Fracture Mode of High Strength Steel Thin Plates with Elliptical Hole

2011 ◽  
Author(s):  
Wanzhen Wang ◽  
Lanying Jiang
Keyword(s):  
Fracture Mode ◽  
High Strength Steel ◽  
Elliptical Hole ◽  
High Strength ◽  
Thin Plates

Influence of Heat Treatment on the Failure Mode of High Strength Steel in Aggressive Environments

1982 ◽  
Vol 40 ◽  
pp. 464-465
Author(s):  
R. Padmanabhan ◽  
W. E. Wood
Keyword(s):  
Heat Treatment ◽  
Stress Intensity ◽  
Failure Mode ◽  
Applied Stress ◽  
Fracture Mode ◽  
High Strength Steel ◽  
High Strength ◽  
Nacl Solution ◽  
300M Steel

The predominant fracture mode during hydrogen assisted environmental failure of 300M steel is intergranular. However, limited attempts have been made to study the failure mode, both as a function of applied stress intensity and as a function of heat treatment. In this investigation, studies were conducted for 300M steel specimens subjected to load in a 3.5% NaCl solution.

Fracture Test on High Strength Steel Plates with Elliptical Hole

2010 ◽  
Vol 44-47 ◽  
pp. 2647-2650
Author(s):  
Wan Zhen Wang ◽  
You Qian Huang ◽  
Ren Quan Su ◽  
Xin Tang Wang
Keyword(s):  
High Strength Steel ◽  
Elliptic Hole ◽  
Elliptical Hole ◽  
High Strength ◽  
Fracture Load ◽  
Displacement Curve ◽  
Notch Depth ◽  
Fracture Ductility ◽  
Notch Sharpness ◽  
Load Displacement

In order to study fracture mechanics of high strength steel with the moderate thickness, fracture tests were performed on 10 plates with elliptical hole fabricated from high strength steel Q345 with the thickness of 16mm. The effect of the notch sharpness (the ratio of the length of short axis to that of long axis of elliptic hole, b/a) and the notch depth (the ratio of the length of long axis of the elliptic hole to the width of plate, 2a/w) on fracture model of high strength steel was examined. Test results show that the first crack initiates at the notch edge. The fracture ductility is lower for the specimens with the sharper notch (a smaller ratio b/a) and the deeper notch (a larger ratio 2a/w), and the point of crack load lies in hardening phase of load-displacement curve. The fracture ductility is higher for the specimens with the obtuse notch (a larger ratio b/a), and the point of fracture load lies in necking phase of load-displacement curve. The ultimate strength of notched plates is independent of the notch sharpness (b/a) and the notch depth (2a/w).

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