傾斜機能超硬合金モデルの作製における硬さ分布の制御

DOI Web Site 被引用文献1件 参考文献13件

書誌事項

タイトル別名
  • Control of Hardness Distribution in Fabrication of<br>Functionally Graded Cemented Carbide Model
  • ケイシャ キノウ チョウコウゴウキン モデル ノ サクセイ ニ オケル カタサ ブンプ ノ セイギョ

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抄録

Functionally graded cemented carbide (FGCC) models with a hardness distribution are fabricated by combining the powder layer compaction (PLC) technique and CNC milling. In the fabrication of the FGCC model, powders of cemented carbide (WC) with different Co contents are combined by compaction and then the resulting green compact is sintered. The hardness is confirmed to change smoothly around the interface of the WC samples with different Co contents in the sintered FGCC models. To control the hardness distribution of the sintered FGCC models, the influences of fabrication conditions on Co diffusion and movement during sintering are examined. Presintering at temperatures higher than 600 °C is found to be effective for suppressing Co diffusion and movement. Furthermore, residual stress in the sintered FGCC die model is estimated. When the inner layer is presintered at 1300 °C, a compressive residual stress is confirmed to be induced in the inner layer of the sintered FGCC die model.

収録刊行物

  • 塑性と加工

    塑性と加工 52 (608), 1017-1021, 2011

    一般社団法人 日本塑性加工学会

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