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Role of inclusions in formation of high strength steel weld metal microstructures
University West, Department of Engineering Science, Division of Mechanical Engineering. (PTW)
ESAB AB.
University West, Department of Engineering Science, Division of Mechanical Engineering. (PTW)ORCID iD: 0000-0001-8822-2705
2013 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, Vol. 18, no 7, p. 603-609Article in journal (Refereed) Published
Abstract [en]

A series of high strength weld metals with varying Al content are studied. The inclusions are characterised using energy dispersive X-ray analysis and electron diffraction. The tendency for alignment of the microstructure is characterised quantitatively using electron backscatter diffraction and a recently developed post-processing technique. Correlation is found between the inclusion phases present and the amount of aligned neighbouring grains in the microstructure. It is shown that amorphous Si-Al oxides form at low Al weld metal contents and an Mg-Al spinel at higher contents. The former is associated with less alignment of the microstructure and therefore higher impact toughness. The effect of these inclusions on the formation of the microstructure is discussed.

Place, publisher, year, edition, pages
2013. Vol. 18, no 7, p. 603-609
Keywords [en]
High strength steel, welding, Work-integrated Learning, WIL
Keywords [sv]
AIL
National Category
Production Engineering, Human Work Science and Ergonomics Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Work Integrated Learning
Identifiers
URN: urn:nbn:se:hv:diva-4929DOI: 10.1179/1362171813Y.0000000138ISI: 000324312200009Scopus ID: 2-s2.0-84883710568OAI: oai:DiVA.org:hv-4929DiVA, id: diva2:580388
Available from: 2012-12-21 Created: 2012-12-21 Last updated: 2019-05-03Bibliographically approved
In thesis
1. Quantitative Characterisation of packet Crystallography in high strength steel weld metals
Open this publication in new window or tab >>Quantitative Characterisation of packet Crystallography in high strength steel weld metals
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Applied Physics, Chalmers University of Technology, 2012. p. 69
Keywords
acicular ferrite, bainite, inclusions, EBSD, SEM, TEM, misorientation, high strength weld metals, microstructure, characterisation
National Category
Engineering and Technology
Research subject
ENGINEERING, Physics
Identifiers
urn:nbn:se:hv:diva-4862 (URN)
Presentation
2012-11-30, A820, Chalmers, Göteborg, 09:31 (English)
Opponent
Supervisors
Available from: 2012-12-21 Created: 2012-12-07 Last updated: 2019-03-15Bibliographically approved

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Zachrisson, JanKarlsson, Leif

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