吸收涂层材料对激光冲击强化效率的影响

IF 2.6 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals Pub Date : 2024-09-13 DOI:10.3390/met14091045

Elena Gachegova, Denis Davydov, Sergey Mironov, Alexander Kalinenko, Maxim Ozerov, Sergey Zherebtsov, Oleg Plekhov

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引用次数: 0

摘要

激光冲击强化（LSP）是一种相对新颖且前景广阔的表面硬化方法。吸收层是保护试样表面免受激光辐照引起的不良热效应影响的必要条件，应被视为众多变化参数之一。涂层的物理特性及其与试样表面的附着力会极大地影响 LSP 的结果。本研究使用了三种常用的吸收涂层，即带粘性层的黑色聚氯乙烯胶带、铝箔和黑色醇酸树脂漆，覆盖在具有球状或片状微结构的 Ti-6Al-4V 钛合金三毫米厚的板材上。在功率密度为 10 GW/cm2 的情况下，对板材的一面进行了 LSP 处理。采用钻孔法评估残余应力。结果发现铝箔是 Ti-6Al-4V 钛合金 LSP 的最佳选择。利用 EBSD 分析进行的微观结构研究表明，无论初始结构如何，LSP 都不会导致晶粒大小显著减小、孪生或位错密度增长。

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The Influence of Absorbing Coating Material on the Efficiency of Laser Shock Peening

Laser shock peening (LSP) is a relatively novel and promising surface hardening method. An absorbing layer, which is needed to protect the specimen surface from undesirable thermal effects caused by laser irradiation, should be considered as one of many varying parameters. The physical characteristics of the coating and its adhesion to the specimen surface can significantly influence the result of LSP. In this study, three commonly used absorbing coatings, namely black polyvinylchloride tape with a sticky layer, aluminum foil, and black alkyd paint were used to cover three-millimeter-thick plates of the Ti-6Al-4V titanium alloy with globular or lamellar microstructures. LSP of one side of the plates was carried out with a power density of 10 GW/cm2. The hole drilling method was used to evaluate residual stresses. The aluminum foil was found to be the optimal option for LSP of the Ti-6Al-4V titanium alloy. Microstructural investigations carried out using EBSD analysis suggested that no significant reduction in grain size, twinning, or dislocation density growth occurred as a result of LSP irrespective of the initial structure.

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来源期刊

Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

4.90

自引率

13.80%

发文量

1832

审稿时长

1.5 months

期刊介绍： Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.