Decomposition of Coarse Grained Austenite During Accelerated Cooling of C-Mn Steels

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概要

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• The simulation of microstructural evolution of a range of C–Mn steels following high-speed continuous casting and controlled cooling was carried out using quench dilatometry. An initial coarse-grained austenitic microstructure (as expected during casting of low carbon steel strip) was produced by a high temperature austenitising treatment followed by cooling at rates up to 600°C/s. Continuous cooling transformation (CCT) diagrams for a range of cooling schedules were constructed. It was found that both cooling rate and steel composition produces a range of final microstructures from polygonal ferrite to martensite with a concomitant range in hardness. Coarse grained austenite was found to promote the formation of degenerate pearlite and bainitic microstructures. The role of alloying additions, in combination with cooling rate is discussed in the context of microstructural development and mechanical properties of as-cast low carbon steel strip.

• 社団法人 日本鉄鋼協会の論文
• 2002-01-15

著者

• Manohar P.

  Bhp Institute For Steel Processing And Products University Of Wollongong

• Ferry M.

  School Of Materials Science And Engineering University Of New South Wales

• THOMPSON M.

  Hot Rolling Group-BHP Integrated Steel

• THOMPSON M.

  Hot Rolling Group, BHP Integrated Steel

関連論文

• Recrystallization Kinetics of Low and Ultra Low Carbon Steels during High-rate Annealing
• Decomposition of Coarse Grained Austenite During Accelerated Cooling of C-Mn Steels
• Influence of Hot Deformation Conditions on the Annealing Behaviour of Cold Rolled Ultra Low Carbon Steel
• Simulation of Hot-band Microstructure of C-Mn Steels during High Speed Cooling

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