Effect of fusion and friction stir welding techniques on the microstructure, crystallographic texture and mechanical properties of mild steel

Kumar, Lailesh; Yazar, K.U.; Pramanik, Sudipta

doi:10.1016/j.msea.2019.03.100

Cited by 26 publications

(11 citation statements)

References 34 publications

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“…Static mechanical properties of friction stir welded (FSW) joint have been found to be affected by a local microstructure of the joint [1,2,3,4,5,6,7]. Research on the relation between microstructure evolution and mechanical properties in the FSW joint, grain size, grain orientation, and texture variation are taken into account.…”

Section: Introductionmentioning

confidence: 99%

“…Research on the relation between microstructure evolution and mechanical properties in the FSW joint, grain size, grain orientation, and texture variation are taken into account. The finer grain size, the higher angle grain boundaries and more random textures in the stir zone lead to the higher strength and larger elongation of the joint [3,4,5]. The changes of grain orientation and texture have an effect on the mechanical properties [6].…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Modeling Containing Hardening Particles and Grain Orientation for Aluminum Alloy FSW Joints

Sun

Guo

Xiao³

et al. 2019

Materials

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The macro-mesoscopic joint fatigue model containing hardening particles and crystal characteristics is established to study the effect of the hardening particles and the grain orientation on fatigue properties of an aluminum alloy friction stir welding (FSW) joint. The macroscopic model is composed of the weld nugget zone, thermo-mechanically affected zone, heat-affected zone, and base material, according to the metallurgical morphology and hardness distribution of the joint. Cyclic stress and strain data are used to determine the material properties. The fatigue parameters used in the calculation of cyclic stresses and strains are obtained with the four-point correlation method. The mesoscopic models of different zones are inserted into the joint macroscopic model as submodules. The models containing the information of hardening particles and grain orientation are established with crystal plasticity theory for the grains and isotropic hardening rule for the hardening particles. The effects of hardening particles and grain orientation on the stress and strain responses are discussed. The simulation results show that high-angle misorientation of adjacent grains hinders the stress transfer. The particle cluster or cracked particles intensify the stress and strain concentrations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fatigue Modeling Containing Hardening Particles and Grain Orientation for Aluminum Alloy FSW Joints

Sun

Guo

Xiao³

et al. 2019

Materials

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“…Note that the curves have been reproduced based on the data available in the studies by Aval and Serajzadeh 26 and Kumar et al. 27 …”

Section: Methodsmentioning

confidence: 99%

“…The stress-strain curves of 6061-T6 Aluminum alloy and Mild steel. Note that the curves have been reproduced based on the data available in the studies by Aval and Serajzadeh26 and Kumar et al27 …”

mentioning

confidence: 99%

Evaluation of different strain-based damage criteria for predicting the fatigue life of friction stir spot-welded joints under multi-axial loading conditions

Aghabeigi

Hassanifard

Hashemi

2019

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this article, fatigue life of dissimilar friction stir spot welds in Cross-Tension and Lap-Shear specimens is predicted using a number of fatigue damage criteria. The results revealed a relatively good correlation between predicted fatigue crack initiation lives and experimental data. Also, it has been shown that in the whole range of applied load levels, the least discrepancy between predicted fatigue lives and experimental data is related to the Smith–Watson–Topper criterion. Finally, an excellent agreement was found in predicting the location of the crack tips using the Fatemi–Socie criterion in both types of specimens.

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“…They provide the advantages of high strength coefficients, low deformation, and the absence of defects such as slag and hot cracking in the joints. Although the residual stress in the FSW joint of materials of the same specifications is less than that in the traditional fusion welded joints, [11][12][13][14][15] the residual stress still affects the fatigue life, stress corrosion resistance, and structural accuracy of the welded equipment. Therefore, over the past 20 years, considerable research [16][17][18][19] has been conducted on the residual stress distribution law of aluminum alloy FSW joints.…”

Section: Introductionmentioning

confidence: 99%

Residual stress effects on fatigue crack growth in different regions of aluminum alloy 7050 friction stir weld

Jin

Chen

et al. 2022

Fatigue Fract Eng Mat Struct

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Different distribution of residual stress in each microregion of the joint had an intensely significant influence on the fatigue crack growth. The friction stir welding (FSW) finite element model was developed. The residual stress was imported to the fracture mechanical model by the submodel technique. The residual K rs (stress intensity factor from residual stress) approaches were used to predict the fatigue crack growth rate (FCGR) in different regions of aluminum alloy 7050 friction stir welded joints. The FRANC3D in conjunction with ABAQUS, the M-integral method was used to calculate K rs , considering the effect of K rs on the effective stress ratio, the Paris-Walker formula was used to predict the FCGR in different regions of the FSW joints. The predicting results and experimental values aligned with the better, demonstrating that the established model could accurately predict the FCGR in different regions of the FSW joints.

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Effect of fusion and friction stir welding techniques on the microstructure, crystallographic texture and mechanical properties of mild steel

Cited by 26 publications

References 34 publications

Fatigue Modeling Containing Hardening Particles and Grain Orientation for Aluminum Alloy FSW Joints

Fatigue Modeling Containing Hardening Particles and Grain Orientation for Aluminum Alloy FSW Joints

Evaluation of different strain-based damage criteria for predicting the fatigue life of friction stir spot-welded joints under multi-axial loading conditions

Residual stress effects on fatigue crack growth in different regions of aluminum alloy 7050 friction stir weld

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