Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Ahmed, Mohamed M. Z.; Ataya, Sabbah; Seleman, Mohamed M. El-Sayed; Mahdy, Abdalla M. A.; Alsaleh, Naser A.; Ahmed, Essam

doi:10.3390/met11010068

Cited by 51 publications

(39 citation statements)

References 41 publications

(56 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As different welding parameters affect the mechanical properties of welded specimens, the feed rate, tool rotation speed, and tilting angle parameters must be evaluated together [18,20,24].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical and microstructural properties of friction stir welded AA5083 and AA5754 aluminium alloys TOLUN, F.

Tolun¹

2021

View full text Add to dashboard Cite

Friction stir welding is a solid-state welding method for joining materials having the same or different properties at temperatures below their melting points. Generally, the welding parameters affect the microstructural and mechanical properties of welded specimens. In this study, AA5083 and AA5754 aluminium alloys were joined by friction stir welding at different tool rotation speeds of 450, 700, and 900 rpm, feed rates of 40, 50, and 80 mm min −1 , and tilting angles of 0 • , 1 • , and 3 • using a tapered stir pin. The effects of these welding parameters on the mechanical properties of the welded parts were examined by tensile and micro-hardness tests. Moreover, the welded joints were analysed using an optical microscope, scanning electron microscope, and energy dispersive X-ray spectroscopy. The results indicated that the specimen welded at 50 mm min −1 feed rate, 450 rpm tool rotation speed, and a 1 • tilting angle exhibited the highest welding strength and elongation values.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Ahmed et al [24] investigated the effect of welding parameters on the joined dissimilar aluminium alloys (AA5083/AA5754 and A5083/AA7020) with FSW. The results showed that sound joints were obtained at the low heat input FSW parameters while increasing the heat input resulted in tunnel defects.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural properties of friction stir welded AA5083 and AA5754 aluminium alloys TOLUN, F.

Tolun¹

2021

View full text Add to dashboard Cite

show abstract

“…Firstly, visual tests (VT) were performed in accordance with the EN ISO 17637:2017 standard [53]. The VT for the FSW joints revealed cracks, lack of penetration and overheating of the plates as well as a certain amount of material outflow [35][36][37]. This information was of particular importance as it made it possible to select appropriate welding parameters for producing joints.…”

Section: Examination Proceduresmentioning

confidence: 99%

“…As FSW is a solid-state welding process, defects such as porosity or cold cracking do not occur. The most common defects in aluminium alloys are voids, kissing bonds, flash defects (material flow), lack of penetration or cracks [34][35][36][37]. These defects are mainly caused by incorrect parameter selection.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Tool Shape and Process Parameters on the Mechanical Properties of AW-3004 Aluminium Alloy Friction Stir Welded Joints

2021

View full text Add to dashboard Cite

The purpose of the following study was to compare the effect of the shape of a tool on the joint and to obtain the values of Friction Stir Welding (FSW) parameters that provide the best possible joint quality. The material used was an aluminium alloy, EN AW-3004 (AlMn1Mg1). To the authors’ best knowledge, no investigations of this alloy during FSW have been presented earlier. Five butt joints were made with a self-developed, cylindrical, and tapered threaded tool with a rotational speed of 475 rpm. In order to compare the welding parameters, two more joints with a rotational speed of 475 rpm and seven joints with a welding speed of 300 mm/min with the use of a cylindrical threaded pin were performed. This involved a visual inspection as well as a tensile strength test of the welded joints. It was observed that the value of the material outflow for the joints made with the cylindrical threaded pin was higher than it was for the joints made with the tapered threaded pin. However, welding defects in the form of voids appeared in the joints made with the tapered threaded tool. The use of the cylindrical tool resulted in higher values for about 37% of mechanical properties compared with the highest result for the tapered threaded joint. As far as the parameters were concerned, it was concluded that most of the specimens were properly joined for a rotational speed of 475 rpm. In the joints made with a welding speed of 300 mm/min, the material was not stirred properly. The best joint quality was given for a rotational speed of 475 rpm as well as a variety of welding speed values between 150 and 475 mm/min.

show abstract

“…Friction stir welding (FSW) is a solid-state welding process [43][44][45][46] that has been used at the laboratory scale for welding both low-softening-temperature materials (Al, Cu, Mg) [45][46][47][48] and high-softening-temperature materials (Ti, Ni, steel alloys) [49][50][51]. However, in terms of industrial applications, only low-softening-temperature materials find their way into a large number of applications, such as shipbuilding, railway, aerospace and automotive [44].…”

Section: Fsw Tool For High-softening-temperature Materialsmentioning

confidence: 99%

The Development of WC-Based Composite Tools for Friction Stir Welding of High-Softening-Temperature Materials

Ahmed

Barakat

Mohamed

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

This work presents a detailed investigation for the effect of Y2O3 and Ni additions on the densification behavior, microstructural evolution and mechanical properties of a WC-Co-TaC-NbC composite. With the aim of obtaining WC-based composites with improved fracture toughness, to be used in severe conditions of high-temperature deformation, different concentrations of Y2O3 were incorporated with and without 5 wt% Ni addition. The consolidated composites were characterized using density measurement, XRD, SEM, hardness, fracture toughness, transverse rupture strength and compression testing. Fully dense composites were obtained through the applied consolidation regime of cold compaction and sintering at 1450 °C for 1.5 h under vacuum with a relative density up to 97%. The addition of 2.5 wt% Y2O3 to the base WC composite increased the relative density and then slightly decreased with the increase of the Y2O3 content. The addition of 5 wt% Ni to the base composites significantly increased the relative density to 97%. The XRD results indicated the existence of the Co3W3C η-phase after sintering, and the intensity of its peaks was reduced with the addition of 5 wt% Ni. The microstructure of the consolidated composites consisted of three phases: WC, Co3W3C and Y2O3. The area fraction of the Y2O3 phase increased as its weight fraction increased. In terms of the fracture toughness, the transverse-rupture strength (TRS) and the compressive strength were significantly improved by the addition of 5 wt% Ni with the 2.5 wt% Y2O3. Accordingly, this composition was used to manufacture the tools for the friction stir welding of the high-softening-temperature materials, which was successfully used for 25 plunges and about 500 cm of butt joints in nickel-based and carbon–steel alloys.

show abstract

Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Cited by 51 publications

References 41 publications

Mechanical and microstructural properties of friction stir welded AA5083 and AA5754 aluminium alloys TOLUN, F.

Mechanical and microstructural properties of friction stir welded AA5083 and AA5754 aluminium alloys TOLUN, F.

The Influence of Tool Shape and Process Parameters on the Mechanical Properties of AW-3004 Aluminium Alloy Friction Stir Welded Joints

The Development of WC-Based Composite Tools for Friction Stir Welding of High-Softening-Temperature Materials

Contact Info

Product

Resources

About