The Effect of Boron on Hot Ductility of Nb-microalloyed Steels

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概要

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• Two grades of the Nb-containing steel, one modified with B, were examined in order to study the effect of B on the hot ductility. Since the hot ductility loss of the Nb-containing steel during the continuous casting is manifested as surface cracking, the surface thermal schedule including in situ melting was taken into account. The results revealed that addition of B improves the hot ductility of austenite. Two mechanisms for such improvement are proposed that are not based on the presence of intragranular ferrite. These mechanisms concern with depletion of strengthening elements in the austenite lattice through faster kinetics of grain boundary precipitation and non-equilibrium segregation of precipitants.

• 社団法人 日本鉄鋼協会の論文
• 2006-04-15

著者

• Yue Steve

  Department Of Metals And Materials Engineering Mcgill University

• ZARANDI Faramarz

  Department of Metals and Materials Engineering, McGill University

• Zarandi Faramarz

  Department Of Metals And Materials Engineering Mcgill University

関連論文

• Effect of Thermomechanical Processing on the Hot Ductility of a Nb-Ti Microalloyed Steel
• Improvement of Hot Ductility in the Nb-microalloyed Steel by High Temperature Deformation
• Mechanism for Loss of Hot Ductility Due to Deformation during Solidification in Continuous Casting of Steel
• Effect of Microstructure on Static and Dynamic Mechanical Property of a Dual Phase Steel Studied by Shear Punch Testing
• The Effect of Boron on Hot Ductility of Nb-microalloyed Steels
• Impact Toughness and Tensile Properties Improvement through Microstructure Control in Hot Forged Nb-V Microalloyed Steel

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