TY - JOUR

T1 - Behavior of microstructure and mechanical properties in the stir zone of friction stir welded ME21 magnesium alloy

AU - Pasetti-Roza, Andres

AU - Victoria-Hernandez, José

AU - Costa Pereira da Cunha, Pedro Henrique

AU - de Lima Lessa, Cleber Rodrigo

AU - Andrei Bergmann, Luciano

AU - Kurz, Gerrit

AU - Letzig, Dietmar

AU - Klusemann, Benjamin

N1 - Funding Information: The authors would like to thank Mr. Jan Carstensen from Helmholtz-Zentrum Hereon, Institute of Materials Mechanics, Solid State Materials Processing for the support in conducting the welding experiments. In addition, the authors would like to thank the Helmholtz-Zentrum Hereon for funding this work. Publisher Copyright: © 2024

PY - 2024/3/1

Y1 - 2024/3/1

N2 - In this work, Friction Stir Welding (FSW) of magnesium alloy ME21 in a T-profile is performed with a relatively higher welding speed than usual in this material. The FSW process parameters, i.e., rotational speed and welding speed, are investigated focused within its inherent microstructural and mechanical properties on the stir zones of the welded joints. The concept of a Stribeck Curve in tribological systems, is transferred to FSW to explain the transition between insufficient and full plasticization of the material. The stir zone presented a strong grain refinement due to the activation of dynamic recrystallization along with a completely changed crystallographic texture and orientation due to FSW. The hardness is overall improved, while the ductility and tensile strength were reduced. The microstructure and texture in the stir zone were not strongly influenced by changes in the welding parameters.

AB - In this work, Friction Stir Welding (FSW) of magnesium alloy ME21 in a T-profile is performed with a relatively higher welding speed than usual in this material. The FSW process parameters, i.e., rotational speed and welding speed, are investigated focused within its inherent microstructural and mechanical properties on the stir zones of the welded joints. The concept of a Stribeck Curve in tribological systems, is transferred to FSW to explain the transition between insufficient and full plasticization of the material. The stir zone presented a strong grain refinement due to the activation of dynamic recrystallization along with a completely changed crystallographic texture and orientation due to FSW. The hardness is overall improved, while the ductility and tensile strength were reduced. The microstructure and texture in the stir zone were not strongly influenced by changes in the welding parameters.

KW - EBSD analysis

KW - FSW

KW - Magnesium alloy

KW - Microstructure

KW - Stick-Slip

KW - Stribeck curve

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85186770597&partnerID=8YFLogxK

U2 - 10.1016/j.jmrt.2024.02.188

DO - 10.1016/j.jmrt.2024.02.188

M3 - Journal articles

AN - SCOPUS:85186770597

VL - 29

SP - 4895

EP - 4901

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

SN - 2238-7854

ER -