Micro-Structural Enhancement Mechanism of LY2 Aluminum Alloy by Means of a Single Laser Shock Processing

Jinzhong, 鲁金忠 Lu; Kaiyu, 罗开玉 Luo; Aixin, 冯爱新 Feng; Junwei, 钟俊伟 Zhong; Guifang, 孙桂芳 Sun; Lei, 张雷 Zhang; Xiaoming, 钱晓明 Qian

doi:10.3788/cjl20103710.2662

Cited by 5 publications

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“…Micro parts mainly used in aeronautical, precision instrument and so on due to low energy consumption and portable light. Micro parts can be made by traditional blanking, forging, molding, or micro extrusion, slightly curved, micro shock forming and other new technologies [1]. Traditional micro machining is unable to meet the requirements of more complex parts in die design, installation, manufacturing, etc.…”

Section: Introductionmentioning

confidence: 99%

Research on Process of Multi-point Micro Laser Shock Forming

Fan¹,

Guo²,

Zhou³

et al. 2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

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Abstract:In order to study deformation feature of multi-point micro laser shock forming and distribution of impact surface morphology, single pass with multi-point forming experiments on copper T2 were conducted with Spitlight Nd: YAG laser ; Typical paths were introduced to characterize forming shape and distribution of impact surface morphology; Influence law of process parameters on micro laser shock forming was discussed. The results show that laser energy, overlapping rate and laser spot diameter are the main influence factors on impact deformation and surface morphology; Deformation and surface roughness increase with increment of laser energy. With the increase of the laser energy, the maximal deformation of metal sheet increases from 344.6 μm to 527.3 μm, and the surface waviness of the Path1, path2 and path3 were increased by 38.8%,47.37% and 75.41%. When the overlapping rate increases from 0%to 50%, the maximal deformation of metal sheet increases from 344.6 μm to564.6 μm, and the waviness on the path of path1,path2 and path3 are reduced by 9.46%、6.37%、9.81%. The higher the lapping rate is , the better the surface smoothness is. When the light spot diameter increases from 1 mm to 1.8 mm, the deformation of metal sheet gradually becomes smaller ,and the waviness on the path of path1,path2 and path3 are reduced by 44.22%、47.03%、55.1% .The larger the light spot diameter is, the better the surface smoothness is. It provides good guidance for the selection of process parameters in micro laser shock forming and surface quality control by the analysis and reasonable characterization.

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Section: Introductionmentioning

confidence: 99%

Research on Process of Multi-point Micro Laser Shock Forming

Fan¹,

Guo²,

Zhou³

et al. 2017

Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)

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“…Microscale laser shot peening (µ LSP) technology to solve the above problem provides a new way. Microscale laser shot peening (µ LSP) technology to solve the micro-structure of the modified surface to prolong life provides a new method, it is in the laser shot peening developed on the basis of, use high repeat rate of short pulse laser beam and material interaction of pressure wave induced surface modification of technology, by strengthening the role [8] and moderate residual stress distribution, can greatly improve the mechanical properties of the micro components [9,10] , so as to improve the structure reliability, the difference is energy for yellow hair to the focal range; the flare for sub-micrometer range.…”

Section: Introductionmentioning

confidence: 99%

Based on Microscale Laser Shock Processing of Metal Material Characteristics Analysis and Prospect

Wang

Zhu

Xie

et al. 2012

AMR

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It is introduced that laser shock peening is suitable for machining metal micro components. The micro scale effect and elastic-plastic theory of micro scale laser shock processing were analyzed and discussed. The research status, mechanism, key technology and influence factors of microscale lager shock peening were summarized and the problems in microscale lager shock peening were analyzed, which provides guidance for further research.

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Experiment and numerical simulation of laser shock micro dents

Liu

Huang

et al. 2014

IJSURFSE

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Micro-Structural Enhancement Mechanism of LY2 Aluminum Alloy by Means of a Single Laser Shock Processing

Cited by 5 publications

References 0 publications

Research on Process of Multi-point Micro Laser Shock Forming

Research on Process of Multi-point Micro Laser Shock Forming

Based on Microscale Laser Shock Processing of Metal Material Characteristics Analysis and Prospect

Experiment and numerical simulation of laser shock micro dents

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