scholarly journals Numerical Simulation of Tensile Behavior of Corroded Aluminum Alloy 2024 T3 Considering the Hydrogen Embrittlement

Metals ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 56 ◽  
Author(s):  
Marina Vasco ◽  
Konstantinos Tserpes ◽  
Spiros Pantelakis
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Hydrogen Embrittlement ◽  
Tensile Behavior ◽  
Aluminum Alloy 2024

Numerical simulation of tensile behavior of corroded aluminum alloy 2024 T3

2015 ◽  
Vol 6 (4) ◽  
pp. 451-467 ◽  
Author(s):  
Dorothea Setsika ◽  
Konstantinos Tserpes ◽  
Spiros Pantelakis
Keyword(s):  
Aluminum Alloy ◽  
Mechanical Behavior ◽  
Corrosion Damage ◽  
Exposure Period ◽  
Tensile Specimen ◽  
Tensile Behavior ◽  
Content Type ◽  
Structural Part ◽  
Representative Unit Cell ◽  
Aluminum Alloy 2024

Purpose – The purpose of this paper is to develop a multi-scale modeling approach for simulating the tensile behavior of corroded aluminum alloy 2024 T3. Design/methodology/approach – The approach combines two FE models: a model of a three-dimensional representative unit cell representing a pit and a model of the tensile specimen. The models lie at the micro- and macro-scales, respectively. The local homogenized mechanical behavior of the corroded material is simulated for different pit configurations. Then, the behavior of the pits is introduced into different areas (elements) of the tensile specimen and final analyses are performed to simulate the mechanical behavior of the corroded material. The approach has been applied to six different exposure periods of the exfoliation corrosion test. Findings – The numerical results show that the presence of pits and exfoliated areas reduces the yield strength of the material. The comparison of predicted elongation to fracture with the experimental of each exposure period value allows for the indirect assessment of the effect of hydrogen embrittlement. Originality/value – Since the characteristics of corrosion damage evolution with exposure time are constant for the specific material, the model could be applied for the simulation of the mechanical behavior of any corroded structural part (e.g. a mechanically fastened panel) made from the aluminum 2024 T3 alloy.

scholarly journals Corrosion-induced hydrogen embrittlement in aluminum alloy 2024

2006 ◽  
Vol 48 (5) ◽  
pp. 1209-1224 ◽  
Author(s):  
H. Kamoutsi ◽  
G.N. Haidemenopoulos ◽  
V. Bontozoglou ◽  
S. Pantelakis
Keyword(s):  
Aluminum Alloy ◽  
Hydrogen Embrittlement ◽  
Aluminum Alloy 2024

An Experimental Investigation of the Yield Loci of 1100-0 Aluminum, 70:30 Brass, and an Overaged 2024 Aluminum Alloy After Various Prestrains

1986 ◽  
Vol 108 (4) ◽  
pp. 313-320 ◽  
Author(s):  
D. E. Helling ◽  
A. K. Miller ◽  
M. G. Stout
Keyword(s):  
Aluminum Alloy ◽  
Small Strain ◽  
Yield Locus ◽  
Material Behavior ◽  
Shear Stresses ◽  
2024 Aluminum Alloy ◽  
Yield Loci ◽  
Aluminum Alloy 2024 ◽  
Von Mises ◽  
Normal And Shear Stresses

The multiaxial yield behaviors of 1100-0 aluminum, 70:30 brass, and an overaged 2024 aluminum alloy (2024-T7) have been investigated for a variety of prestress histories involving combinations of normal and shear stresses. Von Mises effective prestrains were in the range of 1.2–32%. Prestress paths were chosen in order to investigate the roles of prestress and prestrain direction on the nature of small-strain offset (ε = 5 × 10−6) yield loci. Particular attention was paid to the directionality, i.e., translation and distortion, of the yield locus. A key result, which was observed in all three materials, was that the final direction of the prestrain path strongly influences the distortions of the yield loci. Differences in the yield locus behavior of the three materials were also observed: brass and the 2024-T7 alloy showed more severe distortions of the yield locus and a longer memory of their entire prestrain history than the 1100-0 aluminum. In addition, more “kinematic” translation of the subsequent yield loci was observed in brass and 2024-T7 than in 1100-0 aluminum. The 2024-T7 differed from the other materials, showing a yield locus which decreased in size subsequent to plastic straining. Finally, the implications of these observations for the constitutive modeling of multiaxial material behavior are discussed.

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