Experimental Investigation and Micro Structural Characteristics of GTAW and FSW Welded Dissimilar Aluminum Alloys

Autor:	Eshwaraiah Punna, S. Venukumar, S. M. Gangadhar Reddy, Sairam Kotari
Rok vydání:	2020
Předmět:	Materials science chemistry Aluminium law Gas tungsten arc welding Metallurgy chemistry.chemical_element Welding law.invention
Zdroj:	IOP Conference Series: Materials Science and Engineering. 998:012036
ISSN:	1757-899X 1757-8981
DOI:	10.1088/1757-899x/998/1/012036
Popis:	Current paper shares the study on optimization of parameters for GTAW and FSW Aluminum alloys. Base metals chosen were AA6061 and AA7075, filler metal used for TIG welding is AA4043. Welding Current, Welding speed and gas flow rate were taken as input parameters for GTAW and axial load, weld speed and tool rotation were choosen as variables for FSW. L9 orthogonal array is used for design of experiments. Analysis of variance is used for ranking the parameters. It was found that an average tensile strength of 127MPa is found for GTAW samples and 151 MPa for FSW samples. Thus an overall 19% increase in strength is achieved. Micro structural analysis is done to investigate the reason for variation of strength. It was found that the formation of Mg-Si precipitates has affected the increase in strength for FSW samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5556dc4cde9dac41240c17548ca62a7a https://doi.org/10.1088/1757-899x/998/1/012036 Zobrazit plný text záznamu