Determination of Optimal Coiling Temperature and Cold Reduction Ratio of 260MPa Grade High Strength Nb-IF Steel

Abstract:

Hot rolled 260MPa grade high strength Nb-IF steel sheet was used to study the effect of coiling temperature and cold reduction ratio on the microstructures and mechanical properties. The experimental results showed that the recrystallization has finished. Under 650°Ccoiling temperature and 75% cold reduction ratio, and under 600°C or 700°C coiling temperature and 65% cold reduction ratio, the plastic strain ratio r value and the strain hardening exponent n value were reached the maximum, and respectively, the r value was approximate 1.8, the n value was approximate 0.26. That obtains optimally match of high strength and punching property.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 148-151
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.148
• Online since: November 2011
• Authors: Min Li Wang, Zhi Wang Zheng, Li Xiao
• Keywords: Coiling Temperature, Cold Reduction Ratio, High Strength Nb-IF Steel

References

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