摩擦攪拌プロセスによるフェライト球状黒鉛鋳鉄の表面硬化

書誌事項

タイトル別名
  • Surface Hardening of Ferritic Spheroidal Graphite Cast Iron by Friction Stir Processing
  • マサツ カクハン プロセス ニ ヨル フェライト キュウジョウ コクエン チュウテツ ノ ヒョウメン コウカ

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抄録

A ferritic spheroidal graphite cast iron (FCD450) is difficult to harden using a conventional surface hardening method, because the carbon content in the matrix is very low. In order to solve this problem, the friction stir processing (FSP) was used in this study as a new hardening method of cast irons. The authors have clarified in a previous study that the pearlitic cast iron, such as FC300 and FCD700, can be hardened using the friction stir processing and that there are several advantages, such as a higher hardness and no required post surface machining. In this study, it was clarified that a Vickers hardness of about 800HV is obtained due to the formation of fine martensite even for ferritic spheroidal graphite cast irons, although the optimal process range is much lower than that of the pearlitic cast iron due to the diffusion of carbon in the matrix which is required to obtain a hardness.

収録刊行物

  • 鋳造工学

    鋳造工学 82 (11), 674-679, 2010

    公益社団法人 日本鋳造工学会

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