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Friction-stir welding of aluminium alloy 5083
Klobčar, Damjan (Author), Kosec, Ladislav (Author), Pietras, Adam (Author), Smolej, Anton (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:DOC-CJP1NJBK This link opens in a new window

Abstract
A study was made of the weldability of 4-mm-thick aluminium-alloy 5083 plates using friction-stir welding. A plan of experiments was prepared based on the abilities of a universal milling machine, where the tool-rotation speed varied from 200 r/min to 1250 r/min, the welding speed from 71 mm/min to 450 mm/min and the tool tilt angle was held constant at 2. The factors feed per revolution (FPR) and revolution per feed (RPF) were introduced to get a better insight into the friction-stirring process. Samples for microstructure analyses, Vickers micro-hardness measurements and special miniature tensile-testing samples were prepared. The microstructure was prepared for observation on a light microscope under a polarised light source. A set of optimal welding parameters was determined at a FPR of 0.35 mm/r, at which quality welds can be made with a minimal increase in the weld hardness and an up to 15 % drop in the tensile strength.

Language:English
Keywords:varjenje s trenjem in mešanjem, pločevina, mehanske lastnosti, zvari, friction stir welding, mechanical properties, welds
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2012
Publisher:Inštitut za kovinske materiale in tehnologije
Number of pages:str. 483-488
Numbering:Letn. 46, št. 5
UDC:621.791.1:669.715
ISSN on article:1580-2949
COBISS.SI-ID:12490011 Link is opened in a new window
Views:377
Downloads:139
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 This link opens in a new window

Secondary language

Language:Slovenian
Title:Varjenje s trenjem in mešanjem aluminijeve zlitine 5083
Abstract:
Izdelana je študija varivosti 4 mm debele pločevine iz aluminijeve zlitine 5083 pri varjenju s trenjem in mešanjem. Načrt eksperimentov je bil pripravljen na podlagi sposobnosti univerzalnega frezalnega stroja. Spreminjali smo hitrost vrtenja orodja od 200-1250 r/min, hitrost varjenja 71-450 mm/min, kot nagiba orodja pa je bil konstanten pri 2°. Vpeljana sta bila faktorja podajanje na vrtljaj (FPR) in obratov na podajanje (RPF), s katerima bolj nazorno prikažemo vpliv parametrov procesa. Iz izdelanih varov smo pripravili vzorec za analizo mikrostrukture, vzorec za meritev trdote po Vickersu ter posebne miniaturne epruvete za natezni preizkus. Mikrostruktura je bila pripravljena za opazovanje na svetlobnem mikroskopu v polarizirani svetlobi. Optimalni parametri varjenja so bili ugotovljeni pri FPR 0,35 mm/r, pri čemer dobimo kakovostne zvare, z minimalnim povečanjem trdote vara in do 15-odstotnim padcem natezne trdnosti.


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