Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel

Rasoul Pouriamanesh, Kamran Dehghani, Andreas Hütter, Rudolf Vallant, Norbert Enzinger, Christof Sommitsch

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschung

Abstract

In this study Friction Stir Welding (FSW) was applied to incorporate TiO2 particles of different volume fractions into HSLA X70 steel to form a composite structure in the nugget zone. The process was performed with and without powders at rotational speeds of 400 to 1000 rpm and traverse speed of 30 mm/min. Microhardness was measured to evaluate the mechanical properties
of the stir zone. The microstructure of the different zones (weld nugget - thermo-mechanically affected zone and head affected zone) was studied by optical and scanning electron microscopy. Different ferrite phases with variable grain sizes were generated in the nugget zone when performing FSW without TiO2 powder. In case of using the powders, the resulting microstructure
was a combination of fine ferrite grains and acicular ferrite which has better mechanical properties. The enhanced properties are attributed to a uniform dispersion of the TiO2 particles in a matrix of ultra-fine grains of ferrite and acicular ferrite.
Originalspracheenglisch
Titel41th CWS International conference Welding 2016
ErscheinungsortOpatija
Seiten46-55
ISBN (elektronisch)978-953-7518-04-2, Croatien Welding Society
PublikationsstatusVeröffentlicht - 2016

Fields of Expertise

  • Advanced Materials Science
  • Mobility & Production

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

Dies zitieren

Pouriamanesh, R., Dehghani, K., Hütter, A., Vallant, R., Enzinger, N., & Sommitsch, C. (2016). Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel. in 41th CWS International conference Welding 2016 (S. 46-55). Opatija.

Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel. / Pouriamanesh, Rasoul; Dehghani, Kamran; Hütter, Andreas; Vallant, Rudolf; Enzinger, Norbert; Sommitsch, Christof.

41th CWS International conference Welding 2016. Opatija, 2016. S. 46-55.

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschung

Pouriamanesh, R, Dehghani, K, Hütter, A, Vallant, R, Enzinger, N & Sommitsch, C 2016, Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel. in 41th CWS International conference Welding 2016. Opatija, S. 46-55.
Pouriamanesh R, Dehghani K, Hütter A, Vallant R, Enzinger N, Sommitsch C. Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel. in 41th CWS International conference Welding 2016. Opatija. 2016. S. 46-55
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abstract = "In this study Friction Stir Welding (FSW) was applied to incorporate TiO2 particles of different volume fractions into HSLA X70 steel to form a composite structure in the nugget zone. The process was performed with and without powders at rotational speeds of 400 to 1000 rpm and traverse speed of 30 mm/min. Microhardness was measured to evaluate the mechanical propertiesof the stir zone. The microstructure of the different zones (weld nugget - thermo-mechanically affected zone and head affected zone) was studied by optical and scanning electron microscopy. Different ferrite phases with variable grain sizes were generated in the nugget zone when performing FSW without TiO2 powder. In case of using the powders, the resulting microstructurewas a combination of fine ferrite grains and acicular ferrite which has better mechanical properties. The enhanced properties are attributed to a uniform dispersion of the TiO2 particles in a matrix of ultra-fine grains of ferrite and acicular ferrite.",
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T1 - Effect of Friction Stir Welding on Microstructure and Properties of Micro-TiO_2 doped HSLA Steel

AU - Pouriamanesh, Rasoul

AU - Dehghani, Kamran

AU - Hütter, Andreas

AU - Vallant, Rudolf

AU - Enzinger, Norbert

AU - Sommitsch, Christof

PY - 2016

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N2 - In this study Friction Stir Welding (FSW) was applied to incorporate TiO2 particles of different volume fractions into HSLA X70 steel to form a composite structure in the nugget zone. The process was performed with and without powders at rotational speeds of 400 to 1000 rpm and traverse speed of 30 mm/min. Microhardness was measured to evaluate the mechanical propertiesof the stir zone. The microstructure of the different zones (weld nugget - thermo-mechanically affected zone and head affected zone) was studied by optical and scanning electron microscopy. Different ferrite phases with variable grain sizes were generated in the nugget zone when performing FSW without TiO2 powder. In case of using the powders, the resulting microstructurewas a combination of fine ferrite grains and acicular ferrite which has better mechanical properties. The enhanced properties are attributed to a uniform dispersion of the TiO2 particles in a matrix of ultra-fine grains of ferrite and acicular ferrite.

AB - In this study Friction Stir Welding (FSW) was applied to incorporate TiO2 particles of different volume fractions into HSLA X70 steel to form a composite structure in the nugget zone. The process was performed with and without powders at rotational speeds of 400 to 1000 rpm and traverse speed of 30 mm/min. Microhardness was measured to evaluate the mechanical propertiesof the stir zone. The microstructure of the different zones (weld nugget - thermo-mechanically affected zone and head affected zone) was studied by optical and scanning electron microscopy. Different ferrite phases with variable grain sizes were generated in the nugget zone when performing FSW without TiO2 powder. In case of using the powders, the resulting microstructurewas a combination of fine ferrite grains and acicular ferrite which has better mechanical properties. The enhanced properties are attributed to a uniform dispersion of the TiO2 particles in a matrix of ultra-fine grains of ferrite and acicular ferrite.

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BT - 41th CWS International conference Welding 2016

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