A review on effect of friction stir processing on the welded joints

Jadav, Harshadkumar H.; Badheka, Vishvesh J.; Sharma, Daulat Kumar; Upadhyay, Gautam

doi:10.1016/j.matpr.2020.11.215

Cited by 10 publications

(8 citation statements)

References 30 publications

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“…During FSP, the rotating pin generates stirring and mixing in welding and HAZ regions; therefore, materials experience severe plastic deformation in the processed zone. As a result, fine equiaxed recrystallised grains are formed [6,21,28,33]. Thus, as shown in Figure 7c, the dendrite structure resulting from fusion welding is totally destroyed.…”

Section: Microstructuresmentioning

confidence: 97%

“…Among various joining processes, welding is commonly used in the manufacturing industry due to its evident advantages. Welding plays a significant role when it comes to the fabrication of large and complex components and structures [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…It is expected that applying FSP can modify weldment in addition to microstructural refinement. The approach can potentially eliminate defects and mechanical properties in the weld joint [6,[20][21][22][23]. Silva et al and Costa et al achieved superior mechanical properties in 6082-T651 alloy GMAW butt and T-fillet welds with FSP [24,25].…”

Section: Introductionmentioning

confidence: 99%

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Remanufacturing the AA5052 GTAW Welds Using Friction Stir Processing

Roeen

Yousef

Emadi

et al. 2021

Metals

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Progress in sustainable manufacturing is a crucial element to minimise negative environmental impacts. The conventional fusion weld process used to join aluminium alloys resulted in coarse grain structure, inevitable defects, and severe joint softening. Friction stir processing (FSP) has the potential to modify the microstructure of materials in joint structure and improve the mechanical properties. In this investigation, the effect of friction stir post–processing was evaluated to study the microstructural characteristics and mechanical properties of GTAW (gas tungsten arc welding) welds in the aluminium 5052 alloy. During FSP, the grains’ dendritic microstructure was destroyed, and the dynamic recrystallisation resulted in a very fine and equiaxed grains structure in the fusion zone. The hardness of the friction-stir-processed welds significantly improved because of microstructure grain refinement. The processed joint demonstrated higher ultimate tensile and yield strength (~275 MPa and 221 MPa, respectively) and superior elongation (31.1%) compared to the unprocessed weld; at the same time, the mechanical strength (yield and ultimate tensile) is similar to that of the base metal.

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Section: Microstructuresmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Remanufacturing the AA5052 GTAW Welds Using Friction Stir Processing

Roeen

Yousef

Emadi

et al. 2021

Metals

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“…Данный метод позволяет получать высокопрочные сварные соединения алюминиевых, магниевых и титановых сплавов благодаря тому, что процесс протекает в твердой фазе и лишен недостатков присущих традиционным методам сварки плавлением [1][2][3]. Тем не менее, несмотря на широкое использование данного метода, существует ряд мало исследованных проблем, связанных со сваркой трением с перемешиванием, а также фрикционной перемешивающей обработкой, которая основана на методе СТП и используется для поверхностного упрочнения материалов [4,5]. Одной из таких проблем является формирование структуры и свойств сварных соединений больших толщин, так как они представляют наибольший интерес для изготовления крупногабаритных конструкций, таких как корпуса летательных аппаратов.…”

Section: Doi: 1017223/978-5-907442-03-0-2021-232 влияние параметров процесса сварки трением с перемешиванием на формирование структуры алunclassified

Влияние Параметров Процесса Сварки Трением С Перемешиванием На Формирование Структуры Алюминиево-Магниевого Сплава Амг5 Толщиной 35 Мм

2021

Международная Конференция "Физическая Мезомеханика. Материалы С Многоуровневой Иерархически Организованной Структурой И Интелле

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“…As a form of arc welding, TIG welding, involves the application of heat produced by an arc struck among a non-sacrificial tungsten electrode and a material with the aid of a shielding gas [8]. Also, TIG welding processes are likely to result in the formation of coarse-grain structures and defects such as porosity, entrapment of impurities, microstructural cracks etc., [9,10]. The high weld temperature cycle that metal goes through during welding is the primary cause of mechanical properties and microstructural variation [11,12].…”

Section: Introductionmentioning

confidence: 99%

Post-weld friction stir processing of AA5083-F TIG welds with scandium added fillers

Aarthi¹,

Sekar²

2022

Mater. Res. Express

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The friction stir processing method was engaged on fusion welded AA5083-F/ER5356 and AA5083-F/ER5356+Sc joints to explore the impact of the process parameters on the mechanical and metallurgical characteristics of the processed weldments. The FSP approach was applied to the TIG-welded joints with pin-less FSP tool. Optical and SEM evaluation was conducted to examine the microstructure of the welds and mechanical analysis such as impact toughness, tensile, microhardness and fractography was performed to evaluate the strength of the weld. The microstructural study of the FSP joints revealed an average grain size of 4 µm for TIG welds and an average of 2 µm for the Sc added TIG weld, when compared to TIG-welded joints, which had an average grain size range of 12 µm and 8 µm for Sc added. All FSPed joints revealed a significant increase in grain refinement. There was a slight improvement in the impact resistance in FSPed samples than TIG welded samples. The FSPed joints' ultimate tensile strength (UTS), which is higher than the tensile strength of the base metal, was 288 MPa for the FSPed joints and 331 MPa with Sc added. The FSP joint's elongation range was decreased to 7.1% but improved for Sc added FSP joints up to 20.5%. The maximum hardness of FSPed TIG-welded joints was 90 HV1, while the maximum hardness of Sc added FSP joints was 95 HV1, which is significantly higher than the maximum hardness of TIG weldments. According to the fractography results, the majority of failure modes are ductile. Therefore, adopting FSP over TIG welding had enhanced the properties of the weld both mechanically and metallurgically.

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A review on effect of friction stir processing on the welded joints

Cited by 10 publications

References 30 publications

Remanufacturing the AA5052 GTAW Welds Using Friction Stir Processing

Remanufacturing the AA5052 GTAW Welds Using Friction Stir Processing

Влияние Параметров Процесса Сварки Трением С Перемешиванием На Формирование Структуры Алюминиево-Магниевого Сплава Амг5 Толщиной 35 Мм

Post-weld friction stir processing of AA5083-F TIG welds with scandium added fillers

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