Recrystallization kinetics and the mechanical properties of low-carbon steel during high-temperature annealing in electric furnace
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In this study, we investigated the microstructures and mechanical properties of annealed cold-rolled low-carbon steels. The specimens were subjected to different annealing temperatures and durations in an electric furnace to investigate their recrystallization phenomena. Recrystallization kinetics were analyzed through microstructural evolution by evaluating various mechanical properties. The results showed that the samples annealed at 700 °C were fully recrystallized with equiaxed grains, whereas equiaxed recrystallized grains began to grow in the samples annealed at 800 °C after 10 min of soaking. Electron backscatter diffraction grain orientation spread maps were used to quantify the percentage of recrystallized grains as a function of annealing temperature and soaking time. The samples annealed at 800 °C with 10 min of soaking exhibited good elongation (approximately 38%) and tensile strength (exceeding 270 MPa).
Abstract
In this study, we investigated the microstructures and mechanical properties of annealed cold-rolled low-carbon steels. The specimens were subjected to different annealing temperatures and durations in an electric furnace to investigate their recrystallization phenomena. Recrystallization kinetics were analyzed through microstructural evolution by evaluating various mechanical properties. The results showed that the samples annealed at 700 °C were fully recrystallized with equiaxed grains, whereas equiaxed recrystallized grains began to grow in the samples annealed at 800 °C after 10 min of soaking. Electron backscatter diffraction grain orientation spread maps were used to quantify the percentage of recrystallized grains as a function of annealing temperature and soaking time. The samples annealed at 800 °C with 10 min of soaking exhibited good elongation (approximately 38%) and tensile strength (exceeding 270 MPa).
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