Machinability of SiC particle reinforced aluminum alloy composite material.

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  • ＳｉＣ粒子強化アルミニウム合金基複合材料の被削性
  • SiC リュウシ キョウカ アルミニウム ゴウキンキ フクゴウ ザイリョウ ノ

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Aluminum alloy matrix composite materials are expected to be used for various applications because of the low density and superior properties at high temperatures. However, the composite materials give problems in the tool wear because of their difficulty in cutting. In this work the turning test for SiC particle reinforced aluminum alloy composite materials was performed and the effects of SiC particle size and content on the tool wear and surface roughness were discussed. The tool wear increased with increasing SiC particle size and content. Only the diamond tool was useful to cut the SiC particle reinforced aluminum alloy composite material. In the case of using a carbide tool, the cutting condition should be low cutting speed as well as high feed rate. To suck the chips during cutting was effective to decrease the tool wear. In the wet cutting, however, to suck the chips resulted in the increased tool wear. While the increased SiC particle size resulted in the worsened surface roughness, the increased SiC content improved the surface roughness.

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