Effect of Copper on Ferritization of Spheroidal Graphite Cast Iron

• Kishitake Katsuhiko

  九州工業大学工学部　工博

• Era Hidenori

  九州工業大学工学部　工博

• Ishinuki Hirohumi

  九州工業大学大学院〔現　菱電セミコンダクタシステムエンジニアリング（株）〕

• Nagayoshi Hideaki

  日立金属（株）九州工場　工博

Bibliographic Information

Other Title

• 球状黒鉛鋳鉄のフェライト化に及ぼす銅の影響
• キュウジョウ コクエン チュウテツ ノ フェライトカ ニ オヨボス ドウ ノ

Abstract

  Ferritization of spheroidal graphite cast iron (SGI) containing tin or copper has been investigated. The SGIs of different contents of copper or tin were isothermally held for various lengths of time below the eutectoid temperature after austenitizing. Tin in SGI promotes pearlite formation and retards ferrite formation, while copper in SGI retards both ferrite and pearlite formation. The onset of ferrite formation is markedly retarded in SGIs containing 1% Cu or above accompanied by an incubation period of transformation. Furthermore, growth rate of ferrite decreases with increasing copper content. Retardation of ferrite growth is brought about by the onset of pearlite formation. The growth rate of pearlite is markedly higher than that of ferrite, except at specific temperature range. It is found that ferrite formation tends to be retarded in the inner part of large SGI blocks containing 0.5 % Cu.

Journal

• Journal of Japan Foundry Engineering Society

  Journal of Japan Foundry Engineering Society 70 (3), 169-174, 1998

  Japan Foundry Engineering Society

Keywords

• spheroidal graphite cast iron
• copper addition
• eutectoid transformation
• growth rate of ferrite
• incubation period

Details

• CRID: 1390282681483537408
• NII Article ID: 10002553552
• NII Book ID: AN10514770
• DOI: 10.11279/jfes.70.169
• ISSN: 21855374
• ISSN: 13420429
• NDL BIB ID: 4437161
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4437161
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed