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| Microstructure and Textural Evolution of Micro-carbon DP Steel during the Heating Stage of Continued Annealing Process |
| WANG Zhigang1* ZHAO Aimin2 YE Jieyun1 ZHAO Zhengzhi2 |
1. School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000
2. Research Institute of Metallurgy Engineering, University of Science and Technology Beijing, Beijing 100083 |
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Cite this article:
WANG Zhigang* ZHAO Aimin YE Jieyun ZHAO Zhengzhi. Microstructure and Textural Evolution of Micro-carbon DP Steel during the Heating Stage of Continued Annealing Process. Chinese Journal of Materials Research, 2013, 27(6): 561-568.
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Abstract The microstructure and textural evolution of micro-carbon DP steel during the heating stage of continued annealing process was studied using SEM, XRD and EBSD technique. Results show that, the microstructure of hot-rolled plate consisted of ferrite and degraded pearlite. Deformed elongated ferrtite grains and deformed band was observed during cold rolling process. During the initial stage of recrystallization (from 720℃ to 750℃), the volume fraction of polygonal ferrite increased about 30%, and the deformed band easily induced the {001}~{112}<110> oriented grains nucleation and growth priority. During the latter stage of recrystallization (from 750℃to 780℃), ferrite was almost fully recrystallized, <111>//ND fiber grain grew up and gradually swallowed <110>//RD grain. The intensity of {001} <110> orientation significantly increased due to carbide dissolution during high-temperature annealing, and the <111>//ND fiber texture hardly affected by transformation.
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分类号: TG115.2
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TG14.7
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| Fund: Supported by National Natural Science Foundation of China No. 50904006 and Fundamental Research Funds for the Central University of China No. FRTTP10001A. |
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