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      Effect of Tool Pin Geometry and Process Parameters During FSW of Dissimilar Alloys of Mg

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          Abstract

          Abstract Effect of two distinctive tool designs along with other tool related parameters including speed of traverse of tool and offset distance of tool pin during friction stir welding of dissimilar AZ91C and AZ31B alloys of Mg were investigated. Experimental recordings revealed that all the joints fabricated during 1st set of investigations employing cylindrically tapered pin geometry and their offset distances being 0.5 mm or 1mm towards any one of the parent metals possessed flaws. Joint No: II-3 fabricated in 2nd set of investigations by employing 15mm diameter inner shoulder tool with threaded cylindrical tapered pin geometry at a tool offset distance of 0 mm was found be free from flaws. This joint exhibited a tensile strength of 186 MPa which was 78.81% of AZ91C and 70.72% of another parent metal AZ31B. Existence of intermetallic phased constituents, namely, Mg17Al12 in several regions of fractured surfaces have contributed to the supplementary brittleness in the zone of nugget, and have reduced the tensile strength of the joint.

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          Most cited references48

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          Review on friction stir welding of magnesium alloys

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            Effect of tool tilt angle on strength and microstructural characteristics of friction stir welded lap joints of AA2014-T6 aluminum alloy

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              Dissimilar friction stir welding of 7075 aluminum alloy to AZ31 magnesium alloy using SiC nanoparticles

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                Author and article information

                Journal
                mr
                Materials Research
                Mat. Res.
                ABM, ABC, ABPol (São Carlos, SP, Brazil )
                1516-1439
                1980-5373
                2022
                : 25
                Affiliations
                [02] Tamil Nadu orgnameKalaignar Karunanidhi Institute of Technology orgdiv1Department of Mechanical Engineering orgdiv2Pappampatti Rd, Pallapalayam India
                [03] Chennai Tamilnadu orgnameS.A. Engineering College orgdiv1Department of Mechanical Engineering India
                [01] Tamil Nadu orgnameTamilnadu College of Engineering orgdiv1Department of Automobile Engineering orgdiv2Palanisame Ravi Nagar India
                Article
                S1516-14392022000100268 S1516-1439(22)02500000268
                10.1590/1980-5373-mr-2021-0508
                df7f4deb-4a25-4d19-944a-a68cf0e8d2b7

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 48, Pages: 0
                Product
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                Categories
                Articles

                tool offset distance,AZ91C,AZ31B,brittle fracture,speed of tool traverse,Tool pin geometry

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