Mechanical and microstructural characterization of optimized friction stir welded twin roll cast AZ31B sheets

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dc.contributor.author Ammouri, A.H.
dc.contributor.author Achdjian, Haig
dc.contributor.author Dorbane, A.
dc.contributor.author Ayoub, G.
dc.contributor.author Kridli, G.T.
dc.contributor.author Hamade, R.F.
dc.date.accessioned 2017-05-24T13:00:08Z
dc.date.available 2017-05-24T13:00:08Z
dc.identifier.isbn 978-0-7918-4643-8 en_US
dc.identifier.uri http://hdl.handle.net/10725/5668
dc.description.abstract In order to select the optimum parameters for friction stir welding of twin-roll cast (TRC) AZ31B Mg-Al-Cu alloy, mechanical and microstructural characterizations are performed on friction stir welded 3 mm thick sheets under different processing parameters of rotational spindle speed and feed rate. Used was a tool made from high resistance Sverker 21 steel alloy with a 19 mm diameter cylindrical shoulder and a 6.4 mm diameter pin that extrudes 2.7 mm from the bottom of the shoulder. A large number of welded joints were prepared according to a test matrix of various combinations of rotational speed and feed rate. Tensile tests at different temperatures and strain rates were performed on specimens cut with their major axis perpendicular to the welded joints. Static strength tests of these specimens revealed that joints welded at a speed of 1200 rpm and a feed of 150 mm/min resulted in strengths as high as 94% of that of the as received TRC AZ31B metal. For specimens welded at spindle speeds larger than 1400 rpm, microstructural observations revealed the presence of micro cracks and voids located in the zone between the nugget and the thermally affected zone. In order to monitor the effect of lengthy testing times and the observed grain growth associated with slow strain tests, annealing tests under different temperatures and time durations were performed while monitoring grain diameter. Very limited grain growth have been obsereved after annealing and thus the mechanical performnace of the joints was solely due to the effect of the friction stir welding. en_US
dc.language.iso en en_US
dc.publisher ASME en_US
dc.title Mechanical and microstructural characterization of optimized friction stir welded twin roll cast AZ31B sheets en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 201306469 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Friction en_US
dc.identifier.doi http://dx.doi.org/10.1115/IMECE2014-36739 en_US
dc.identifier.ctation Ammouri, A. H., Achdjian, H., Dorbane, A., Ayoub, G., Kridli, G. T., & Hamade, R. F. (2014, November). Mechanical and Microstructural Characterization of Optimized Friction Stir Welded Twin Roll Cast AZ31B Sheets. In ASME 2014 International Mechanical Engineering Congress and Exposition (pp. V02AT02A028-V02AT02A028). American Society of Mechanical Engineers. en_US
dc.author.email ali.ammouri@lau.edu.lb en_US
dc.conference.date November 14–20, 2014 en_US
dc.conference.place Montreal, Quebec, Canada en_US
dc.conference.title ASME 2014 International Mechanical Engineering Congress and Exposition en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2204502 en_US
dc.author.affiliation Lebanese American University en_US
dc.title.volume 2A: Advanced Manufacturing en_US

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