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

*Korrespondierende/r Autor/in für diese Arbeit

    Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

    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

    ASJC Scopus subject areas

    • Werkstoffwissenschaften (insg.)
    • Physik der kondensierten Materie
    • Werkstoffmechanik
    • Maschinenbau

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