Effect of in-situ synthesis of TiC/TiB2 particles by laser cladding on the microstructure and properties of Co-based coatings

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-07-20 DOI:10.1016/j.optlastec.2025.113620

Qiang Liang , Yonghang Xu , Binyuan Xu , Hong Chen , Bin Ma

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Abstract

In this study, TiC/TiB₂ composite coatings were synthesized in-situ on D2 die steel by laser cladding. The effects of adding different contents of Ti/B₄C powders on the microstructure and mechanical properties of the coatings were investigated. The results showed that the average grain size of the coatings was significantly refined and the microhardness of the coatings was improved after the in-situ synthesis of TiC/TiB₂ particles. The microhardness of the coating with 12% Ti/B₄C powder added was the largest, reaching 711.0 HV_1.0. The wear resistance of the coatings was positively correlated with the addition of Ti/B₄C powders, with a maximum reduction in wear rate of 71.69%. The ultimate tensile strength and the elongation of the composite coatings increased with the addition of Ti/B₄C, but impact absorption energy decreased. This study can provide a reference for the industrial application of in-situ synthesis to improve the mechanical properties of Co-based coatings.

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激光熔覆原位合成TiC/TiB2颗粒对co基涂层组织和性能的影响

采用激光熔覆的方法在D2模具钢表面原位合成了TiC/TiB2复合涂层。研究了Ti/B4C粉末添加量对涂层显微组织和力学性能的影响。结果表明：原位合成TiC/TiB2颗粒后，涂层的平均晶粒尺寸明显细化，涂层的显微硬度得到提高；添加12% Ti/B4C粉末的涂层显微硬度最大，达到711.0 HV1.0。Ti/B4C粉末的加入与涂层的耐磨性呈正相关，最大磨损率降低71.69%。Ti/B4C的加入提高了复合涂层的抗拉强度和延伸率，但降低了冲击吸收能。本研究可为原位合成技术在工业上的应用提供参考，以提高co基涂层的力学性能。

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