Investigation of the Joinability of SX Steel by Diffusion Welding Method Using Different Interlayers

Authors : Jiyan Güney, M Selçuk Keskin, Haluk Kejanlı

Pages : 641-652

Doi:10.24012/dumf.1490715

View : 139 | Download : 125

Publication Date : 2024-09-30

Article Type : Research Paper

Abstract :SX steels, a type of stainless steel enriched with high silicon content, are frequently used in critical applications of the industry due to their resistance to many acids. Areas of use are acid tanks, acid coolers, acid pipe systems and acid radiators. Increasing areas of use have increased the need to combine with different materials. This study aimed to join the different layers by diffusion welding method using Cu, Ni, Al7072 and Al8079. The samples were combined by keeping them under 5MPa pressure for 60 minutes at 1000 °C in an argon gas environment. Phase changes occurring in the junction area due to the effect of different interlayers were tried to be determined by SEM-EDS and XRD analyses. The changing metallographic structure of the intermediate layers was examined using an optical microscope, and the microhardness change of the joining region was determined with the HV hardness measuring device. While alpha-ferrite structure was observed in the Cu interlayered connections in the samples, multiphase structures were observed in the Al7072 and SX-Al8079 interconnected samples, and the presence of intermetallic phases was detected in both the interface and diffusion zones in the Ni interlayered samples.
Keywords : SX çeliği, difüzyon kaynağı, mikro sertlik, Aratabaka

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