書誌事項
- タイトル別名
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- Development of High Modulus Steel Based on Thermodynamic Phase Equilibrium between TiB<SUB>2</SUB> and Ferrite
- TiB2-フェライトの相平衡にもとづく高剛性鋼の開発
- TiB2 フェライト ノ ソウ ヘイコウ ニ モトズク コウ ゴウセイ コウ
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A new TiB2-reinforced steel with an enormously high Young's modulus has been developed for enabling a leaner design of automobile parts. This article describes the high modulus steel (HMS) with an emphasis on its microstructure and potential elastic properties based on the assessed phase equilibria in Fe-Cr-Ti-B system.<BR>The concept was to increase the isotropic Young's modulus by the optimum combination of reinforcing particles and steel matrices, and thermodynamic considerations strongly supported the most effective contribution of TiB2 to this purpose.<BR>Calculated phase diagrams located the narrow two-phase region of ferrite (α)+ TiB2 along the pseudo-binary system of (Fe-17Cr)-TiB2 in a wide temperature range. The proved phase stability and the small solubility of iron/chromium in TiB2 were considered most responsible for maintaining its own high modulus of 540 GPa in the steel matrix.<BR>In conventional powder metallurgy techniques, TiB2 particles were successfully dispersed in the matrix using commercial TiB2 powders, or synthesized through the in-situ reaction of ferro-titanium and ferro-boron powders.<BR>The measured Young's modulus of the HMS agreed well with the theoretically predicted value, and at 46 vol% TiB2, the specific modulus reached twice of those of conventional steels owing to its reduced density.
収録刊行物
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- 鉄と鋼
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鉄と鋼 84 (8), 586-591, 1998
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390001205183361536
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- NII論文ID
- 110001481856
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- NII書誌ID
- AN00151251
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- ISSN
- 18832954
- 00211575
- http://id.crossref.org/issn/00211575
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- NDL書誌ID
- 4535774
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可