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Güncel Gönderiler
Öğe AISI430/DUROSTAT500 TIG kaynaklı birleştirmesinin kırık yüzey morfolojisinin incelenmesi(2023) Aydın, SinanBu çalışmada AISI430 ve DUROSTAT500 çelikleri çift taraflı TIG kaynak yöntemiyle birleştirilmiştir. Birleştirmelerin mikro yapı, çekme ve çentik darbe testlerinin kırılma sonrası kırık yüzey morfolojileri değerlendirilmiştir. Akım şiddetinin yoğunluğu ile tam bir nüfuziyet sağlanmıştır. Farklı iki çelik TIG yöntemi ile başarılı bir şekilde birleştirilmiştir. Yüksek akım yoğunluğu ile Cr, C ve Ni elementlerinin difüzyonu meydana gelmiştir. Çekme ve çentik darbe testi sonrası numunelerin kırık yüzeylerinde gevrek kırılma tespit edilmiştir.Öğe Conical Channel Design in AA7075/AZ91 Materials Joining with Mechanical Locking Method (MLM)(2022) Mercan, SerdarIn industrial applications, materials with different chemical and physical properties are used by joining them. The main purpose is to achieve high performance at the most affordable cost by joining the superior properties of materials. In joining processes, many methods such as casting, bonding, rivets, and bolts are used, especially the welding method. The mechanical locking method, which is a new and environmentally friendly method among joining methods, stands out as a successful method especially in joining different metal types. The patent studies of the method, numbered TR 2015 03256 B, were completed in 2017 and methodological research continues for its use in different industry sectors. One of the materials joined in the method is called the mold piece and the other as the reshaped piece. Within the scope of this study, the optimization of the stress distribution due to the channel geometry on the AZ91, which is designed as a mold part from the AA7075/AZ91 material pairs joined with the mechanical locking method. It is aimed that the radiuses to be made in the canal will be in a way that will not adversely affect the tensile values, and will facilitate the material flow. In the analysis, fixed connection angle and fixed channel depth determined in accordance with the data obtained from the results of the previous research were used. ANSYS package program, Workbench version 18.2, Static Structural Module, which uses the finite element method, was used in the analysis. All the work was done on 3D geometric models. According to the results obtained, it has been determined that the appropriate radiuses to be made in the channel part of the mold part reduce the stress values and facilitate the material flow.
