Controlled Cooling Process and Mechanical Property of 590MPa Grade Structural Steel with Low Yield Ratio

Jian Kang; Zhao Dong Wang; Guo Yuan; Guo Dong Wang

doi:10.4028/www.scientific.net/AMR.261-263.740

Paper Titles

Crack Closure and Shape Restoration Using NiTi Shape-Memory Alloy
p.721

Fractal Analysis of Mixing in Zinc-Silica Composite Electrolyte by Particle Image Velocimetry
p.725

Atomistic Simulation of Site Preference and Lattice Vibrations in Ut_XAl_12-X ( T = Zr, Nb, Mo and Fe ) and their Related Hydrides
p.730

Atomistic Study on the Structure and Thermodynamic Properties of Afe₂al₁₀ (A = Th, U)
p.735

Controlled Cooling Process and Mechanical Property of 590MPa Grade Structural Steel with Low Yield Ratio
p.740

Distribution of Fe(II) Concentration during Degradation of Rhodamine B by Fenton Reagent
p.744

Corrosion Behaviors of Ultrapure Ferritic Stainless Steels in Simulated Urban Refuse Leachate
p.749

Simulation of M/M/1 Queue Model Based on WITNESS
p.753

Research on the Cement-Based Smart Lost-Circulation Control Material with Cu-Zn-Al SMA
p.757

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 261-263Controlled Cooling Process and Mechanical Property...

Controlled Cooling Process and Mechanical Property of 590MPa Grade Structural Steel with Low Yield Ratio

Abstract:

To develop 590MPa grade low yield ratio steel for high-rise buildings, the new generation TMCP based on ultra fast cooling (UFC) technology was proposed. Then effects of UFC final temperature on microstructure and mechanical properties were investigated. The results show that the control of composite phases is important to obtain high strength, low yield ratio and high work hardening exponent. When UFC final temperature is 521°C, 22.5% (volume fraction) M-A phases are distributed in bainite ferrite matrix, and the excellent overall properties can be obtained, i.e., the yield strength is 570MPa, tensile strength 760MPa, yield ratio 0.75 and percentage elongation 22% with the Charpy impact energy 284J at -40°C. All these indexes can meet the requirements of relevant standards.