7075-T6 铝合金的磁辅助激光冲击强化

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-10-10 DOI:10.1016/j.optlastec.2024.111923

Binghan Huang, Longjie Xu, Chao Tang, Yang Yang, Junhao Wu, Yu Zhang, Yixuan Ye, Tao Huang, Chang Ye, Han Ding

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引用次数: 0

摘要

本研究采用了一种创新工艺--磁辅助激光冲击强化（MA-LSP）来强化 7075-T6 铝合金。在 MA-LSP 工艺中，目标样品在激光冲击强化过程中被置于磁场中。比较了 MA-LSP 处理和传统 LSP 处理的效果，以探索磁场对强化效果的影响。结果表明，MA-LSP 处理后的表面强化压痕比传统 LSP 处理后的压痕更深，表明接收到的冲击能量更大。经过 MA-LSP 处理后，表面晶粒细化更明显，表面硬度显著提高，并产生了更深的硬化层。深度残余应力测试表明，MA-LSP 后试样的表面压缩残余应力更大，试样的压缩残余应力层也更深。此外，试样在 MA-LSP 之后表现出更高的强度。我们认为，磁塑性和磁场对等离子体膨胀产生的约束效应在增强强化效果方面都发挥了作用。

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Magnetic-assisted laser shock peening of 7075-T6 aluminum alloy

In this study, an innovative process, magnetic–assisted laser shock peening (MA-LSP), was used to strengthen 7075-T6 aluminum alloy. In the MA-LSP process, the target sample is placed in a magnetic field during laser shock peening. The effects of MA-LSP treatment and conventional LSP treatment were compared to explore the influence of magnetic field on the peening effect. The results showed that the surface peening indentations were deeper after MA-LSP treatment than after conventional LSP, indicating a greater impact energy received. After MA-LSP, the surface grains were more obviously refined, the surface hardness was significantly improved, and a deeper hardened layer was produced. In-depth residual stress tests indicated a greater surface compressive residual stress of the sample after MA-LSP, and the compressive residual stress layer of the sample was also deeper. In addition, the sample exhibited greater strength following MA-LSP. It is believed that both magnetoplasticity and the constraining effect exerted by the magnetic field on plasma expansion play a role in enhancing the peening effects.

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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