Residual stress measurements in a thick, dissimilar aluminum alloy friction stir weld

Prime, Michael B.; Gnäupel‐Herold, Thomas; Baumann, John A.; Lederich, R. J.; Bowden, D. M.; Sebring, R. J.

doi:10.1016/j.actamat.2006.04.034

Cited by 263 publications

(145 citation statements)

References 28 publications

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“…Applications of the contour method include welded joints [14], quenched materials [15], railroad rails [16], impacted plates [17], etc. Being a relatively new technique, the experimental validations of the contour method have been attempted with the help of different non-destructive and destructive techniques such as neutron diffraction [18,19], synchrotron diffraction [20], X-ray diffraction [21] and slitting [22]. Overall, the contour method results agree well with the majority of the independent validations.…”

Section: Introductionsupporting

confidence: 75%

Analytical solutions for determining residual stresses in two-dimensional domains using the contour method

Kartal

2013

Proc. R. Soc. A.

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The contour method is one of the most prevalent destructive techniques for residual stress measurement. Up to now, the method has involved the use of the finite-element (FE) method to determine the residual stresses from the experimental measurements. This paper presents analytical solutions, obtained for a semi-infinite strip and a finite rectangle, which can be used to calculate the residual stresses directly from the measured data; thereby, eliminating the need for an FE approach. The technique is then used to determine the residual stresses in a variable-polarity plasma-arc welded plate and the results show good agreement with independent neutron diffraction measurements.

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Section: Introductionsupporting

confidence: 75%

Analytical solutions for determining residual stresses in two-dimensional domains using the contour method

Kartal

2013

Proc. R. Soc. A.

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“…The part of the plate investigated here is well outside the "secure" limit of 8-12 times the diameter of the FSW-tool [3] - [5] but well within the recommendation of [6] saying that the plate length should be at least 8 times the plate thickness to avoid a significant change of residual stresses. In the case of the segment cut from the ring no significant change of residual stresses should occur at all (assuming that rings behave similar as plates).…”

Section: Discussionmentioning

confidence: 95%

“…Investigations of the redistribution of the residual stresses have been performed on butt welds in thin [3] - [5] and thicker aluminum plates [6]. Experimental investigations on thin (3 mm) plates indicated that the weld length must be approximately 8 to 12 times the diameter of the FSW-tool for the residual stress state not to be influenced significantly by removal of the specimen.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Specimen Size on Residual Stresses in Friction Stir Welded Aluminum Components

Pfeiffer

Reisacher

Windisch³

et al. 2014

AMR

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Abstract. Friction stir welding (FSW) is a well-known technique which allows joining of metal parts without severe distortion. Because FSW involves less heat input relative to conventional welding, it may be assumed that cutting specimens from larger friction stir welded components results in a negligible redistribution of residual stresses. The aim of the investigations was to verify these assumptions for a welded aluminum plate and a circumferentially-welded aluminum cylinder. Strain gage measurements, X-ray diffraction and the incremental hole drilling method were used.

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“…Such a machining method results in minimal heat input, [38] thus not introducing unforeseen heat treatments onto the samples. The four geometries are shown in Figure 10.…”

Section: Obtaining Tensile Destructive Geometries From Gleeble Samplesmentioning

confidence: 99%

Characterization of Loading Responses and Failure Loci of a Boron Steel Spot Weld

Raath

Norman

McGregor

et al. 2018

Metall Mater Trans A

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Boron steel, classed as an ultra high-strength steel (UHSS), has been utilized in anti-intrusion systems in automobiles, providing high strength and weight-saving potential through gage reduction. UHSS spot welds exhibit unique hardness distributions, with a hard nugget and outlying base material, but with a soft heat-affected zone in-between these regions. This soft zone reduces the strength of the weld and makes it susceptible to failure. Due to the interaction of various weld zones that occurs during loading, there is a need to characterize the loading response of the weld for accurate failure predictions. The loading response of certain weld zones, as well as failure loci, was obtained through physical simulation of the welding process. The results showed a significant difference in mechanical behavior through the weld length. An important result is that instrumented indentation was shown to be a valid, quantitative method for verifying the accuracy with which weld microstructure has been recreated with regard to the target weld microstructure.

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Residual stress measurements in a thick, dissimilar aluminum alloy friction stir weld

Cited by 263 publications

References 28 publications

Analytical solutions for determining residual stresses in two-dimensional domains using the contour method

Analytical solutions for determining residual stresses in two-dimensional domains using the contour method

The Effect of Specimen Size on Residual Stresses in Friction Stir Welded Aluminum Components

Characterization of Loading Responses and Failure Loci of a Boron Steel Spot Weld

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