Effects of Finely Dispersed Sulfides on Microstructure and Impact Property of Ferrite-Pearlitic Steel.
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- Tsunekage Norimasa
- Technological Research Laboratory, Sanyo Special Steel Co., Ltd.
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- Tsubakino Harushige
- Department of Material Science and Engineering, Faculty of Engineering, Himeji Institute of Technology
Bibliographic Information
- Other Title
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- フェライト・パーライト鋼の組織と衝撃特性に及ぼす硫化物微細分散の影響
- フェライト パーライト コウ ノ ソシキ ト ショウゲキ トクセイ ニ オヨボス リュウカブツ ビサイ ブンサン ノ エイキョウ
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Description
For the purpose of improving the impact properties of ferrite-pearlitic microalloyed steels through the refinement of structure, the steels with finely dispersed sulfides were produced by P/M process. In these steels, average manganese sulfide size was one-tenth of that in conventional steels (I/M steels) and the number of inclusions was increased about two digits. The ferrite-pearlite grain size was decreased by these inclusions. Although the impact values of the steels were increased by refinement of ferrite-pearlitic structure, they were decreased by the increase of the number of inclusions. Consequently, the impact value of the steels were not improved in comparison with conventional steels.<BR>Therefore, it is necessary to decrease the number of sulfides by controlling the sulfides slightly larger than those in the P/M steels. In this case, it is expected that the ferrite-pearlite grain size will become finer by the increase of intragranular ferrite in spite of increasing the prior austenite grain size.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 49 (3), 172-177, 2002
Japan Society of Powder and Powder Metallurgy
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Keywords
Details 詳細情報について
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- CRID
- 1390001206308339072
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- NII Article ID
- 10008007522
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 6126315
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed