Temperature field simulation and experimental investigation for column-faced 45 steel via ultrafast electron beam scanning

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-02-01 DOI:10.1016/j.surfcoat.2025.131802

Rong Wang, Zhenfei Song, Jiaxin Yang, Xinkai Li, Yitao Weng, Xulong Ren, Qimao Qin, Jinjie Song, Zhenzhao Mo

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Abstract

Exploring precise remanufacturing methods for complex parts is of considerable practical significance for extending the service life of components. Herein, in this paper, the thickness of the composite reinforced layer and the microstructure of the polished layer formed in the electron beam polishing process of 45 steel cylinder are predicted by an innovative numerical simulation method. Results indicate that the thickness of the polished layer predicted by numerical simulation and experimental error is about 7 %. The melting zone is comprised of fine equiaxed crystals, slender columnar crystals, slender and fine cellular crystals from the surface to the inside, and the heat-affected zone is mainly composed of lath needle martensite. After polishing, the surface is smooth and the surface roughness is reduced from 7.32 μm to 0.76 μm. Moreover, the microhardness increased from 240 HV_0.1 to 714 HV_0.1, which is approximately 3 times the hardness of the matrix. The wear volume decreased from 5.52 × 10⁷ μm³ to 3.44 × 10⁷ μm³, and the wear resistance increased by 1.6 times. Under the effect of refined grain strengthening, the comprehensive mechanical properties of the polishing layer are significantly improved.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.