Paper Title:
Effect of Cold Reduction Ratio and Annealing Temperature on Microstructure and Mechanical Property of 240MPa Grade High Strength if Steel
  Abstract

Hot rolled 240MPa grade high strength IF steel sheet was used to study the effect of cold reduction ratio and annealing temperature on the microstructures and mechanical properties of experimental steel. The experimental results showed that the recrystallization has finished under different annealing temperature followed 75% to 85% cold reduction ratio. To the experimental steel of high coiling temperature, The yield strength, tensile strength ,elongation percentage, yield point elongation, the plastic strain ratio and strain hardening exponent were approximate 260MPa, 445MPa, 37.5%, 2.14%, 0.25, 2.0. To the experimental steel of low coiling temperature, that were approximate 235MPa, 369MPa, 38.8%, 1.73%, 0.26, 2.1. Therefore, the suggested the optimal annealing temperature is 840 °C, cold reduction ratio is 75%, and it obtains optimally match of high strength and punching property.

  Info
Periodical
Chapter
Chapter 1: Surface Engineering/Coatings
Edited by
Prasad Yarlagadda, Yun-Hae Kim, Zhijiu Ai and Xiaodong Zhang
Pages
23-28
DOI
10.4028/www.scientific.net/AMR.337.23
Citation
M. L. Wang, L. Xiao, Z. W. Zheng, "Effect of Cold Reduction Ratio and Annealing Temperature on Microstructure and Mechanical Property of 240MPa Grade High Strength if Steel", Advanced Materials Research, Vol. 337, pp. 23-28, 2011
Online since
September 2011
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Price
$32.00
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