Summary
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1.
The possibility of considerably accelerating recrystallization (i. e. process) annealing of low-carbon steel by heating at above 1000°C (1800°F)/second to temperatures around the critical has been established.
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2.
Holding for a few seconds after rapid high temperature heating completes recrystallization, produces a fine-grained structure and high mechanical properties.Rapid cooling (e.g. water quenching) after such holding prevents quench-aging effects and the steel preserves high ductility and strength.
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3.
In organizing rapid process annealing of low-carbon steel, due regard must be paid to the kinetics of phase changes in rapid heating and cooling.
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L'vov, G.K. Accelerated recrystallization of low carbon steel. Met Sci Heat Treat 1, 11–16 (1959). https://doi.org/10.1007/BF00820268
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DOI: https://doi.org/10.1007/BF00820268