Improved Model of Kinetics of Strain Induced Precipitation and Microstructure Evolution of Nb Microalloyed Steels during Multipass Rolling
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概要
- 論文の詳細を見る
One of the main problems of empirical and semi-empirical models that are used to predict austenite microstructure evolution during hot rolling is their limited range of applicability regarding chemical compositions. This paper aims to improve a previous microstructural model paying special attention to the development of a more general equation for the prediction of the onset of strain induced precipitation in Nb microalloyed steels. This has been done with the help of new expressions describing the kinetics of strain induced precipitation as a function of the chemical composition. Moreover, the evolution of strain induced Nb precipitation was also modeled in order to determine the amount of Nb precipitated after each strain pass. The predictions obtained with the new model have been compared to results obtained in multipass laboratory tests using several Nb microalloyed steels. The model allows us to better understand the complex interactions occurring between Nb and microstructural softening depending on composition and process parameters.
- 社団法人 日本鉄鋼協会の論文
- 2008-10-15
著者
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Rodriguez-Ibabe J.
CEIT and Tecnun (University of Navarra)
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López B.
CEIT and Tecnun (University of Navarra)
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Lopez B
Univ. Of Navarra Basque Country Esp
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Lopez B.
Ceit And Tecnun (univ. Of Navarra)
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Rodriguez-ibabe J.
Ceit And Tecnun (univ. Of Navarra)
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Rodriguez-ibabe J.m.
Ceit And Esll Univ.of Navarra
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PEREDA B.
CEIT and Tecnun (Univ. of Navarra)
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Lopez B.
Ceit And Esll Univ.of Navarra
関連論文
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- Role of Vanadium Microalloying in Austenite Conditioning and Pearlite Microstructure in Thermomechanically Processed Eutectoid Steels
- Improved Model of Kinetics of Strain Induced Precipitation and Microstructure Evolution of Nb Microalloyed Steels during Multipass Rolling
- Effect of Mo on Dynamic Recrystallization Behavior of Nb-Mo Microalloyed Steels
- Modeling of Austenite Grain Size Distribution in Nb Microalloyed Steels Processed by Thin Slab Casting and Direct Rolling(TSDR) Route
- Interaction between Recrystallization and Precipitation during Multipass Rolling in a Low Carbon Niobium Microalloyed Steel
- Influence of the Prior Austenite Microstructure on the Transformation Products Obtained for C-Mn-Nb Steels after Continuous Cooling
- Influence of Thermomechanical Processing on the Austenite-Pearlite Transformation in High Carbon Vanadium Microalloyed Steels
- Static Recrystallization Behaviour of a Wide Range of Austenite Grain Sizes in Microalloyed Steels