Ferrite Formation Mechanism in Boron Contained Pearlitic Spheroidal Graphite Cast Iron
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- Igarashi Yoshio
- Casting technology Research Lab., Hitachi Metals, Ltd.
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- Akiyama Shouichi
- Moka Factory, Hitachi Metals, Ltd.
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- Kanno Toshitake
- Kimura Chuzousho Co., Ltd.
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- Kang Ilgoo
- Kimura Chuzousho Co., Ltd.
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- Nakae Hideo
- Lab. Materials. Sci. and Eng., Waseda Univ.
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- Horie Hiroshi
- Faculty of Engineering, Iwate University
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- Hiratsuka Sadato
- Faculty of Engineering, Iwate University
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- Fujikawa Takao
- Technical Research Institute of Mie Prefecture
Bibliographic Information
- Other Title
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- パーライト基地球状黒鉛鋳鉄のほう素によるフェライト化機構
- パーライト キチ キュウジョウ コクエン チュウテツ ノ ホウソ ニ ヨル フェライトカ キコウ
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Abstract
The influence of boron on the ferrite formation in pearlite matrix spheroidal graphite cast iron has been investigated using the advanced analytical equipments such as an SEM and a TEM. The surface of spheroidal graphite in the bull's eye structure, produced by the addition of quite small amount of boron, was analyzed for discussing the ferritizing mechanism. <br> The microstructure in the spheroidal graphite was investigated using the SEM and TEM, and we found the triangular precipitates, consisted of Fe-Si-Cu-B size of 150nm, in the surface layer of the graphite. These precipitates are consisted of the nano-crystal and act as the nucleus sites of flake graphite size of 0.5μm. The formation of the flake graphite due to the ferritizing above their eutectoid temperature, is the key mechanism of the ferrite formation.
Journal
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- Journal of Japan Foundry Engineering Society
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Journal of Japan Foundry Engineering Society 82 (1), 16-22, 2010
Japan Foundry Engineering Society
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Keywords
Details 詳細情報について
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- CRID
- 1390001206510631040
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- NII Article ID
- 10026312982
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- NII Book ID
- AN10514770
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- ISSN
- 21855374
- 13420429
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- NDL BIB ID
- 10548902
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed