Fatigue Strength of Spot Welds in Titanium-Bearing HSLA Steels

Pollard, B.

doi:10.4271/820284

Cited by 31 publications

(18 citation statements)

References 3 publications

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“…The endurance limit is 0.34 kN, 0.44 kN, 0.48 kN, 0.72 kN, and 0.16 kN for specimen sets A, C, E, F, and G, respectively. Similar effects have been reported for steel [26] and aluminum [27]. However, a recent study reported that increasing the nugget size resulted in decreasing the fatigue strength of spot-welds in AISI304 stainless steel [28].…”

Section: A Load-life Curvesupporting

confidence: 81%

Fatigue characterization and modeling of AZ31B magnesium alloy spot-welds

Behravesh

Jahed

Lambert

2014

International Journal of Fatigue

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Cyclic behavior of AZ31B spot-welds was studied using different specimen configurations, and compared with steel and aluminum spot-welds. Fatigue strength of magnesium spot-welds was similar to aluminum and less than steel. Three failure modes were observed in tensile-shear specimens and one mode of failure in cross-tension specimens. Fatigue crack initiation life was 50% and 30% of the total life for tensile-shear and cross-tension specimens, respectively. A number of available fatigue models were assessed by predicting fatigue life of magnesium spot-welds. Although these models do not account for the asymmetric cyclic hardening behavior, some of them performed successfully for magnesium spotwelds.

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Section: A Load-life Curvesupporting

confidence: 81%

Fatigue characterization and modeling of AZ31B magnesium alloy spot-welds

Behravesh

Jahed

Lambert

2014

International Journal of Fatigue

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“…The same correlation has already been reported in the literature for aluminum [48,[59][60] and steel [47]. An interesting point is that the trend line slope is 1 kN/mm for both magnesium and aluminum spot welds, and is 3 kN/mm for steel spot welds, confirming that the UTSL in spot welds of steel is more sensitive to nugget size than for magnesium and aluminum.…”

Section: Quasi-static Behaviorsupporting

confidence: 75%

“…The endurance limit was 0.42 kN, 0.55 kN, and 0.6 kN for sets A, C, and E, respectively. Similar effects have been reported for steel [47,61] and aluminum [48], however, recent research reported that increasing the nugget size resulted in decreasing the fatigue strength of spot welds in AISI304 stainless steel [62].…”

Section: Cyclic Behaviormentioning

confidence: 67%

“…Davidson and Imhof [30] have reviewed the effects of these parameters on fatigue strength in low and high cycle regimes. Nugget size effect on fatigue resistance of steel and aluminum spot welds as reported by Pollard [47] and Gean, et al [48] is noticeable for low cycle but not in the high cycle regime. The effects of cyclic loading on hardness in the base metal and spot weld area have been investigated as part of the fatigue characterization of spot welds.…”

Section: Introductionmentioning

confidence: 77%

“…Mean stress [44] and base metal strength [14,45] have been reported to have negligible effect on the fatigue life. On the other hand, geometric parameters such as sheet thickness [45][46], coupon width [45], and spot weld diameter [44][45][47][48] have been identified as the most significant factors on fatigue strength of spot welds. Davidson and Imhof [30] have reviewed the effects of these parameters on fatigue strength in low and high cycle regimes.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of magnesium spot welds under tensile and cyclic loadings

2011

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Resistance spot welds of a magnesium alloy were characterized in terms of microstructure, hardness and monotonic and cyclic properties. Microstructural features in base metal and different zones in the weld region were discussed and the mechanical behavior of spot welds in tensile-shear configuration was studied. Effects of welding parameters were investigated on the micro-and macroscale characteristics of magnesium spot welds. To this end, five sets of spot weld specimens were prepared, utilizing different welding parameters. The effect of cyclic loading was studied on microstructure and hardness of the base metal and the weld region, and it was shown that microstructural features do not change remarkably under cyclic loading. Fatigue crack initiation and propagation behavior was discussed for different specimen sets under both low and high cyclic loads. Fatigue cracks under high cyclic loading initiated close to the nugget edge, and decreasing the cyclic load nucleated the cracks farther from the nugget.The final publication is available at Elsevier via http://dx.doi.org/10.1016/j.matdes.2011.06.001 © 2011 ABSTRACTResistance spot welds of a magnesium alloy were characterized in terms of microstructure, hardness and monotonic and cyclic properties. Microstructural features in base metal and different zones in the weld region were discussed and the mechanical behavior of spot welds in tensile-shear configuration was studied. Effects of welding parameters were investigated on the micro-and macro-scale characteristics of magnesium spot welds. To this end, five sets of spot weld specimens were prepared, utilizing different welding parameters. The effect of cyclic loading was studied on microstructure and hardness of the base metal and the weld region, and it was shown that microstructural features do not change remarkably under cyclic loading. Fatigue crack initiation and propagation behavior was discussed for different specimen sets under both low and high cyclic loads. Fatigue cracks under high cyclic loading initiated close to the nugget edge, and decreasing the cyclic load nucleated the cracks farther from the nugget.

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Fatigue analysis of spot welded joints in suspension mounting part

Yum

Chu

et al. 2003

KSME International Journal

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Fatigue Strength of Spot Welds in Titanium-Bearing HSLA Steels

Cited by 31 publications

References 3 publications

Fatigue characterization and modeling of AZ31B magnesium alloy spot-welds

Fatigue characterization and modeling of AZ31B magnesium alloy spot-welds

Characterization of magnesium spot welds under tensile and cyclic loadings

Fatigue analysis of spot welded joints in suspension mounting part

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