2634 金属間化食物Fe_3Alの被削性(S75-1 先端材料とレーザー加工(1),S75 先端材料とレーザー加工)

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Intermetallic compound Fe_3Al (Fe-16mass%Al) has been processed by reactive sintering process, and the machinability has been investigated by dry turning. In cutting Fe_3Al by cemented carbide tool, the tool life were approximately one tenth of that in cutting carbon tool steel SK3 because of intense flank wear. The tool life in cutting Fe_3Al by P20 was longer than K10, and cermet tool reached to tool life by chipping at the whole cutting speed measured. The roughness of finished surface in cutting Fe_3Al by cemented carbide tool was mach smaller than SK3. However, in cutting by cermet, the roughness showed a sharp rise due to chipping. Cemented carbide P20 is suitable for cutting Fe_3Al, further, highly accurate cutting is possible in Fe_3Al because of for the good finished surface.
2005-09-18