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Bainite Transformation Under Continuous Cooling of Nb-Microalloyed Low Carbon Steel 被引量:10

Bainite Transformation Under Continuous Cooling of Nb-Microalloyed Low Carbon Steel
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摘要 Utilizing Gleeble-1500 thermomechanical simulator, the influences of hot deformation parameters on continuous cooling bainite transformation in Nb-microalloyed low carbon steel were investigated. The results indicate that bainite starting temperature decreases with raising cooling rate and increases with increasing deformation temperature. Deformation has an accelerative effect on the bainite transformation when the specimens are deformed at 950 ℃. When the deformation temperature increases, the effect of deformation on bainite starting temperature is weakened. The amount of bainite is influenced by strain, cooling rate, and deformation temperature. When the specimens are deformed below 900 ℃, equiaxed ferrites are promoted and the bainite transformation is suppressed. Utilizing Gleeble-1500 thermomechanical simulator, the influences of hot deformation parameters on continuous cooling bainite transformation in Nb-microalloyed low carbon steel were investigated. The results indicate that bainite starting temperature decreases with raising cooling rate and increases with increasing deformation temperature. Deformation has an accelerative effect on the bainite transformation when the specimens are deformed at 950 ℃. When the deformation temperature increases, the effect of deformation on bainite starting temperature is weakened. The amount of bainite is influenced by strain, cooling rate, and deformation temperature. When the specimens are deformed below 900 ℃, equiaxed ferrites are promoted and the bainite transformation is suppressed.
出处 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2006年第3期36-39,67,共5页
基金 Item Sponsored by High Technology Development Programof China (863) (2001AA332020) and National Natural ScienceFoundation of China (50271015)
关键词 Nb-microalloyed low carbon steel bainite starting temperature BAINITE equiaxed ferrite retained austenite Nb-microalloyed low carbon steel bainite starting temperature bainite equiaxed ferrite retained austenite
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  • 1CHEN Hongju,LIU Qingyou,HAN Li,et al..Effect of Controlled Rolling and Cooling Schedule on Microstructures and Mechanical Properties of Nb+Ti Microalloyed Strip Steel.JOURNAL OF IRON AND STEEL RESEARCH,1999,11(3):38~43.(陈红桔,刘清友,韩力,等.控轧控冷工艺
  • 2ImaoTamura.Thermomechanical Processing of High-strength Low-alloy Steels.London:1988.133.
  • 3王国栋,刘相华,李维娟,杜林秀,张红梅,袁建光,张丕军.超级Super-SS400钢的工业轧制实验[J].钢铁,2001,36(5):39-43. 被引量:34

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