Investigating and Understanding the Bending Fatigue Response and Fracture Behavior of Two High Strength Steels

2013 ◽  
Vol 2 (1) ◽  
pp. 20130024
Author(s):  
K. Manigandan ◽  
T. S. Srivatsan ◽  
T. Quick
Keyword(s):  
Fracture Behavior ◽  
High Strength Steels ◽  
High Strength ◽  
Bending Fatigue

Analysis of fracture behavior of high-strength steels in tension after fire exposure

2021 ◽  
Vol 231 ◽  
pp. 111750
Author(s):  
Wen-Yu Cai ◽  
Jian Jiang ◽  
Yan-Bo Wang ◽  
Guo-Qiang Li
Keyword(s):  
Fracture Behavior ◽  
High Strength Steels ◽  
High Strength ◽  
Fire Exposure

Mechanisms governing cyclic fracture behavior of two high-strength steels: role of composition and microstructure

2012 ◽  
Vol 1 (4) ◽  
pp. 170-184 ◽  
Author(s):  
T. S. Srivatsan ◽  
K. Manigandan ◽  
T. Quick ◽  
M. L. Schmidt
Keyword(s):  
Fracture Behavior ◽  
High Strength Steels ◽  
High Strength ◽  
Cyclic Fracture

Internal Fatigue Failure Mechanism of High Strength Steels in Gigacycle Regime

2008 ◽  
Vol 378-379 ◽  
pp. 65-80 ◽  
Author(s):  
Kazuaki Shiozawa ◽  
Lian Tao Lu
Keyword(s):  
Fatigue Behavior ◽  
High Strength Steels ◽  
High Strength ◽  
Internal Crack ◽  
Bending Fatigue ◽  
The Matrix ◽  
Carbide Distribution ◽  
Fish Eye ◽  
Granular Morphology ◽  
Very High

Gigacycle fatigue behavior in high-strength steels tested under rotary bending fatigue was summarized in this paper. Characteristic of the very high cycle fatigue is to be caused the transition of fracture mode from surface-induced fracture to subsurface inclusion-induced one. In the vicinity of an inclusion at the origin of internal crack, granular-bright-facet (GBF) area was formed during extremely long fatigue cycles. It was pointed out that the formation of GBF area was an important factor for the control of the internal fatigue fracture in gigacycle regime. The GBF area revealed a very rough granular morphology compared with the area outside the GBF inside the fish-eye zone, and was related to the carbide distribution in the microstructure of the matrix. From the detailed observation of fracture surface and computer simulation by FRASTA method, the GBF area formation mechanism in a gigacycle fatigue regime was proposed as the ‘dispersive decohesion of spherical carbide model’.

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