A computational study of the microstructural effect on the deformation and fracture of friction stir welded aluminum

Ruslan Revovich Balokhonov, V. A. Romanova, S. A. Martynov, A. V. Zinoviev, O. S. Zinovieva, E. E. Batukhtina

Research output: Contribution to journal › Article

Abstract

A computational analysis of the microstructural effect on the deformation and fracture of friction stir welded aluminum is performed. A dynamic boundary-value problem using a plane strain approximation is solved numerically by the finite difference method. The calculations take an explicit account of experimental polycrystalline microstructures typical for different weld zones, like the base material, weld nugget, and thermo-mechanically affected zones. The mechanical response of individual grains is simulated within an elastic-plastic formulation of the problem with isotropic strain hardening. A fracture model allowing for crack generation and propagation in maximum equivalent plastic strain regions is used. It is shown that the localization of plastic strain and the strength of aluminum in different weld zones are determined by the microstructure of the material on the advancing side of the weld.

Original language	English
Pages (from-to)	2-10
Number of pages	9
Journal	Computational Materials Science
Volume	116
DOIs	https://doi.org/10.1016/j.commatsci.2015.10.005
Publication status	Published - 15 Apr 2016

Fingerprint

Keywords

Fracture
Friction stir welding
Microstructure-based models
Numerical simulation
Plastic strain localization
Polycrystals

ASJC Scopus subject areas

Computer Science(all)
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Physics and Astronomy(all)
Computational Mathematics

Cite this

Balokhonov, RR., Romanova, V. A., Martynov, S. A., Zinoviev, A. V., Zinovieva, O. S., & Batukhtina, E. E. (2016). A computational study of the microstructural effect on the deformation and fracture of friction stir welded aluminum. Computational Materials Science, 116, 2-10. https://doi.org/10.1016/j.commatsci.2015.10.005

@article{43fc03572fc84c7eb23640ce55f22dd7,

title = "A computational study of the microstructural effect on the deformation and fracture of friction stir welded aluminum",

abstract = "A computational analysis of the microstructural effect on the deformation and fracture of friction stir welded aluminum is performed. A dynamic boundary-value problem using a plane strain approximation is solved numerically by the finite difference method. The calculations take an explicit account of experimental polycrystalline microstructures typical for different weld zones, like the base material, weld nugget, and thermo-mechanically affected zones. The mechanical response of individual grains is simulated within an elastic-plastic formulation of the problem with isotropic strain hardening. A fracture model allowing for crack generation and propagation in maximum equivalent plastic strain regions is used. It is shown that the localization of plastic strain and the strength of aluminum in different weld zones are determined by the microstructure of the material on the advancing side of the weld.",

keywords = "Fracture, Friction stir welding, Microstructure-based models, Numerical simulation, Plastic strain localization, Polycrystals",

author = "Ruslan Revovich Balokhonov and Romanova, {V. A.} and Martynov, {S. A.} and Zinoviev, {A. V.} and Zinovieva, {O. S.} and Batukhtina, {E. E.}",

year = "2016",

month = "4",

day = "15",

doi = "10.1016/j.commatsci.2015.10.005",

language = "English",

volume = "116",

pages = "2--10",

journal = "Computational Materials Science",

issn = "0927-0256",

publisher = "Elsevier",

}

TY - JOUR

T1 - A computational study of the microstructural effect on the deformation and fracture of friction stir welded aluminum

AU - Balokhonov, Ruslan Revovich

AU - Romanova, V. A.

AU - Martynov, S. A.

AU - Zinoviev, A. V.

AU - Zinovieva, O. S.

AU - Batukhtina, E. E.

PY - 2016/4/15

Y1 - 2016/4/15

N2 - A computational analysis of the microstructural effect on the deformation and fracture of friction stir welded aluminum is performed. A dynamic boundary-value problem using a plane strain approximation is solved numerically by the finite difference method. The calculations take an explicit account of experimental polycrystalline microstructures typical for different weld zones, like the base material, weld nugget, and thermo-mechanically affected zones. The mechanical response of individual grains is simulated within an elastic-plastic formulation of the problem with isotropic strain hardening. A fracture model allowing for crack generation and propagation in maximum equivalent plastic strain regions is used. It is shown that the localization of plastic strain and the strength of aluminum in different weld zones are determined by the microstructure of the material on the advancing side of the weld.

AB - A computational analysis of the microstructural effect on the deformation and fracture of friction stir welded aluminum is performed. A dynamic boundary-value problem using a plane strain approximation is solved numerically by the finite difference method. The calculations take an explicit account of experimental polycrystalline microstructures typical for different weld zones, like the base material, weld nugget, and thermo-mechanically affected zones. The mechanical response of individual grains is simulated within an elastic-plastic formulation of the problem with isotropic strain hardening. A fracture model allowing for crack generation and propagation in maximum equivalent plastic strain regions is used. It is shown that the localization of plastic strain and the strength of aluminum in different weld zones are determined by the microstructure of the material on the advancing side of the weld.

KW - Fracture

KW - Friction stir welding

KW - Microstructure-based models

KW - Numerical simulation

KW - Plastic strain localization

KW - Polycrystals

UR - http://www.scopus.com/inward/record.url?scp=84959455627&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959455627&partnerID=8YFLogxK

U2 - 10.1016/j.commatsci.2015.10.005

DO - 10.1016/j.commatsci.2015.10.005

M3 - Article

AN - SCOPUS:84959455627

VL - 116

SP - 2

EP - 10

JO - Computational Materials Science

JF - Computational Materials Science

SN - 0927-0256

ER -

Access to Document

10.1016/j.commatsci.2015.10.005