Abstract
Directing at the hard machinability of high volume fraction 70% SiCp/Al composites, a longitudinal and torsional ultrasonic-assisted milling (LTUAM) method is proposed to improve the edge quality and machining efficiency. By observing the metallographic structure of the material, a three-dimensional (3D) finite element model of random distribution of spherical, elliptical and polygonal SiC particles is established and analyzed by ABAQUS simulation software. The formation mechanism of edge defects, stress distribution, defect characteristics and the effect of machining parameters on milling forces are investigated during ultrasonic-assisted milling. The results show that the edge defects appear at the inlet, outlet and middle edge position, especially is more serious at the outlet position. The SiC particles failure modes mainly include particle pullout, particle shearing, and crushing, moreover, the edge defects mainly include matrix tearing, edge breakage, burrs, bulges and pits. Ultrasonic-assisted milling (UAM) with a certain range of ultrasonic amplitude could effectively reduce the surface fragmentation rate and milling force, and it not only could slow down the expansion of cracks, but also increase the plastic flow of material, and obtain better edge quality compared with the traditional machining method. Comparing the results of finite element analysis and experimental tests, it shows that the simulation results are in good agreement with that of tests.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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We are very grateful to the National Natural Science Foundation of China (No. 5197052714) for their strong support.
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Peicheng Peng: Methodology, Investigation, Formal analysis, Writing-review & editing. Daohui Xiang: Project administration, Formal analysis, Writing—review & editing. Xiaofei Lei: Data curation, Investigation. Zhanli Shi: Data curation, Investigation. Bo Li: Data curation, Investigation. Gaofeng Liu: Data curation, Investigation. Bo Zhao: Writing—review & editing. Guofu Gao: Writing—review & editing.
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This article is part of the Topical Collection: New Intelligent Manufacturing Technologies through the Integration of Industry 4.0 and Advanced Manufacturing
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Peng, P., Xiang, D., Lei, X. et al. Study on the edge defects of high volume fraction 70% SiCp/Al composites in ultrasonic-assisted milling. Int J Adv Manuf Technol 122, 485–498 (2022). https://doi.org/10.1007/s00170-021-08586-y
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DOI: https://doi.org/10.1007/s00170-021-08586-y