Dislocation evolution and induced precipitation on corrosion resistance of a novel Al-Mg-Zn-Er-Zr alloy during hot compression

Xue, Da; Wei, Wu; Shi, Wei; Zhou, Xiaorong; Wen, Shuguang; Wu, Xiaolan; Gao, Kunyuan; Chen, Huafu; Qi, Peng; Huang, Hui; Nie, Zuoren

doi:10.1007/s12598-022-02258-w

Cited by 10 publications

(1 citation statement)

References 43 publications

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“…In order to simulate the interaction between an atomistic defect within a grain and a GB with a determined misorientation angle, some computational methods have successfully been utilized [16,17]. Molecular dynamics (MD) simulations are widely used to study the tensile response, deformation mechanisms and crack propagation of nanocrystalline materials [16,[18][19][20][21][22]. Using MD, it has been found that the accumulation of dislocations at the crack tip reduces the crack propagation [19].…”

Section: Introductionmentioning

confidence: 99%

Effects of Grain Boundary Misorientation Angle on the Mechanical Behavior of Al Bicrystals

Velilla-Díaz,

Zambrano

2023

Nanomaterials

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This research article explores the effect of grain boundary (GB) misorientation on the mechanical behavior of aluminum (Al) bicrystals by means of molecular dynamics (MD) simulations. The effect of GB misorientation on the mechanical properties, fracture resistance, and crack propagation are evaluated under monotonic and cyclic load conditions. The J-integral and the crack tip opening displacement (CTOD) are assessed to establish the effect of the GB misorientation angle on the fracture resistance. The simulations reveal that the misorientation angle plays a significant role in the mechanical response of Al bicrystals. The results also evidence a gradual change in the mechanical behavior from brittle to ductile as the misorientation angle is increased.

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Section: Introductionmentioning

confidence: 99%

Effects of Grain Boundary Misorientation Angle on the Mechanical Behavior of Al Bicrystals

Velilla-Díaz,

Zambrano

2023

Nanomaterials

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Effect of Annealing on the Microstructure, Mechanical Properties, and Intergranular Corrosion of a Novel Al–Mg–Zn Alloy

Gao,

Wei,

Huang

et al. 2024

Adv Eng Mater

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The effect of annealing on the mechanical properties, intergranular corrosion (IGC) properties, and microstructure of Al–Mg–Zn alloys is studied. The results show that with the increase of annealing temperature, the strength of the alloy decreases, the elongation increases, and the corrosion resistance firstly increases and then decreases. The alloy exhibits a high corrosion resistance and good mechanical properties when the annealing treatment is 270 °C for 2 h. Meanwhile, the IGC mass loss value is less than 15 mg cm−2. In addition, the ultimate tensile strength, yield strength, and elongation are 416, 250 MPa, and 16.0%, respectively. The T‐Mg32(Al, Zn)49 phases are directly precipitated when annealing at 270 °C for 2 h. After sensitization, T phase gradually grows and coarsens. When the alloy is annealing at 400 °C for 2 h, a part of T phase gradually dissolves in the Al matrix. After sensitization, the Mg atoms with higher supersaturation gradually diffuse to grain boundary by bulk diffusion due to the low dislocation density and form a thin precipitate film, which deteriorates the corrosion resistance of the alloy. The details of corrosion mechanism analysis are as follows.

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Dynamic recrystallization behavior and strengthening mechanism of a novel Mo–Ti3AlC2 alloy at ultrahigh temperature

Yang,

Zheng,

Zhao

et al. 2024

Rare Met.

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Dislocation evolution and induced precipitation on corrosion resistance of a novel Al-Mg-Zn-Er-Zr alloy during hot compression

Cited by 10 publications

References 43 publications

Effects of Grain Boundary Misorientation Angle on the Mechanical Behavior of Al Bicrystals

Effects of Grain Boundary Misorientation Angle on the Mechanical Behavior of Al Bicrystals

Effect of Annealing on the Microstructure, Mechanical Properties, and Intergranular Corrosion of a Novel Al–Mg–Zn Alloy

Dynamic recrystallization behavior and strengthening mechanism of a novel Mo–Ti3AlC2 alloy at ultrahigh temperature

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