Control of Yield Ratio Based on Ultra Fast Cooling and Mechanical Behaviors of High Strength Aseismic Steel

Jian Kang; Guo Yuan; Zhao Dong Wang

doi:10.4028/www.scientific.net/AMR.228-229.505

Paper Titles

The Mechanical Analysis of the Composite Reinforced Circular Saw Blade
p.484

Numerical Simulation of Transport Characteristics of Porous Metal Fiber Sintered Felts Used in Microreactor for Hydrogen Energy
p.490

Effect of Ruthenium on the Performance of Iron-Based Catalyst for CO Hydrogenation
p.496

Study on Mechanism of Laser Thermal Damage on Piston
p.500

Control of Yield Ratio Based on Ultra Fast Cooling and Mechanical Behaviors of High Strength Aseismic Steel
p.505

Study on the Electrical Arc Ablation Performance of Nano-SiC_W Reinforced Cu-Matrix Composites
p.509

Enhanced Performance of ZnO-Coated LiNi_0.5Mn_1.5 O₄ Cathode Materials for Li-Ion Battery
p.514

Research on Group Decision-Making Optimization Model of Urban Railway Traffic Network Scheme
p.519

Coupling Effect Analysis of 3D Interior Structural-Acoustic Problems Using Wave Based Method
p.526

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 228-229Control of Yield Ratio Based on Ultra Fast Cooling...

Control of Yield Ratio Based on Ultra Fast Cooling and Mechanical Behaviors of High Strength Aseismic Steel

Abstract:

The new generation TMCP process based on ultra fast cooling has recently developed rapidly. In order to develop the low yield ratio constructional steel, the effects of cooling finishing temperature on microstructure and yield ratio of steels were studied primarily. The results show that the high strength and low yield ratio can be achieved by multiphase including M-A hard second phase and bainite ferrite soft matrix. When UFC final temperature is 521°C, the uniform M-A phases with volume fraction of 22.5% are distributed on bainite ferrite matrix, and then 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 come up to the relevant standards. The steel with lower yield ratio can be subjected to larger plastic deformation before the necking instability.