2012
DOI: 10.1179/1362171812y.0000000003
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Friction stir welding of multilayered steel

Abstract: This study investigates the mechanical properties and microstructure of friction stir butt welded high strength/ductility multilayered steel consisting of 15 alternating layers of SUS 301 austenitic stainless steel (eight layers) and SUS 420J2 martensitic stainless steel (seven layers) with a total thickness of 1?2 mm. With optimised welding parameters, defect free welds with an ultimate tensile strength (UTS) of 1240 MPa and a fracture elongation of 13% were accomplished. This corresponds to a joint efficienc… Show more

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Cited by 15 publications
(5 citation statements)
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References 22 publications
(55 reference statements)
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“…This process works by joining metals layer-by-layer until the desired shape and thickness of the part is achieved [31,32]. The advantage of this method is that each previously added layer acts as a support for the next pass so that the structure is self-supported during the manufacturing process [32,33]. Investigations show that mechanical properties of multilayer FSW formed materials are comparable to those of the corresponding base metal.…”
Section: Friction Stir Additive Manufacturingmentioning
confidence: 99%
“…This process works by joining metals layer-by-layer until the desired shape and thickness of the part is achieved [31,32]. The advantage of this method is that each previously added layer acts as a support for the next pass so that the structure is self-supported during the manufacturing process [32,33]. Investigations show that mechanical properties of multilayer FSW formed materials are comparable to those of the corresponding base metal.…”
Section: Friction Stir Additive Manufacturingmentioning
confidence: 99%
“…Progress is being made to apply the process for friction stir welding of steels. 176,177 In the area of PWHT, progress needs to be made to understand and to mitigate reheat cracking and embrittlement. Advanced austenitic stainless steels have demonstrated acceptable performance in many tubing applications where increased resistance to creep, steamside oxidation and/or fireside corrosion is needed.…”
Section: Prognosis For Futurementioning
confidence: 99%
“…Progress is being made to apply the process for friction stir welding of steels. 176, 177 In the area of PWHT, progress needs to be made to understand and to mitigate reheat cracking and embrittlement.…”
Section: Prognosis For Futurementioning
confidence: 99%
“…Even though multilayer or multipass FSW approaches are mentioned a few times in the literatures, the previous investigations did not apply a layerby-layer build-up approach to produce a thick structure with a convectional tool pin length. [16][17][18] A preliminary effort to fabricate a thick-sectioned steel structure by a multipass multilayered FSW (MM-FSW) approach was recently demonstrated. [19][20][21] Lim et al 21 used premachined step-like plates and metal insert plates to build up thick section (∼15 mm thick) structures.…”
Section: Introductionmentioning
confidence: 99%