Parameter optimization for in-situ synthesized TiB2/TiC particle composite coatings by laser cladding based on OOA-RFR and U-NSGA-III

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-09-09 DOI:10.1016/j.optlastec.2024.111755

Qiang Liang , Yonghang Xu , Binyuan Xu , Yanbin Du

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引用次数: 0

Abstract

During laser cladding, the in-situ synthesis of ceramic particles in the coatings can further enhance the performance of the coatings. However, current research lacks a method to predict and optimize the in-situ synthesized composite coatings. Therefore, in this paper, laser power, scanning speed, powder feeding speed, overlap rate, and the content of Ti and B₄C mixed powder were used as experimental factors to optimize the powder utilization, surface flatness, and microhardness of the coatings. The random forest optimized by the osprey optimization algorithm was used as the predictive model and the unified non-dominated sorting genetic algorithm III was used for optimization. The microhardness of the optimized coatings was enhanced due to the in-situ synthesized TiB₂/TiC particles, and the particles were dispersed within the composite coating. The powder utilization of the composite coating under the optimum process parameters was 72.18%, the surface flatness was 81.96% and the microhardness was 712.3 HV_1.0. The relative errors were all lower than 3%, and the hardness was 5.76% higher than that of the substrate. Therefore, this method can provide a reference for the optimization of process parameters for in-situ synthesized composite coatings.

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基于 OOA-RFR 和 U-NSGA-III 的激光熔覆原位合成 TiB2/TiC 粒子复合涂层的参数优化

在激光熔覆过程中，涂层中陶瓷颗粒的原位合成可以进一步提高涂层的性能。然而，目前的研究缺乏对原位合成复合涂层进行预测和优化的方法。因此，本文将激光功率、扫描速度、送粉速度、重叠率以及 Ti 和 B4C 混合粉的含量作为实验因素，以优化涂层的粉末利用率、表面平整度和显微硬度。采用osprey优化算法优化的随机森林作为预测模型，并使用统一非支配排序遗传算法III进行优化。由于原位合成了 TiB2/TiC 颗粒，且颗粒分散在复合涂层中，因此优化涂层的显微硬度得到了提高。在最佳工艺参数下，复合涂层的粉末利用率为 72.18%，表面平整度为 81.96%，显微硬度为 712.3 HV1.0。相对误差均小于 3%，硬度比基体高 5.76%。因此，该方法可为原位合成复合涂层的工艺参数优化提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems