WC粉末による鋳鉄の表面硬化

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タイトル別名
  • Surface Hardening of Cast Iron Inserted WC Particles
  • WC フンマツ ニ ヨル チュウテツ ノ ヒョウメン コウカ

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抄録

  WC particles were inserted near the surface of gray irons. Particles of three different sizes were inserted individually or mixed with the particles of other alloy elements, The inserted layer was observed from the vertical section with an EPMA. It was confirmed that an inserted layer of about 4 mm thick can be formed without any defects near the surface of gray irons. The base metal of the inserted layer was usually the same as the mother gray iron. However, the Cr or Mo alloying favored the formation of white cast irons. Microstructures of the layer inserting coarse WC particles were different from that of the fine WC particles. The coarse WC particles were bridged by the γ + M3C eutectic layers, however, fine WC particles dispersed uniformly in both eutectic phases. The hardness of the mother gray irons ranged from Hv120 to 200 while the hardness of the Cr alloying inserted layer increased more than Hv700.

収録刊行物

  • 鋳造工学

    鋳造工学 73 (3), 155-160, 2001

    公益社団法人 日本鋳造工学会

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