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    Effects of alloying element and cooling rate on properties of AM60 Mg alloy
    (Iop Publishing Ltd, 2019) Elen, Levent; Çiçek, Bünyamin; Koç, Erkan; Türen, Yunus; Sun, Yavuz; Ahlatcı, Hayrettin
    Magnesium and its alloys have become important structural materials in the last couple of decades due to their exceptional and mechanical properties. In this study, the effects of the introduction Cd, Bi, and Sn alloying elements were introduced into AM60 alloys produced from Mg-Al-Mn triple junction in order to improve the microstructural and mechanical properties. The weight percent of the alloying elements was chosen as 0.5% wt besides the introduction of the additional alloying elements, the effect of cooling rate on microstructural and mechanical properties of the alloys have been investigated. The results showed that the alloying elements introduced to AM60 resulted in an improvement in the mechanical properties of the alloys, which is attributed to the changes in the microstructure. The higher cooling rate led to the formation of the finer a-Mg master matrix which in turn enhanced the mechanical properties of the alloys. It was observed that the intermetallic phase of beta-Mg17Al12 at the grain boundaries became thinner due to the rapid cooling rate and the introduction of the alloying elements, and the continuity decreased and the intergranular distance shortened. The addition of the alloying element increased the tensile strength of the AM60 alloy from 140 MPa to 210 MPa and the elongation values increased from 5% to 22%. The effects of the alloying elements and the cooling rate on the hardness and yields properties of the samples were also studied.
  • Küçük Resim
    Öğe
    Transfer of project development training to vocational high school students to three axis Mini CNC Router design: an applied study
    (Ahmet Akçay, 2017-12-31) Yıldırım, Ferdi; Doğan, Onur; Elen, Levent; Çiçek, Bünyamin
    The aim of this study is to determine the success of the project development and rehabilitation courses given to university students on their students. In this direction, theoretical and practical training was given to the students on the theoretical calculations of machine construction, machine design and manufacturing, assembly stages and system analysis and study. As a result of this training, students were asked to design and manufacture a three-axis mini CNC router. During the design and manufacturing process, the necessary technical support was provided to the students where they had problems. As a result of the study, it has been seen that the students have successfully transferred the theoretical knowledge they have received to CNC router design and manufacturing. After the manufacturing process is completed, a sample is processed and the functionality of the mini CNC router machine is tested and a successful result is obtained. In addition, student achievement was statistically analyzed with a written examination including CNC machine design, construction principles and manufacturing operations. The results and analyzes obtained when the exams are evaluated; shows that the success rate of the exam is 77.75% in the light of the theoretical and practical information that the students have taken during the project period.