OPTIMIZATION OF THE PROCESS PARAMETERS OF FRICTION-WELDED St-Al JOINTS
Küçük Resim Yok
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inst Za Kovinske Materiale I In Tehnologie
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Friction welding is a solid-state welding process. applicable to similar and dissimilar ferrous and non-ferrous metals. Combining aluminium and steel parts is one of the most suitable methods for obtaining cheaper and lightweight products. Due to their different properties, compositions of these materials provide multiple advantages. In the present study, stainless-steel and aluminium (St-Al) parts were friction welded with an aim to optimize the process parameters. The joints obtained with various process-parameter combinations were subjected to tensile tests. Empirical relationships were developed to predict the strength of the joints using the RSM (the response surface methodology) and the coherency of the model was tested. The tensile properties. microhardness variations, scanning-electron-microscopy (SEM) examinations, energy-dispersive-spectroscopy (EDS) and X-ray diffraction (XRD) analyses of the welded specimens were evaluated. Additionally, the tensile-strength test results were analyzed using analysis of variance (ANOVA) with a confidence level of 95 % to find a statistically significant difference. The ANOVA analysis revealed that the friction pressure/friction time ratio had a greater influence on the tensile strength of the joints than the upset pressure/upset time ratio. However, it was found that some of the stainless-steel/aluminium welds had a poor strength due to the accumulation of the alloying elements at the joint interface.
Açıklama
Anahtar Kelimeler
St-Al Joints, Friction Welding, Tensile Strength, Response Surface Methodology, Stainless Steels Aisi-304, 5052 Aluminum-Alloy, Interface Properties, Welding Process
Kaynak
Materiali In Tehnologije
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
53
Sayı
2
