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《POWDER METALLURGY TECHNOLOGY》 1994-01
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EFFECTS OF RARE-EARTH ADDITIONS ON CONTROLLING MARTENSITIC PHASE CHANGE OF COBALT PHASE IN CEMENTED CARBIDE

Yang Jiangao; Xiong Ji (Zigong Cemented Carbide Plant,Sichuan 643011)  
It is indicated by the investigation of comparison between addition and non-addition of rareearth elements that transverse breaking strength was obviously improved after appropriate additions of rare-earth in cemented carbide. X-ary quantitative analysis shows the additions of rare-earth can control to greater extent the martensitic phase change of cobalt phase in alloy, remaining more a-Co with face-centered cubic structure. The investigation pointed out that this was the cause of cemented carbide strengthened by rare-earth.
【CateGory Index】: TF125.3
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