書誌事項
- タイトル別名
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- Effects of Temperature and Strain Rate on Stress-Strain Curves for Dual-Phase Steels and Their Calculations by Using the Kocks-Mecking Model
- Dual-Phase鋼の応力-ひずみ曲線におよぼす温度とひずみ速度の影響とKocks-Meckingモデルによる定式化
- Dual Phase コウ ノ オウリョク ヒズミ キョクセン ニ オヨボス オンド ト ヒズミ ソクド ノ エイキョウ ト Kocks Mecking モデル ニ ヨル テイシキカ
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抄録
Effects of temperature and strain rate on stress–strain curves for two types of dual-phase (DP) steel with different carbon contents were investigated from the viewpoints of tensile tests and the Kocks–Mecking (KM) model based on thermal activation theory. In the tensile tests, flow stress increased but elongation decreased with decreasing temperature or increasing strain rate. Uniform elongation for each DP steel was almost independent of deformation temperature between 123 and 373K. In the comparison of strain rate sensitivity exponent (m), the m-value increased with decreasing the volume fraction of martensite. The calculated true stress–true strain curves by using the KM model agreed with the measured ones at various temperatures and strain rates for the DP steels. In terms of the parameters for the KM model, the athermal stress and mechanical threshold stresses were different between the two types of DP steel. This seems to be associated with the difference of volume fractions of ferrite and martensite.
収録刊行物
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- 鉄と鋼
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鉄と鋼 97 (4), 201-208, 2011
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
- 1390001205125727104
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- NII論文ID
- 130000673743
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- NII書誌ID
- AN10528571
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- ISSN
- 1341688X
- 18832954
- 00211575
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- COI
- 1:CAS:528:DC%2BC3MXks1KlsLY%3D
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- NDL書誌ID
- 11071720
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- 本文言語コード
- ja
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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