预置表面织构对激光熔覆316L涂层的影响

doi:10.13229/j.cnki.jdxbgxb.20230604

摘要/Abstract

摘要：

将表面织构技术与激光熔覆相结合，通过建立多场耦合数值模拟模型，针对激光熔覆层易出现的裂纹、气孔等缺陷问题进行解决。预置织构可以平稳温度梯度、降低残余应力、减缓熔池流速，有效避免双涡流效应，提升熔覆层表面质量和晶粒尺寸均匀性。实验结果验证了数值模拟的有效性，为优化激光熔覆参数、改善熔覆层质量、提高熔覆层性能拓展了新思路。

关键词: 机械制造及其自动化, 激光熔覆, 表面织构, 残余应力, 表面粗糙度, 微观组织

Abstract:

The surface texturing technology is combined with laser cladding to solve the problems of cracks， porosity and other defects that are prone to occur in the laser cladding layer through the establishment of multi-field coupled numerical simulation model. The preset texture can smooth the temperature gradient， reduce the residual stress， decrease the melt pool flow rate， effectively avoid the double eddy current effect， and improve the surface quality and grain size uniformity of the cladding layer. The experimental results verify the validity of the numerical simulation， and expand new ideas for optimizing the laser cladding parameters， improving the quality of the cladding layer， and enhancing the performance of the cladding layer.

Key words: mechanical engineering and its automation, laser cladding, surface texture, residual stress, surface roughness, micro-organization

中图分类号:

TG456.7

赵昌龙,马晨,杨俊宝,赵钦祥,贾晓宇,马洪楠. 预置表面织构对激光熔覆316L涂层的影响[J]. 吉林大学学报(工学版), 2025, 55(3): 899-911.

Chang-long ZHAO,Chen MA,Jun-bao YANG,Qin-xiang ZHAO,Xiao-yu JIA,Hong-nan MA. Influence of pre⁃set surface texture on laser cladding of 316L coatings[J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(3): 899-911.

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水平	A	B	C
水平	激光功率/W	扫描速度/（mm·s^-1）	光斑半径/mm
1	600	1	2
2	800	2	2
3	1 000	3	2
4	1200	4	2
5	1 400	5	2