Improvement of toughness and strength of thick structural steel weld by friction stir welding conditions

Autor:	R Nishimoto, Rintaro Ueji, Hidetoshi Fujii, T Miyazawa, Yoshiaki Morisada, Y Iwamoto
Rok vydání:	2013
Předmět:	Heat-affected zone Toughness Materials science Bainite Alloy Metallurgy Welding engineering.material Condensed Matter Physics law.invention law Ferrite (iron) Ultimate tensile strength engineering Friction stir welding General Materials Science Composite material
Zdroj:	Science and Technology of Welding and Joining. 18:287-292
ISSN:	1743-2936 1362-1718
Popis:	Structural steel plates with tensile strength of 490 MPa and 6 mm in thickness were successfully joined with microstructural control by single sided one-pass butt friction stir welding (FSW). The microstructure in the stir zone (SZ) could be changed to bainite, bainite with proeutectoid ferrite, and fine equiaxed ferrite based on the welding temperature. The bainite increased the hardness and tensile strength, and the ferrite gave the joint similar mechanical properties similar to the base metal. The welding temperature was controlled between below Ac1 and above Ac3 by the rotating rate of the tool and tool materials; i.e. Ir–Re alloy and sintered c-BN with W–Re.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::236c5473aac440f813a71e69f604d9d9 https://doi.org/10.1179/1362171812y.0000000105 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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