| 碳化硅增强颗粒含量和尺寸对铝基复合材料超精密车削表面的影响 |
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| 引用本文： | 葛英飞,徐九华,杨辉,罗松保,傅玉灿. 碳化硅增强颗粒含量和尺寸对铝基复合材料超精密车削表面的影响[J]. 机械工程材料, 2007, 31(6): 12-14,18 |
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| 作者姓名： | 葛英飞 徐九华 杨辉 罗松保 傅玉灿 |
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| 作者单位： | 南京航空航天大学机电工程学院,江苏南京,210016;北京航空精密机械研究所,北京,100076 |
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| 摘 要： | 用聚晶金刚石刀具(PCD)研究了增强颗粒的含量、尺寸等对SiC颗粒增强铝基复合材料超精密车削表面的影响.结果表明:SiC增强颗粒的去除方式主要有拔出、破碎和切断等,SiC颗粒的含量和平均尺寸越大,其拔出和破碎现象就越多,复合材料获得的加工表面粗糙度值也越大;当SiC颗粒主要以切断方式被去除时,可望获得含有较少坑洞和裂纹等加工缺陷的超精密切削表面.
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| 关 键 词： | SiCp/Al复合材料 超精密车削 表面粗糙度 |
| 文章编号： | 1000-3738（2007）06-0012-03 |
| 修稿时间： | 2006-07-242006-10-18 |
Influence of Fraction and Size of SiC Reinforcement Particles on Ultra-precision Turning Surfaces of Aluminum Matrix Composites |
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| GE Ying-fei,XU Jiu-hua,YANG Hui,LUO Song-bao,FU Yu-can. Influence of Fraction and Size of SiC Reinforcement Particles on Ultra-precision Turning Surfaces of Aluminum Matrix Composites[J]. Materials For Mechanical Engineering, 2007, 31(6): 12-14,18 |
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| Authors: | GE Ying-fei XU Jiu-hua YANG Hui LUO Song-bao FU Yu-can |
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| Abstract: | A polycrystalline diamond tool was selected to investigate the influence of fraction and size of reinforcements on the machined surface of SiC-particle-reinforced aluminum matrix composites. There are three removing mechanisms, i.e. pulling out, crushing and cutting off during turning this kind of material When the composite have a higher volume/weight fraction and bigger mean size of SiC particulate reinforcement, the number of particles that were pulled out or crushed is bigger too. This resultes in a high value of the machined surface roughness. A better ultra-precision turning surface that have fewer pits and cracks could be expected when SiCp was removed mainly in the mode of cutting off mechanism. |
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| Keywords: | SiCp/Al composites ultra-precision turning surface roughness |
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