Processing, Microstructure, and Residual Stress Effects on Strength and Fatigue Crack Growth Properties in Friction Stir Welding: A Review

Biro, Andrew L.; Chenelle, Brendan F.; Lados, Diana A.

doi:10.1007/s11663-012-9716-5

Cited by 49 publications

(23 citation statements)

References 43 publications

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“…Fatigue crack growth in FSW joints also was extensively reviewed by Biro et al [23]. Using many sources, they show a direct relationship between residual stress and crack growth rate.…”

Section: Input Data For Probabilistic Analysismentioning

confidence: 98%

“…This behavior can be explained by crack closure. Biro et al [23] have moreover demonstrated crack path deviation in FSW joints. This deviation can be explained by different values of residual stress in the longitudinal and transverse directions, which affects the principal stresses around the crack tip [94,95].…”

Section: Input Data For Probabilistic Analysismentioning

confidence: 99%

“…Murr [22] focused in dissimilar metal and alloy systems in order to gain a better understanding of the material flow during FSW, and noted that exceptionally high strain rates and a high degree of material mixing occurs during FSW. Biro et al [23] also reviewed some aspects in microstructure, strength, and crack propagation properties in FSW joints. Numerical modeling and analysis have also been reviewed [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Miranda

Gerlich

Walbridge

2015

Engineering Fracture Mechanics

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“…Fatigue crack growth in FSW joints also was extensively reviewed by Biro et al [23]. Using many sources, they show a direct relationship between residual stress and crack growth rate.…”

Section: Input Data For Probabilistic Analysismentioning

confidence: 98%

Section: Input Data For Probabilistic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Miranda

Gerlich

Walbridge

2015

Engineering Fracture Mechanics

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“…The grains in the TMAZ are highly elongated due to high strain forces and the presence of an upward-flowing pattern around the stir zone. 14,29 Furthermore, the thermo-mechanically affected zone is the heat-affected zone (HAZ) that is not plastically deformed but undergoes a thermal cycle during the friction-stir welding process. 29 A SEM micrograph of the DP780 steel as the base metal is shown in Figure 10a.…”

Section: Microstructure Characterization Of the Weldsmentioning

confidence: 99%

“…14,29 Furthermore, the thermo-mechanically affected zone is the heat-affected zone (HAZ) that is not plastically deformed but undergoes a thermal cycle during the friction-stir welding process. 29 A SEM micrograph of the DP780 steel as the base metal is shown in Figure 10a. It shows that the microstructure of the base metal is composed of martensite islands surrounded by a ferrite matrix.…”

Section: Microstructure Characterization Of the Weldsmentioning

confidence: 99%

Effect of tool geometry and welding parameters on the microstructure and static strength of the friction-stir spot-welded DP780 dual-phase steel sheets

Abedini¹,

Ranjbarnodeh²,

Marashi³

2017

Mater. Tehnol.

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In this study, friction-stir spot welding is performed on DP780 dual-phase steel sheets to investigate the effect of the tool geometry and welding parameters on the static strength, the failure mode and the microstructure of the welds. First, the effects of two different parameters, the tool plunge depth and the tool holding time, were evaluated, where the tool penetration varied between 1.9-2.8 mm and the dwell time between 8-16 s. The tensile shear strength was first increased with the tool penetration and then decreased, while a longer tool holding time increased the tensile shear strength of the joints. Next, welds were made to compare the effects of two tool geometries, i.e., the conventional tapered pin and the triangular pin, on the hook shape, microstructure and static strength. The difference in the hook geometry led to differences in the tensile shear strength of the welds. The static strength of the welds made with the triangular pin was higher than that obtained using the tapered pin. Keywords: friction-stir spot welding, tool geometry, static strength, dual-phase steel, microstructure V {tudiji je izvedeno torno vrtilno to~kovno varjenje na DP780 dvofazni jekleni plo~evini, z namenom raziskave vpliva geometrije orodja in varilnih parametrov na stati~no trdnost, tip po{kodbe in mikrostrukturo zvarov. Najprej so bili ocenjeni u~inki dveh razli~nih parametrov, globine penetriranja in~asa zadr`anja orodja. Globina je variirala med 1,9 mm in 2,8 mm in zadr`evalni~as med 8 s in 16 s. Natezna stri`na trdnost se je s pove~anjem globine penetracije najprej zvi{ala, nato pa zni`ala, medtem ko je~as zadr`evanja orodja pove~al natezno stri`no trdnost zvarov. Izdelani so bili tudi zvari, na katerih se je dolo~il vpliv geometrije orodja, klasi~nega polkro`nega in trikotnega profila, na obliko, mikrostrukturo in trdnost zvarov. Stati~na trdnost zvarov, narejenih z orodjem trikotnega profila, je bila vi{ja kot tista, pridobljena s polkro`no obliko.

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Fatigue‐Crack‐Growth Behavior of Two Pipeline Steels

et al. 2016

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The fatigue-crack-growth behavior of two types of pipeline steels, Alloy B [Fe-0.05C-1.52Mn-0.12Si-0.092Nb, weight percent (wt%)] and Alloy C (Fe-0.04C-1.61Mn-0.14Si-0.096Nb, wt%), have been investigated. Compact-tension (CT) specimens have been tested at various frequencies (10, 1, and 0.1 Hz) and different R ratios (0.1 and 0.5, R ¼ P min /P max where P min is the minimum applied load, and P max is the maximum applied load) in air. It is concluded that higher R ratios lead to faster crack-growth rates (FCGRs), while frequency does not have much influence on FCGRs. Moreover, Alloy B tends to have better fatigue resistance than Alloy C under various test conditions in air.

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Processing, Microstructure, and Residual Stress Effects on Strength and Fatigue Crack Growth Properties in Friction Stir Welding: A Review

Cited by 49 publications

References 43 publications

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Effect of tool geometry and welding parameters on the microstructure and static strength of the friction-stir spot-welded DP780 dual-phase steel sheets

Fatigue‐Crack‐Growth Behavior of Two Pipeline Steels

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