Growth modes of grain boundary precipitate in aluminum alloys under different lattice misfits

2022 ◽  
Author(s):  
X. Shuai ◽  
H. Mao ◽  
S. Tang ◽  
Y. Kong ◽  
Y. Du
Keyword(s):  
Aluminum Alloys ◽  
Grain Boundary ◽  
Boundary Precipitate ◽  
Growth Modes

Grain boundary ductile fracture in precipitation hardened aluminum alloys

1987 ◽  
Vol 35 (6) ◽  
pp. 1193-1219 ◽  
Author(s):  
A.K. Vasudévan ◽  
R.D. Doherty
Keyword(s):  
Aluminum Alloys ◽  
Grain Boundary ◽  
Ductile Fracture

scholarly journals Grain boundary segregation and intermetallic precipitation in coarsening resistant nanocrystalline aluminum alloys

2019 ◽  
Vol 165 ◽  
pp. 698-708 ◽  
Author(s):  
A. Devaraj ◽  
W. Wang ◽  
R. Vemuri ◽  
L. Kovarik ◽  
X. Jiang ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Nanocrystalline Aluminum

New quaternary grain boundary precipitate in Al–Mg–Si alloy containing silver

2006 ◽  
Vol 55 (2) ◽  
pp. 127-129 ◽  
Author(s):  
K MATSUDA ◽  
S IKENO ◽  
T SATO ◽  
Y UETANI
Keyword(s):  
Grain Boundary ◽  
Boundary Precipitate

Modeling Recrystallization in Aluminum Using Input from Experimental Observations

2007 ◽  
Vol 558-559 ◽  
pp. 1057-1061 ◽  
Author(s):  
Abhijit P. Brahme ◽  
Joseph M. Fridy ◽  
Anthony D. Rollett
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Aluminum Alloys ◽  
Grain Boundary ◽  
Microstructural Evolution ◽  
Nearest Neighbor ◽  
Electron Back Scatter Diffraction ◽  
Effect Of Temperature ◽  
Model Predictions ◽  
Boundary Properties

A model has been constructed for the microstructural evolution that occurs during the annealing of aluminum alloys. Geometric and crystallographic observations from two orthogonal sections through a polycrystal using automated Electron Back-Scatter Diffraction (EBSD) were used as an input to the computer simulations to create a statistically representative threedimensional model. The microstructure is generated using a voxel-based tessellation technique. Assignment of orientations to the grains is controlled to ensure that both texture and nearest neighbor relationships match the observed distributions. The microstructures thus obtained are allowed to evolve using a Monte-Carlo simulation. Anisotropic grain boundary properties are used in the simulations. Nucleation is done in accordance with experimental observations on the likelihood of occurrences in particular neighborhoods. We will present the effect of temperature on the model predictions.

Effect of grain boundary segregation on the deformation mechanisms and mechanical properties of nanocrystalline binary aluminum alloys

2016 ◽  
Vol 117 ◽  
pp. 445-454 ◽  
Author(s):  
Rita I. Babicheva ◽  
Sergey V. Dmitriev ◽  
Lichun Bai ◽  
Ying Zhang ◽  
Shaw Wei Kok ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloys ◽  
Grain Boundary ◽  
Boundary Segregation ◽  
Deformation Mechanisms ◽  
Grain Boundary Segregation

The origin of the grain boundary precipitate free zone

1969 ◽  
Vol 17 (11) ◽  
pp. 1363-1377 ◽  
Author(s):  
P.N.T Unwin ◽  
G.W Lorimer ◽  
R.B Nicholson
Keyword(s):  
Grain Boundary ◽  
Precipitate Free Zone ◽  
Boundary Precipitate ◽  
Free Zone

scholarly journals Recent Development of Superplasticity in Aluminum Alloys: A Review

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 77 ◽  
Author(s):  
Laxman Bhatta ◽  
Alexander Pesin ◽  
Alexander P. Zhilyaev ◽  
Puneet Tandon ◽  
Charlie Kong ◽  
...  
Keyword(s):  
Grain Size ◽  
Aluminum Alloys ◽  
Grain Boundary ◽  
Solute Drag ◽  
Grain Boundary Sliding ◽  
Dislocation Motion ◽  
Vital Role ◽  
Superplastic Behavior ◽  
Wide Range ◽  
Commercial Applications

Aluminum alloys can be used in the fabrication of intricate geometry and curved parts for a wide range of uses in aerospace and automotive sectors, where high stiffness and low weight are necessitated. This paper outlines a review of various research investigations on the superplastic behavior of aluminum alloys that have taken place mainly over the past two decades. The influencing factors on aluminum alloys superplasticity, such as initial grain size, deformation temperature, strain rate, microstructure refinement techniques, and addition of trace elements in aluminum alloys, are analyzed here. Since grain boundary sliding is one of the dominant features of aluminum alloys superplasticity, its deformation mechanism and the corresponding value of activation energy are included as a part of discussion. Dislocation motion, diffusion in grains, and near-grain boundary regions being major features of superplasticity, are discussed as important issues. Moreover, the paper also discusses the corresponding values of grain size exponent, stress exponent, solute drag creep and power law creep. Constitutive equations, which are essential for commercial applications and play a vital role in predicting and analyzing the superplastic behavior, are also reviewed here.

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