| 摘要 |
The invention provides an article selected from composite rotary cutting tools and composite rotary cutting tool blanks. The article comprises an elongate portion including a first region (31) comprising a first cemented carbide, and a second region (32) autogenously bonded to the first region (31) and comprising a second cemented carbide, wherein at least one of the first cemented carbide and the second cemented carbide comprises a hybrid cemented carbide comprising a cemented carbide dispersed phase, and a cemented carbide continuous phase. At least one of the cemented carbide dispersed phase and the cemented carbide continuous phase comprises at least 0.5 percent by weight of cubic carbide based on the weight of the phase including the cubic carbide. |
