AS21 ve AJ21 Magnezyum Alaşımlarının Mekanik ve İşlenebilirlik Özelliklerinin İncelenmesi

Öz Deneysel çalışmada, %1 Si ve %1 Sr içeren, AS21 ve AJ21 magnezyum alaşımlarının mekanik ve işlenebilirlik özelliklerine alaşım bileşenlerinin etkisi incelenmiştir. Alaşım kompozisyonuna bağlı olarak mikroyapı değişimi ve bunun alaşımın mekanik özellikler ile kesme kuvvetlerine ve yüzey pürüzlülüğüne (işlenebilirliğe) etkileri araştırılmıştır. AJ21 alaşımının mekanik özelliklerinin ve işlenebilirliğinin daha düşük olduğu görülmüştür. Diğer taraftan AJ21 alaşımının ise yüzey kalitesinin daha iyi olduğu görülmüştür.

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  • King, J. F. Development of Practical High Temperature Magnesium Casting Alloys, Magnesium Alloys and their Applications. (Edited by B.L.Mordike and K. U. Kainer),WILEY-VCH, Weinheim, Germany, pp.14-22, 2000.
  • Friedrich, H.E., Mordike, B.L. Magnesium Technology. Springer-Verlag Berlin Heidelberg, Germany, 2006.
  • Zhang, P. Creep behavior of the die-cast Mg–Al alloy AS21. Scripta Materialia, 52(4), pp. 277-282, 2005.
  • Tönshoff, H. K., Denkena, B., Winkler, R J., Podolsky, C. Machining, Magnesium Technology, Metallurgy, Design Data, Applications, (Ed. H. E. Friedrich and B. L.Mordike), Springer-Verlag Berlin Heidelberg, Germany, 398, 2006.
  • Akyüz, B. Influence of Al content on the machinability of AZ series cast Mg alloys. Trans. Nonferrous Met. Soc. China 23; pp. 2243−2249, 2013.
  • King, J. F. Technology of Magnesium and Magnesium Alloys, Magnesium Technology (Edited by H.E. Friedrich and B.L.Mordike) Springer-Verlag Berlin Heidelberg, Germany, 2006.
  • Tomac, N., Tønnesen, K., Mikac, T. Study of Influence of Aluminum Content on Machinability of
  • Magnesium Alloys, Strojarstvo, 50 (6), pp. 363 – 367, 2008.
  • Tönshoff, H.K., Friemuth, T., Winkler, J., Podolsky, C. Improving the Characteristics of Magnesium Workpieces by Burnishing Operations, Magnesium Alloys and their Applications, (Editedby K. U. Kainer) WILEY-VCH Verlag GmbH, Weinheim, Germany, 406, 2006.
  • Unal, M. An Investigation of Casting Properties of Magnesium Alloys, Gazi University, Institute of Science And Technology, Ph.D. Thesis, 2008.
  • Evangelista, E., Gariboldi, E., Lohne, O., Spigarelli, S., High-temperature behaviour of as die-cast and heat treated Mg–Al–Si AS21X magnesium alloy. Materials Science and Engineering: A, 387, pp. 41-45, 2004.
  • G.R. Ma, X.L. Li, L. Xiao, Q.F. Li, Effect of holding temperature on microstructure of an AS91 alloy during semisolid isothermal heat treatment. Journal of Alloys and Compounds, 496, pp. 577–581, 2010.
  • Akyüz, B. Comparison of the machinability and wear properties of magnesium alloys, The International Journal of Advanced Manufacturing Technology, Vol. 75, Issue 9-12, p1735-1742, DOI 10.1007/s00170-014-6256-y. ISSN:0268-3768. 2014.
  • Gil-Santos, N. Moelans, N. Hort, O. Van der Biest, Identification and description of intermetallic compounds in Mg–Si–Sr cast and heat-treated alloys. Journal of Alloys and Compounds, 669, pp. 123-133, 2016.
  • Tönshoff, H.K., Winkler, J. The Influence of Tool Cutting in Machining of Magnesium. Surface and Coating Technology, 94-95, pp. 610-616, 1997.
  • Liu, K., Li , X.P., Liang, S.Y. The mechanism of ductile chip formation in cutting of brittle materials, Int J Adv. Manuf. Technology33, pp. 875-884, 2007.
  • Zhao, X.L., Tang, Y., Deng, W.J., Zhang, F.Y. Effect of Tool Flank Wear on the Orthogonal Cutting Process. Key Engineering Materials, Vol. 329, pp. 705-710, 2007.
  • Stephenson, D. A., Agapiou, J. S.:Metal cutting theory and practice. CRC press, 2016.
  • Knight, W. A., Boothroyd, G.:Fundamentals of metal machining and machine tools. CRC Press, 2005.
  • Kalpakjian, S, Schmid, S.R. :Manufacturing Engineering and Technology, Prentice Hall., 2010.
  • Grover, M P.: Principles of Modern Manufacturing (4th Ed.), John Wiley & Sons, Inc. 2010.
  • Black, J T, Kohser, R.A.: Materials&Processes in Manufacturing (10th Ed.), John Wiley&Sons, Inc. 2008.