Thermal and Diffusion Processes during Electron Beam Processing of Surfaces of Electroexplosive Alloying

IF 0.9 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Physics of the Solid State Pub Date : 2024-05-23 DOI:10.1134/s1063783424600523

A. V. Ionina

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Abstract

The mechanisms of hardening surface layers of carbon steel 45 after combined treatment including electroexplosive boroaluminizing, aluminizing with silicon carbide, and electron beam processing (EBP) are revealed. The combined processing leads to an increase in the hardening depth. After the electroexplosive boroaluminizing and EBP, the microhardeness is 16 GPa and the hardening depth is 90 μm; after the electroexplosive aluminizing combined with silicon carbide and EBP, the microhardness is 12.5 GPa and the hardening depth is 50 μm. In the initial state, the microhardness is 2 GPa. In the conditions of dry sliding friction, the wear resistance increases by a factor of 43 after electroexplosive boroaluminizing and EBP, and by a factor of 12 after electroexplosive aluminizing with silicon carbide. The surface hardening is achieved as a result of the formation of fine-disperse nonequilibrium structure containing strengthening phases. The models developed in this work allow one to explain the results by the peculiarities of the thermal and diffusion processes during EBP.

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电爆炸合金表面电子束加工过程中的热和扩散过程

摘要揭示了 45 号碳钢在经过电爆硼铝、碳化硅镀铝和电子束处理（EBP）等联合处理后表层硬化的机理。组合处理增加了硬化深度。经过电爆硼化和 EBP 后，显微硬度为 16 GPa，硬化深度为 90 μm；经过电爆渗铝结合碳化硅和 EBP 后，显微硬度为 12.5 GPa，硬化深度为 50 μm。在初始状态下，显微硬度为 2 GPa。在干滑动摩擦条件下，经过电爆硼铝化和 EBP 后，耐磨性提高了 43 倍，经过电爆碳化硅铝化后，耐磨性提高了 12 倍。表面硬化是由于形成了含有强化相的精细分散非平衡结构。这项工作中建立的模型可以用 EBP 过程中热和扩散过程的特殊性来解释结果。

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来源期刊

Physics of the Solid State 物理-物理：凝聚态物理

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

2-4 weeks

期刊介绍： Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.