Microstructure and residual stresses in a friction stir welded butt joint of as-cast ZK60 alloy containing rare earths

Erenilton Pereira Da Silva, Verona Biancardi Oliveira, Victor Ferrinho Pereira, Omar Maluf, Ricardo Henrique Buzolin, Haroldo Cavalcanti Pinto

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Abstract

    The effect of a travel speed of 200 mm/min as well as a tool rotational speed of 1200 rpm on butt joint quality of friction stir welding (FSW) ZK60 magnesium casting alloy containing 1.5 wt.% rare earths (ZK60-1.5RE) was investigated to determine microstructure and residual stresses. FSW results in the generation of heterogeneous metallurgical structures consisting of the base material (BM), stirred zone (SZ) and thermo-mechanical affected zone (TMAZ). The stirring action also produced a non-uniform distribution and segregation of intermetalics. The transversal distribution of the longitudinal welding stresses exhibits a "M-like" shape with mostly tensile stresses under the shoulder region and only one compressive stress peak in the advancing side of the SZ and TMAZ. It could be demonstrated that FSW of ZK60-1.5RE alloy was successful in the welding conditions applied during the present work.

    Originalspracheenglisch
    Seiten (von - bis)775-779
    Seitenumfang5
    FachzeitschriftMaterials research
    Jahrgang20
    Ausgabenummer3
    DOIs
    PublikationsstatusVeröffentlicht - 1 Mai 2017

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    butt joints
    friction stir welding
    Friction stir welding
    cast alloys
    Rare earths
    residual stress
    Residual stresses
    friction
    rare earth elements
    Friction
    welding
    microstructure
    Microstructure
    Welding
    Magnesium castings
    stirring
    shoulders
    tensile stress
    Compressive stress
    Tensile stress

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      ASJC Scopus subject areas

      • !!Materials Science(all)
      • !!Condensed Matter Physics
      • !!Mechanics of Materials
      • !!Mechanical Engineering

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      Microstructure and residual stresses in a friction stir welded butt joint of as-cast ZK60 alloy containing rare earths. / Da Silva, Erenilton Pereira; Oliveira, Verona Biancardi; Pereira, Victor Ferrinho; Maluf, Omar; Buzolin, Ricardo Henrique; Pinto, Haroldo Cavalcanti.

      in: Materials research, Jahrgang 20, Nr. 3, 01.05.2017, S. 775-779.

      Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

      Da Silva, Erenilton Pereira ; Oliveira, Verona Biancardi ; Pereira, Victor Ferrinho ; Maluf, Omar ; Buzolin, Ricardo Henrique ; Pinto, Haroldo Cavalcanti. / Microstructure and residual stresses in a friction stir welded butt joint of as-cast ZK60 alloy containing rare earths. in: Materials research. 2017 ; Jahrgang 20, Nr. 3. S. 775-779.
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      title = "Microstructure and residual stresses in a friction stir welded butt joint of as-cast ZK60 alloy containing rare earths",
      abstract = "The effect of a travel speed of 200 mm/min as well as a tool rotational speed of 1200 rpm on butt joint quality of friction stir welding (FSW) ZK60 magnesium casting alloy containing 1.5 wt.{\%} rare earths (ZK60-1.5RE) was investigated to determine microstructure and residual stresses. FSW results in the generation of heterogeneous metallurgical structures consisting of the base material (BM), stirred zone (SZ) and thermo-mechanical affected zone (TMAZ). The stirring action also produced a non-uniform distribution and segregation of intermetalics. The transversal distribution of the longitudinal welding stresses exhibits a {"}M-like{"} shape with mostly tensile stresses under the shoulder region and only one compressive stress peak in the advancing side of the SZ and TMAZ. It could be demonstrated that FSW of ZK60-1.5RE alloy was successful in the welding conditions applied during the present work.",
      keywords = "Friction stir welding, Microstructure, Rare-earth elements, Residual stress, Zk60 alloy",
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      T1 - Microstructure and residual stresses in a friction stir welded butt joint of as-cast ZK60 alloy containing rare earths

      AU - Da Silva, Erenilton Pereira

      AU - Oliveira, Verona Biancardi

      AU - Pereira, Victor Ferrinho

      AU - Maluf, Omar

      AU - Buzolin, Ricardo Henrique

      AU - Pinto, Haroldo Cavalcanti

      PY - 2017/5/1

      Y1 - 2017/5/1

      N2 - The effect of a travel speed of 200 mm/min as well as a tool rotational speed of 1200 rpm on butt joint quality of friction stir welding (FSW) ZK60 magnesium casting alloy containing 1.5 wt.% rare earths (ZK60-1.5RE) was investigated to determine microstructure and residual stresses. FSW results in the generation of heterogeneous metallurgical structures consisting of the base material (BM), stirred zone (SZ) and thermo-mechanical affected zone (TMAZ). The stirring action also produced a non-uniform distribution and segregation of intermetalics. The transversal distribution of the longitudinal welding stresses exhibits a "M-like" shape with mostly tensile stresses under the shoulder region and only one compressive stress peak in the advancing side of the SZ and TMAZ. It could be demonstrated that FSW of ZK60-1.5RE alloy was successful in the welding conditions applied during the present work.

      AB - The effect of a travel speed of 200 mm/min as well as a tool rotational speed of 1200 rpm on butt joint quality of friction stir welding (FSW) ZK60 magnesium casting alloy containing 1.5 wt.% rare earths (ZK60-1.5RE) was investigated to determine microstructure and residual stresses. FSW results in the generation of heterogeneous metallurgical structures consisting of the base material (BM), stirred zone (SZ) and thermo-mechanical affected zone (TMAZ). The stirring action also produced a non-uniform distribution and segregation of intermetalics. The transversal distribution of the longitudinal welding stresses exhibits a "M-like" shape with mostly tensile stresses under the shoulder region and only one compressive stress peak in the advancing side of the SZ and TMAZ. It could be demonstrated that FSW of ZK60-1.5RE alloy was successful in the welding conditions applied during the present work.

      KW - Friction stir welding

      KW - Microstructure

      KW - Rare-earth elements

      KW - Residual stress

      KW - Zk60 alloy

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      DO - 10.1590/1980-5373-MR-2016-0899

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