Influence of friction stir welding parameters on the microstructural and mechanical properties of AA 6016-T4 thin welds

Rodrigues, D.M.; Loureiro, A.; Leitão, C.; Leal, Rui M.; Chaparro, Bruno M.; Vilaça, Pedro

doi:10.1016/j.matdes.2008.09.016

Cited by 198 publications

(101 citation statements)

References 70 publications

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“…It is also important to enhance that, in a previous study, the formability of the 5182-H111 and 6016-T4 tailored blanks was assessed by deep-drawing axisymmetric cups. For a punch displacement of 60 mm, no necking was observed in the weld zone, as is demonstrated by Rodrigues et al [15] and Leal et al [29] where results and experimental details are described. …”

Section: Effect Of Traverse Speed On Weld Strengthsupporting

confidence: 62%

“…For both alloys, the hardness profiles can be explained assuming high heat-input during the process, which can be associated with the high tool rotation and low tool traverse speeds used when performing the welds [30]. In fact, according to Rodrigues et al [15], the weld properties, for both the 5182-H111 and 6016-T4 alloys, can be drastically altered by changing the process parameters and tool geometry.…”

Section: Hardnessmentioning

confidence: 99%

“…In particular, over the last 20 years, FSW of aluminium and its alloys has captured important attention from manufacturing industries, such as shipbuilding, automotive, railway and aircraft production [2,5,[12][13][14]. Supporting its industrial application, several studies have been conducted in friction stir welding of aluminium, being already concluded that the mechanical properties of the friction stir welds in heattreatable aluminium alloys depend mainly on the size, volume fraction and distribution of precipitates in the stirred region and adjacent heat affected zone [15][16][17][18][19]. Research developed in friction stir welding of non-heat-treatable aluminium alloys enabled to determine that the mechanical properties of the welds produced depend mainly on the grain size and on the density of dislocations after the plastic deformation and recrystallization processes taking place during welding [10,18,20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Friction Stir Welding of very thin plates

et al. 2012

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Section: Effect Of Traverse Speed On Weld Strengthsupporting

confidence: 62%

Section: Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Friction Stir Welding of very thin plates

et al. 2012

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“…FSSW has been succesfully applied to aluminium [9,10], magnesium [11] and steel [12] sheets, but there are very few publications on polymer FSSW applications [13][14][15][16]. The welding parameters and the tool geometry affect friction stir welding and friction stir spot welding stir zonestir zone formation and weld strength [17]. The tool consists of two parts [18]: the shoulder and the pin.…”

Section: K Bilicimentioning

confidence: 99%

Effect of tool geometry on friction stir spot welding of polypropylene sheets

Bilici

2012

Express Polym. Lett.

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Abstract. The effects of tool geometry and properties on friction stir spot welding properties of polypropylene sheets were studied. Four different tool pin geometries, with varying pin angles, pin lengths, shoulder diameters and shoulder angles were used for friction stir spot welding. All the welding operations were done at the room temperature. Lap-shear tensile tests were carried out to find the weld static strength. Weld cross section appearance observations were also done. From the experiments the effect of tool geometry on friction stir spot weld formation and weld strength were determined. The optimum tool geometry for 4 mm thick polypropylene sheets were determined. The tapered cylindrical pin gave the biggest and the straight cylindrical pin gave the lowest lap-shear fracture load.

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“…Besides the process parameters, it is also critical to specify additional parameters like tool geometry, mounting system, welding direction etc. [5,21,27] Due to the high strength of FSW joints, this method can easily compete with traditional joining methods. The applications of this method instead of traditional welding or riveting is appealing because it lowers the manufacturing costs and the mass of the product.…”

Section: Introductionmentioning

confidence: 99%

The effect of tool wear on the quality of lap joints between 7075 t6 aluminum alloy sheet metal created with the FSW method

Burek¹,

Wydrzyński²,

Sęp³

et al. 2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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The article concerns the issues of tool wear effect on the quality of a friction stir welding joint quality. The experiment used aluminum alloy 7075 T6 sheet metal, which is used primarily in the aerospace industry. 1.0mm and 0.8mm thick lap joints were tested. Tool wear was determined based on multiple readings on a multisensory machine. The tool wear evaluation was done on the basis of a static tensile strength test and metallographic sections of the joints. The pin of the tool works in more demanding conditions and is more exposed to friction. This results from tooling operations performed at full depth dive in the jointed material. When also considering the small dimensions of the pin such as the diameter and the great forces occurring in this process, it is easy to see why this element is most susceptible to tool wear. The welding process causes the tool to undergo friction wear, which is the cause of reduced tool dive depth in the jointed material. As a result, it is paramount to constantly control the tool extension to achieve the desired quality parameters of the joint. After creating 200m of joints, a decrease in the strength of joints was observed as well as the repeatability of the results connected to a change in the stirring conditions in the material. The change in joint strength and tool wear is also confirmed in the metallographic analysis, which states that the continued degradation of the tool makes it subject to a decrease in size of the characteristic sizes of the thermoplastic zone that is the main determining factor of the joint strength.

show abstract

Influence of friction stir welding parameters on the microstructural and mechanical properties of AA 6016-T4 thin welds

Cited by 198 publications

References 70 publications

Friction Stir Welding of very thin plates

Friction Stir Welding of very thin plates

Effect of tool geometry on friction stir spot welding of polypropylene sheets

The effect of tool wear on the quality of lap joints between 7075 t6 aluminum alloy sheet metal created with the FSW method

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