Effect of friction stir welding conditions on properties and microstructures of high strength automotive steel

Autor:	M. Gallagher, Russell J. Steel, Tracy W. Nelson, Michael P. Miles, E. Olsen
Rok vydání:	2009
Předmět:	Materials science business.industry Metallurgy Automotive industry Welding Condensed Matter Physics Microstructure Process conditions law.invention law Martensite Ferrite (iron) Friction stir welding General Materials Science Friction welding Composite material business
Zdroj:	Science and Technology of Welding and Joining. 14:228-232
ISSN:	1743-2936 1362-1718
DOI:	10.1179/136217108x388633
Popis:	The use of high strength steels (HSS) and ultra high strength steels (UHSS) is increasing in automotive applications to reduce vehicle weight and to improve structural performance. This study focused on the properties and microstructures of friction stir welded steel sheets, as a function of welding conditions. Tooling feeds and speeds had a significant impact on mechanical properties and microstructures of the welds. For example, at constant tool speeds higher feedrates produced softer welds with large amounts of primary ferrite, compared with lower feedrates which produced harder welds and a greater fraction of martensite. These results illustrate the potential of adjusting weld properties and microstructures by using different friction stir welding process conditions for HSS and UHSS alloys.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::896a33e03dff101d2818b864b9ac011e https://doi.org/10.1179/136217108x388633 Zobrazit plný text záznamu Plný text ve formátu PDF