Effect of Preheating in Hybrid Friction Stir Welding of Aluminum Alloy

Yaduwanshi, Deepak Kumar; Bag, Swarup; Pal, Sukhomay

doi:10.1007/s11665-014-1170-x

Cited by 50 publications

(16 citation statements)

References 15 publications

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“…Based on the arc source used for preheating, AAFSW processes can be further classified into two categories. The arcs may be allied to the FSW process by integrating a plasma arc source 69,70 or a tungsten inert gas (TIG) welding arc [71][72][73][74] with the FSW machine. Plasma arc is used as the preheating source in FSW considering the unique combination of high arc stability, concentrated energy density and low equipment cost.…”

Section: Arc Assisted Fsw (Aafsw) Process and Experimental Set-upmentioning

confidence: 99%

“…In the former category, preheating of the workpieces is carried out to soften the material. Thermal methods used for this purpose are electricity, [41][42][43][44][45][46][47][48][49][50][51] induction, [52][53][54][55][56] laser, 29,[57][58][59][60][61][62][63][64][65][66][67][68] plasma, 69,70 arc, [71][72][73][74] hot gas stream, 75 gas torch, 76 etc. Electricity and induction are used for resistance heating of the workpieces.…”

Section: Introductionmentioning

confidence: 99%

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Auxiliary energy assisted friction stir welding – status review

Padhy

Gao

2015

Science and Technology of Welding and Joining

105

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The present article introduces the auxiliary energy assisted friction stir welding (FSW) processes purported to overcome the shortcomings of the conventional FSW process. The auxiliary energies used for this purpose are thermal energy from electric resistance heat, induction heat, laser, plasma, arc, etc. and mechanical energy in the form of ultrasonic vibration. The state-of-the-art, experimentation and progresses in these FSW variants are surveyed and compiled. The auxiliary energy assisted FSW processes exhibit great promise by having numerous advantages over the conventional FSW in terms improved process window, heat generation, material flow, reduced load on the tools and mechanical properties of joints. Such remarkable advantages would lead these processes to redefine many global technologies and markets in the twenty-first century. However, these variants are still in their preliminary stages of investigation, and more systematic investigations are necessary for their critical assessment. In this aspect, some unsolved issues and challenges are overlooked.

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Section: Arc Assisted Fsw (Aafsw) Process and Experimental Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Auxiliary energy assisted friction stir welding – status review

Padhy

Gao

2015

Science and Technology of Welding and Joining

105

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“…The heating process on the outside of the welding surface also increases welding strength [12]. Different heating processes use plasma for preheating in aluminium alloy welding [13], while other studies conduct the design heating using gas heaters for preheating in carbon steel welding [14] [15]. The excessive heating temperature or less heating temperature affects the welding results, and this proof will be evaluated through the heating process during the welding process on SS 316 L metal.…”

Section: Introductionmentioning

confidence: 99%

Hardness Evaluation on SS 316L Joined with Gas Tungsten Arc Welding Under Constant Heat Treatment

Edy

Sujono

2020

JMEST

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The purpose of this study is to show the hardness of the GTAW welding results on SS 316L metal with surface heating during the welding process. Observations in this study used SS 316L material with heat temperature regulation on the metal surface of the welding process using heating variations of 100 ℃, 120 ℃ and 140 ℃. The welding process of SS 316L material used a welding joint model uses single V-type welding joint with an angle of 60°, a spacing of 2 mm, a root surface of 1 mm and a thickness of 5 mm. Vickers hardness test was conducted to evaluate the hardness of samples. The results indicate that all specimens show a difference in the level of violence comparing with the values of the average level of hardness in each weld specimen. Specimens with the welding process heating temperature 100 ℃ have an average hardness value of 115.6 HVN. In contrast, samples with heating 120 ℃ have increased by having an average hardness value of 131.0 HVN. In comparison, heating specimens with heating surfaces of welding 140 ℃ have an increase in hardness values with an average of 171.5 HVN.

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“…External heating provide at the bottom of the weld plate also improved the strength of the weld [8]. Different methods of preheating are employed, Yaduwanshi, et al used plasma for preheating in friction stir welding to weld aluminum alloy [12], Lotfi et al designed a preheating setup and optimized its process parameters [13], and Sun et al applied gas welding torch for preheating in friction stir spot welding of carbon steel weld [9]. Form these literatures it can be suggested that preheating with gas weld torch is the simple and effective approach among these preheating techniques.…”

Section: Introductionmentioning

confidence: 99%