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[1]钱绍祥.激光喷丸处理对铁基熔覆层的组织演变和磨损性能的影响[J].电镀与精饰,2024,(9):40-47.[doi:doi: 10.3969/j.issn.1001-3849.2024.09.006]
　Qian Shaoxiang.Effects of laser peening on the microstructure evolution and wear performance of Fe-based cladding layer[J].Plating & Finishing,2024,(9):40-47.[doi:doi: 10.3969/j.issn.1001-3849.2024.09.006]

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激光喷丸处理对铁基熔覆层的组织演变和磨损性能的影响

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG] 卷: 期数: 2024年9 页码: 40-47 栏目: 出版日期: 2024-09-15

Title:: Effects of laser peening on the microstructure evolution and wear performance of Fe-based cladding layer

作者:: 钱绍祥; (镇江市高等专科学校现代装备制造学院,江苏镇江212028)

Author(s):: Qian Shaoxiang; ( School of Modern Equipment Manufacturing, Zhenjiang College, Zhenjiang 212028, China)

关键词:: 激光熔覆; 激光喷丸; 显微组织; 残余应力; 磨损性能

Keywords:: laser cladding; laser peening; microstructure; residual stress; wear performance

分类号:: TG174.44

DOI:: doi: 10.3969/j.issn.1001-3849.2024.09.006

文献标志码:: A

摘要:: 为改善传统激光熔覆制备过程中产生的气孔、微裂纹、残余应力等质量问题，提高熔覆层的力学性能，采用激光喷丸（Laser peening, LP）后处理铁基熔覆层，对比分析激光喷丸处理前后熔覆层的微观组织演变规律和磨损性能机理。结果发现，经LP处理后，熔覆层中没有发生相变，（110）晶面衍射峰产生了宽化效应，细化了表层的晶粒，改变了表面复杂的残余应力场，获得了均匀分布的残余压应力，显微硬度为激光喷丸处理前的1.3倍，摩擦系数相较于激光喷丸处理前降低了25%，有效的增强了熔覆层的磨损性能。

Abstract:: Aimed to eliminate the defects such as pore, microcrack and residual stress in traditional laser cladding layers, and improved cladding layer’s mechanical property, Fe-based cladding layer was post-processed by laser peening(LP), microstructure evolution and wear mechanism of cladding layer before and after LP were comparative analyzed. The results show that, after LP process, there was no phase transition in the cladding layer, the broadening effect was generated on (110) crystal plane diffraction peak, grains of the surface layer were refined, the complex residual stress field on the surface of the cladding layer was changed, the uniformly distributed residual compressive stress was obtained, the layer’s microhardness was 1.3 times of that before LP, the layer’s friction coefficient is 25% lower than that before LP, the wear performance of the cladding layer was enhanced effectively.

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更新日期/Last Update: 2024-09-11