Microstructure Evolution during Friction Stir Spot Welding of TRIP Steel

Trine Colding Lomholt, Karen Pantleon, Marcel A. J. Somers

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch


In this study, the feasibility of friction stir spot welding of TRIP steel is investigated. In addition to manufacturing successful welds, the present study aims at a fundamental understanding of the mechanisms occurring at the (sub)micron scale during friction stir spot welding. As one of the main parameters to control friction stir welding, the influence of the rotational speed of the tool was investigated. Three different rotational speeds (500 rpm, 1000 rpm and 1500 rpm, respectively) were applied. The microstructure of the welded samples was investigated with reflected light microscopy, scanning electron microscopy, and electron backscatter diffraction. Microhardness measurements and lap-shear tensile tests completed the investigations of the welded samples and allow evaluation of the quality of the welds.
Original languageEnglish
Title of host publicationFriction Stir Welding
Publication date2010
Publication statusPublished - 2010
EventFriction Stir Welding : International Symposium - Timmendorfer Strand, Germany
Duration: 1 Jan 2010 → …
Conference number: 8


ConferenceFriction Stir Welding : International Symposium
CityTimmendorfer Strand, Germany
Period01/01/2010 → …


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