毋宇超,郭淼现,郭维诚,周金强.基于二维切削的SiCp/Al复合材料表面损伤形成机制研究[J].表面技术,2024,53(8):145-155. WU Yuchao,GUO Miaoxian,GUO Weicheng,ZHOU Jinqiang.Surface Damage Formation Mechanism of SiCp/Al Composites Based on 2D Cutting[J].Surface Technology,2024,53(8):145-155 |
基于二维切削的SiCp/Al复合材料表面损伤形成机制研究 |
Surface Damage Formation Mechanism of SiCp/Al Composites Based on 2D Cutting |
投稿时间:2023-05-12 修订日期:2023-09-14 |
DOI:10.16490/j.cnki.issn.1001-3660.2024.08.013 |
中文关键词: SiCp/Al复合材料 高速直线电机 切削仿真 表面损伤 去除机制 表面质量 |
英文关键词:SiCp/Al composites high-speed linear motor cutting simulation surface damage removal mechanism surface quality |
基金项目:国家自然科学基金(52275452,52105470) |
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Author | Institution |
WU Yuchao | School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
GUO Miaoxian | School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
GUO Weicheng | School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
ZHOU Jinqiang | Shanghai Aerospace Equipment Manufacturing Company Limited, Shanghai 200245, China |
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中文摘要: |
目的 研究SiCp/Al复合材料切削过程中的表面损伤形成机制。方法 以SiCp/Al复合材料为研究对象,展开基于二维切削的仿真和实验研究,建立了包含铝合金2A14、SiC增强颗粒以及界面特性的SiCp/Al切削仿真模型,对作用于不同SiC颗粒部位的材料表面缺陷进行分析;接着利用高速直线电机搭建能映射二维切削条件的实验平台,在不同材料去除条件下,利用扫描电子显微镜和白光干涉仪对切削表面形貌进行测试,分析和验证切削表面损伤形成条件。结果 SiCp/Al复合材料切削表面损伤机理取决于SiC颗粒相对刀具切削路径的位置:当刀尖作用在SiC颗粒的顶部时,表面损伤主要为基体撕裂、颗粒破碎;当刀尖作用在SiC颗粒的中部时,表面损伤为颗粒破碎导致的裂纹和凹坑;当刀尖作用在SiC颗粒的底部时,表面损伤为颗粒拔出导致的凹坑。随着切削深度的增大,凹坑逐渐增多,表面粗糙度随之增大。结论 利用二维切削模型仿真方法和高速直线电机实验,可以有效研究复合材料切削损伤形成机制。SiC颗粒相对刀具切削路径的位置不同会导致切削损伤不同;SiCp/Al复合材料表面质量会随着切削速度的提升而有所提高。 |
英文摘要: |
The precision machining of silicon carbide particle reinforced aluminum matrix (SiCp/Al) composite with high surface integrity of low damage is a key challenge to ensure the components performance in service. However, due to the different mechanical properties of Al matrix and SiC reinforced phase, the surface damage formation of SiCp/Al composites varies markedly compared with homogeneous metallic materials. In order to investigate the surface damage formation mechanism of SiCp/Al composites, a 2D cutting simulation and experimental test are conducted in the study. |
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