Characterization and Modeling of Ductile Damage in Structural Steel at Low and Intermediate Strain Rates

2012 ◽  
Vol 138 (9) ◽  
pp. 1186-1194 ◽  
Author(s):  
Farid H. Abed ◽  
Adil K. Al-Tamimi ◽  
Reem M. Al-Himairee
Keyword(s):  
Structural Steel ◽  
Ductile Damage ◽  
Strain Rates ◽  
Intermediate Strain Rates

Characteristics of Hot Ductility and Fracture in Micro-Alloyed Q345B Structural Steel

2011 ◽  
Vol 194-196 ◽  
pp. 150-156 ◽  
Author(s):  
Fang Dong ◽  
Cheng Su ◽  
Yuan Yuan Bai
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Continuous Casting ◽  
Structural Steel ◽  
Void Nucleation ◽  
Hot Ductility ◽  
Strain Rates ◽  
Casting Condition ◽  
Temperature Range ◽  
Scanning Electron

Hot-ductility tests of the microalloyed Q345B structural steel were performed in a tensile machine of Gleeble-1500D at different strain rates of 1.5•10-3/s 、2.5•10-3/s and 2•10-2/s and at temperature range from 1300°C to 700°C(Δ T=100°C ), which are close to the continuous casting condition of steel. Fracture surfaces were examined using a scanning electron microscope; it was found that the hot decrease as strain rate decrease, because the void growth mechanism predominates over void nucleation, giving time for nucleation cracks to grow. The minimum ductility was found at about 800°C for the strain rates of 1.5•10-3/s and 2.5•10-3/s, and the fracture was intergranular. The steel has good plasticity in temperature range from 1200°C to 900°C which is suitable for straighten operation.

scholarly journals A modified servo-hydraulic machine for testing at intermediate strain rates

2009 ◽  
Vol 36 (3) ◽  
pp. 460-467 ◽  
Author(s):  
Ramzi Othman ◽  
Pierrick Guégan ◽  
Georges Challita ◽  
Franck Pasco ◽  
Daniel LeBreton
Keyword(s):  
Strain Rates ◽  
Hydraulic Machine ◽  
Intermediate Strain Rates
Sign in / Sign up

Export Citation Format

Share Document