Tensile Properties of Simulated Thin Slab Cast and Direct Rolled Low-carbon Steel Microalloyed with Nb, V and Ti

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概要

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• The hot direct rolling of thin slab cast microalloyed, low-carbon steels was simulated on a laboratory scale. The carbon content of the steels ranged from 0.026 to 0.11 wt%. In steels microalloyed with niobium, a significant loss of yield and tensile strength occurred when the carbon content exceeded approximately 0.07 wt%. Large, eutectic NbCN precipitates, which formed during solidification, were observed at higher carbon contents. It was concluded that when the carbon content of the steel exceeded a critical level, segregation of niobium to the liquid phase during solidification of the castings resulted in the presence of the eutectic NbCN. This effectively removed a significant fraction of the niobium from being able to participate in precipitation strengthening. The addition of up to 0.09 wt% V, and of V plus up to 0.025 wt% Ti, to steel containing 0.04 wt% Nb failed to increase yield or tensile strength.

• 社団法人 日本鉄鋼協会の論文
• 2000-04-15

著者

• Park J.s.

  Inchon Iron And Steel Co.ltd.

• AJMAL M.

  The Engineering University, Dept.of Metallurgical Engineering and Materials Science

• PRIESTNER R.

  University of Manchester/UMIST, Materials Science Center

• Ajmal M.

  The Engineering University Dept.of Metallurgical Engineering And Materials Science

• Priestner R

  University Of Manchester/umist Materials Science Center

関連論文

• Tensile Properties of Simulated Thin Slab Cast and Direct Rolled Low-carbon Steel Microalloyed with Nb, V and Ti

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