Mechanical, Metallurgical Characteristics and Corrosion Properties of Friction Stir Welded AA6061-T6 Using Commercial Pure Aluminium as a Filler Plate

Babu, K. Tejonadha; Kumar, Pankaj; Muthukumaran, S.

doi:10.1016/j.mspro.2014.07.080

Cited by 16 publications

(9 citation statements)

References 6 publications

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“…The corrosion behavior of friction stir (FS) welded aluminum alloys has been investigated in recent years. [1][2][3][4][5][6] Generally, it has been found that the weld zones are more susceptible to corrosion than the parent metal. FS welds of aluminum alloys such as 2219, 2195, 2024, 7075, and 6013 did not exhibit enhanced corrosion of the weld zones.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and static immersion corrosion behavior of AA7020-O Al plates joined by friction stir welding

Mosleh

Mahmoud

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the present investigation, the influence of tool pin profile and postweld heat treatment on microstructure, hardness, and static immersion corrosion behavior of AA7020-O Al plates joined by friction stir welding was investigated. Friction stir welding was conducted using two tools having different pin profiles, typically, a tool with tapered cylindrical pin and a tool with two flat-sided cylindrical pin. Postweld heat treatment was carried out using a solution heat treatment temperature of 540 AE 1 C for 12 h followed by aging at 155 AE 1 C for 6 h. Corrosion tests were carried out by immersing the welds in an aqueous solution containing NaCl and H 2 O 2 for 6 h according to ASTM-G110. The results revealed that the two flat-sided cylindrical pin tool produces finer a-Al grains, at the center of dynamically recrystallized zones, than the tapered cylindrical pin tool. The postweld heat treatment slightly increases the size of the a-Al grains at the center of dynamically recrystallized zones. In the as-welded conditions, the friction stir welded regions exhibited lower hardness values than the base alloy. However, the regions friction stir welded using two flat-sided cylindrical pin tool showed relatively higher hardness values than those regions friction stir welded using the tapered cylindrical pin tool. The postweld heat treatment slightly increases the hardness of the welded regions to values that are still lower than the base alloy. Generally, the dynamically recrystallized zones are more susceptible to corrosion than the base alloy. In both AW and postweld heat treatment conditions, the thermomechanically affected zones showed the lowest corrosion resistance when compared with dynamically recrystallized zones and heat affected zone regions. In the as-welded conditions, regions friction stir welded using tapered cylindrical pin tool exhibited better corrosion resistance than those friction stir welded using two flat-sided cylindrical pin. The postweld heat treatment improves the corrosion resistance of the dynamically recrystallized zones friction stir welded using two flat-sided cylindrical pin tool.

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Section: Introductionmentioning

confidence: 99%

Microstructure and static immersion corrosion behavior of AA7020-O Al plates joined by friction stir welding

Mosleh

Mahmoud

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…K. Tejonadha Babu et al performed friction stir butt welding on AA6061 using pure aluminum as a filler plate [8]. Macro and microphotography studies indicated that filler plate deposition had occurred on the welded joint surface.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Analysis of Friction Stir Welding Using CuZn and Zn Fillers on Aluminum 6061-T6: A Comparative Study

Hantoko,

Anggono,

Lubis

et al. 2024

The 7th Mechanical Engineering, Science and Technology International Conference

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“…For instance, heat-treatable and precipitation hardened AA6061-T651 containing magnesium and silicon as its major alloying constituents is utilized in producing structural components of aircrafts wings and fuselages, car wheel spacers and rims and body frames due to its relatively high strength and high toughness properties [6][7][8]. The poor quality of weld obtained from this alloy has become a bothering issue resulting from the excessive softening of the strengthening precipitates at temperatures above the solidus temperature 2 [9]. In order to address this challenge, several experimental approaches and strategies have been adopted and engaged such as parametric optimization of welding parameters, design and re-design of welding tool pin and shoulder geometries, adoption of post and pre-heat treatment studies, as well as particulate reinforcement strategies [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…The poor quality of weld obtained from this alloy has become a bothering issue resulting from the excessive softening of the strengthening precipitates at temperatures above the solidus temperature 2 [9]. In order to address this challenge, several experimental approaches and strategies have been adopted and engaged such as parametric optimization of welding parameters, design and re-design of welding tool pin and shoulder geometries, adoption of post and pre-heat treatment studies, as well as particulate reinforcement strategies [9][10][11][12]. However, among the several research efforts previously carried out towards enhancing the deteriorated mechanical properties of friction stir welded joints of AA6061-T651, addition of reinforcement powders, most especially nano and micro-sized ceramic or conventional particles which includes Al2O3, B4C, SiO2 and SiC have proven to significantly improve the frail friction stir welded joint quality [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of AA6061-T651 friction stir butt-weldment using particulate addition strategy

Bamidele,

Peter,

Olatunji

et al. 2023

Res. Eng. Struct. Mat.

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The joint quality performance of AA6061-T651 friction stir weldments had been investigated in this study through addition of pulverized waste glass (PWG), palm kernel shell ash (PKSA) and synthetic silicon carbide (SSC) with a bid to enhancing some selected mechanical properties. Optimized processing parameters which include 1120 rpm rotational speed, 40 mm/min traverse speed, 1.5o tilt angle) and optimum reinforcement strategy (parallel hole) established from a preliminary investigation were utilized for the friction stir welding. The mechanical properties such as the tensile strength, hardness and impact energy were then further investigated. The results showed that the mechanical properties of all the reinforced welded joints improved significantly than the unreinforced joint having a relatively reduced joint performance of 132 MPa tensile strength, hardness of 45.3 HRB and impact energy of 39.4 J. The PWG-reinforced friction stir welded joint performed optimally at a tensile strength of 212.7 MPa, 72 HRB hardness and 54.5 J impact energy followed by the SSC-reinforced joint which exhibited 173.7 MPa tensile strength, 54.8 HRB hardness and impact energy of 41.7 J. Hence, 80%, 59% and 38% joint performance was exhibited through tensile strength, hardness and impact energy of PWG-reinforced friction stir weldments of AA6061-T651 against the unreinforced weldments.

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Mechanical, Metallurgical Characteristics and Corrosion Properties of Friction Stir Welded AA6061-T6 Using Commercial Pure Aluminium as a Filler Plate

Cited by 16 publications

References 6 publications

Microstructure and static immersion corrosion behavior of AA7020-O Al plates joined by friction stir welding

Microstructure and static immersion corrosion behavior of AA7020-O Al plates joined by friction stir welding

Microstructural Analysis of Friction Stir Welding Using CuZn and Zn Fillers on Aluminum 6061-T6: A Comparative Study

Performance improvement of AA6061-T651 friction stir butt-weldment using particulate addition strategy

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