Microstructure of Friction Stir Welded Dissimilar Wrought 2017A and Cast AlSi9Mg Aluminum Alloys

Kopyściański, Mateusz; Dymek, S.; Hamilton, C.; Węglowska, A.; Pietras, A.; Szczepanek, Marcin; Wojnarowska, M.

doi:10.12693/aphyspola.131.1390

Cited by 7 publications

(15 citation statements)

References 10 publications

(8 reference statements)

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“…Kopyscianski et al [277] obtained high weld quality for the process parameters including WS equal to 112 mm/min, TRS equal to 355 rpm and vertical force equal to 32.8 kN (Table 4).…”

Section: Tool Rotation and Welding Speedsmentioning

confidence: 97%

“…During studies on FSWed joints of components made of dissimilar wrought 2017A/ cast AlSi9Mg alloys (Table 3), Kopyscianski et al [277] reported that the AlSi9Mg alloy on the AS dominated the weld center. The local maximum on the AS was on the nugget side with a high density of the bands of the 2017A alloy.…”

Section: Positioning Of Alloymentioning

confidence: 99%

“…The proper FSWed joints of dissimilar wrought 2017A/ cast AlSi9Mg alloys (Table 5), studied by Kopyscianski et al [277] were obtained using a modified Whorl-type tool made of HS6-5-2 high speed steel with a 24 mm diameter and scrolled shoulder. The threaded pin diameter tapered linearly from 6 mm at the shoulder to 4.5 mm at the tip with an overall height of 5.7 mm.…”

Section: Tool Rotation and Welding Speedsmentioning

confidence: 99%

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Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Derbiszewski,

Obraniak,

Rylski

et al. 2024

Preprint

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To fulfil a need of limitation automotive emissions the reduction of vehicle weight is widely recommended and achieved in many ways, both by the construction of individual elements of the vehicle, and by the selection of light materials including Al alloys. Connecting these elements with each other and with elements made of iron alloys can be realized, inter alia, by welding or stir welding. However, the quality of the welds obtained varies widely and depends on many design, operational and environmental factors. The present study focused on a review of various welding technics used to joint both similar and dissimilar Al alloys utilized in automotive industry, the effect of various process parameters on welds quality, and phenomena appeared in such welds..

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“…Kopyscianski et al [277] obtained high weld quality for the process parameters including WS equal to 112 mm/min, TRS equal to 355 rpm and vertical force equal to 32.8 kN (Table 4).…”

Section: Tool Rotation and Welding Speedsmentioning

confidence: 97%

Section: Positioning Of Alloymentioning

confidence: 99%

Section: Tool Rotation and Welding Speedsmentioning

confidence: 99%

See 1 more Smart Citation

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Derbiszewski,

Obraniak,

Rylski

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The weld (also called welding joint) is a point or edge where two or more pieces of metal are joined together. The weld structure depends on welding parameters as well as types and configurations at the joint where actual welding can occur [ 6 ]. A zone within the weld where the tool performs the process is called the thermomechanical affected zone.…”

Section: Introductionmentioning

confidence: 99%

The Object Segmentation from the Microstructure of a FSW Dissimilar Weld

et al. 2022

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Friction stir welding (FSW) is an environmentally friendly, solid-state welding technique. In this research work, we analyze the microstructure of a new type of FSW weld applying a two- stage framework based on image processing algorithms containing a segmentation step and microstructure analysis of objects occurring in different layers. A dual-speed tool as used to prepare the tested weld. In this paper, we present the segmentation method for recognizing areas containing particles forming bands in the microstructure of a dissimilar weld of aluminum alloys made by FSW technology. A digital analysis was performed on the images obtained using an Olympus GX51 light microscope. The image analysis process consisted of basic segmentation methods in conjunction with domain knowledge and object detection located in different layers of a weld using morphological operations and point transformations. These methods proved to be effective in the analysis of the microstructure images corrupted by noise. The segmentation parts as well as single objects were separated enough to analyze the distribution on different layers of the specimen and the variability of shape and size of the underlying microstructures, which was not possible without computer vision support.

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“…It is influenced by the welding parameters, type of tool, position of the materials in the joint (in the case of dissimilar weld seams), etc. [1,2]. One of the difficulties with the FSW process is that each of these factors has a major impact on the quality of a joint.…”

Section: Introductionmentioning

confidence: 99%

NON-INVASIVE ANALYSIS AND VISUALIZATION OF OBJECTS FROM FSW AlSi9Mg/2017A ALUMINUM ALLOY JOINTS

Wójcicka¹,

Mroczka²,

Kowalski³

2018

mafe

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Friction stir welding (FSW) technology allows for the welding of materials that differ in their chemical compositions, microstructures, and properties. When selecting the parameters, it is necessary to analyze the structure of a weld and eliminate the defects. The use of X-ray microtomography creates the possibility of precise imaging of a joint structure-especially when it contains defects (voids). The tests were carried out on an FSW joint made with both 2017A and AlSi9Mg aluminum alloys. The macrostructure was cross-sectional, and a defect was found in the middle part of the joint and on the advancing side. We used a conventional method of observation light microscopy. Then, an analysis was performed using X-ray microtomography, which revealed the shape of the defect in 3D. Individual cross-sections were extracted, which enabled us to measure the geometric quantities. A dependence was found for the shape of the defect on the welding parameters and the variability of its construction. The usefulness of this advanced material imaging technology for the analysis of FSW welds has been confirmed.

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Microstructure of Friction Stir Welded Dissimilar Wrought 2017A and Cast AlSi9Mg Aluminum Alloys

Cited by 7 publications

References 10 publications

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

The Object Segmentation from the Microstructure of a FSW Dissimilar Weld

NON-INVASIVE ANALYSIS AND VISUALIZATION OF OBJECTS FROM FSW AlSi9Mg/2017A ALUMINUM ALLOY JOINTS

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