scholarly journals Residual Stress Generation at Crack Tip under Thermomechanical Effects of Aluminum Alloy 2024-T3: Numerical Modelisation

2020 ◽  
Vol 44 (1) ◽  
pp. 59-65
Author(s):  
Tayeb Kebir ◽  
Mohamed Benguediab ◽  
Mohamed Bouamama ◽  
Zine Harchouche
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Crack Tip ◽  
Stress Generation ◽  
Aluminum Alloy 2024 ◽  
Thermomechanical Effects

Time dependent hardness and residual stress reduction in a shot-peened aluminum alloy 2024-T351

2016 ◽  
Vol 58 (11-12) ◽  
pp. 997-1000
Author(s):  
Omar Suliman Zaroog ◽  
Mohd Rashdan Isa ◽  
Muhammad Zulhimi Bin Mohd Mohni
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Reduction ◽  
Time Dependent ◽  
Aluminum Alloy 2024

Numerical estimation of the effects of microcavities on the plastic zone size ahead of the crack tip in aluminum alloy 2024 T3

2009 ◽  
Vol 30 (3) ◽  
pp. 752-757 ◽  
Author(s):  
B. Bachir Bouiadjra ◽  
M. Elmeguenni ◽  
M. Benguediab ◽  
M. Belhouari ◽  
M. Nait-Abdelaziz
Keyword(s):  
Aluminum Alloy ◽  
Plastic Zone ◽  
Crack Tip ◽  
Plastic Zone Size ◽  
Numerical Estimation ◽  
Zone Size ◽  
Aluminum Alloy 2024

scholarly journals Role of Crack-Tip Residual Stresses in Stress Corrosion Behavior of Pre-stressing AA7020

2019 ◽  
Vol 9 (03) ◽  
Author(s):  
Ashish Thakur
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Stress Corrosion Cracking ◽  
Crack Tip ◽  
Corrosion Cracking ◽  
Compressive Residual Stresses

This paper analyzes stress corrosion cracking (SCC) of pre-cracked samples in the presence of compressive residual stresses generated in the vicinity of the crack tip during fatigue pre-cracking. Research focuses on the role of cracktip residual stresses of compressive nature, generated by fatigue loading, in stress corrosion cracking of pre-cracked samples of medium high strength aluminum alloy 7020 subjected to localized anodic dissolution and hydrogen assisted cracking. Fatigue pre-cracking load on the samples generates compressive residual stresses in the vicinity of the crack tip which improve the stress corrosion behavior of the aluminum alloy by delaying either the metal dissolution or the hydrogen entry, thus increasing the fracture load in an aggressive environment. The rice model of the residual stress distribution in the vicinity of a crack tip may be usedto explain these retardation effects by estimating the stress level and plastic zone size. Microscopically, compressive residual stress produce a transition topography between the fatigue pre-crack and the cleavage-like (unstable) fracture mode.

Numerical Simulation on Residual Stress Generation in the Crack Tip of ASME P92 Steel

2011 ◽  
Vol 421 ◽  
pp. 522-525
Author(s):  
Yun Jian Jiang ◽  
Hong Yang Jing ◽  
Lian Yong Xu ◽  
Lei Zhao
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
High Temperature ◽  
Residual Stresses ◽  
Creep Crack Growth ◽  
Crack Tip ◽  
Stress Generation ◽  
Compact Specimen ◽  
Notch Radius ◽  
P92 Steel

In the present study, the residual stress generated in the crack tip of compact specimens was investigated in order to analyze the effect of residual stress on the creep crack growth. Residual stresses were generated using loading in compression beyond yield and then unloading. The maximum region of residual stress in the crack tip was obtained by numerical simulations which calculated the effect of notch radius and penetrated stress. It was found that a 2.5 mm notch radius with the applied stress at 36 KN could generate the largest extent of residual stress ahead of crack tip in the compact specimen. Further, when the specimen was heated to a high temperature, the value of residual stress reduced while the distribution changed little.

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