNi high-entropy alloy as the cladding material and 316 stainless steel as the substrate, the temperature and stress fields during a single laser cladding process with different laser powers was simulated by ANSYS Workbench software. The results indicate that as the laser power increases, the maximum temperature of the melt pool rises and the heat affected zone expands. Excessive laser power leads to defects such as cracks, while moderate laser power can achieve good metallurgical bonding. During the cladding process, the rapid cooling and heating characteristics, as well as the thermal accumulation phenomenon caused by the increase in power, result in an increase in the maximum instantaneous stress. However, after the material is completely melted, the stress tends to stabilize. The residual stress is mainly concentrated on the surface of the cladding layer, the bonding zone, and the cladding end, and increases with the increase of power.

Key words: laser cladding, temperature field, stress field, high-entropy alloy, numerical simulation

中图分类号:

TG135.6

刘冉, 罗海光, 李颖, 林耔辰. FeCoCrNi涂层激光熔覆过程温度场与应力场模拟[J]. 金属热处理, 2025, 50(8): 254-263.

Liu Ran, Luo Haiguang, Li Ying, Lin Zichen. Simulation on temperature and stress field of FeCoCrNi coating during laser cladding[J]. Heat Treatment of Metals, 2025, 50(8): 254-263.

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FeCoCrNi涂层激光熔覆过程温度场与应力场模拟

Simulation on temperature and stress field of FeCoCrNi coating during laser cladding

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