Small-scale resistance spot welding of austenitic stainless steels

Autor:	Shin Toji, Atsushi Yamamoto, Shinji Fukumoto, Kana Fujiwara
Rok vydání:	2008
Předmět:	Austenite Materials science Mechanical Engineering Metallurgy Laser beam welding Welding Condensed Matter Physics Electric resistance welding Microstructure law.invention Cracking Mechanics of Materials law General Materials Science Spot welding Joint (geology)
Zdroj:	Materials Science and Engineering: A. 492:243-249
ISSN:	0921-5093
DOI:	10.1016/j.msea.2008.05.002
Popis:	Small-scale resistance spot welding (SSRSW) was carried out for austenitic stainless steels. A weld lobe that shows the process window for making sound joints was obtained for type 304 stainless steel thin sheets, and the effects of welding current, force and weld time on joint strength and nugget size were investigated. The cooling rate that was estimated from the solidification cell size was approximately 2.4 × 10 5 K/s which is almost similar to that produced by laser beam welding. The microstructures of weld zones were almost fully austenitic due to the rapid solidification rate. Despite the fully austenitic microstructure, no hot cracking was found in types 302, 304, 316L, 310S and 347 austenitic stainless steels by SSRSW. Rapid cooling rate in SSRSW made it difficult to predict the microstructures from the conventional Schaeffler diagram.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a2204f001e38f1bf481413b866e6e7a https://doi.org/10.1016/j.msea.2008.05.002 Zobrazit plný text záznamu Full Text from ScienceDirect