Microstructure and mechanical properties of AA7075/AA5182 jointed by FSW
Yükleniyor...
Tarih
2019-06
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Journals & Books
Erişim Hakkı
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-ShareAlike 3.0 United States
Attribution-NonCommercial-ShareAlike 3.0 United States
Özet
In this study, AA7075 and AA5182 aluminium alloys were joined using different rotation speeds (980, 1325 and
1800 rpm), feed rates (108 and 233 mm/min) and stirred pins having two different geometries (conical helical
and triangular). Microstructures of welding joints were examined by an optical microscope and a scanning
electron microscope (SEM). Vickers hardness measurements were performed in the welding zone of samples
removed from each welded plate. Tensile and fatigue tests were also applied to the test specimens taken from the
welded plates. After the tensile tests, the surface fractures and possible welding defects were scanned via SEM.
The best mechanical properties were obtained when conical helical shape stirrer pins were used. The values were
265 MPa for tensile test and 159 MPa for fatigue test. The hardness value was very close to each other and varied
depending on the rotation speed. The highest hardness value was determined as 87 HV in the weld center at
1325-rpm rotation speed.
Açıklama
Anahtar Kelimeler
FSW, Fatigue Strength, Microstructure, Tensile Strength
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
268
Sayı
Künye
Çelik, Y.H., Çetkin, E., Temiz, Ş. (2019). Microstructure and mechanical properties of AA7075/AA5182 jointed by FSW. Journal of Materials Processing Technology, 248, pp.107-116. DOI:https://doi.org/10.1016/j.jmatprotec.2019.01.005