İbrahim BİLİZ, Musa KILIÇ, Adem BAKKALOĞLU

INVESTIGATION OF MICROSTRUCTURE AND MICROHARDNESS PROPERTIES OF CO AND CR REINFORCED NIAL INTERMETALLIC COMPOUND PRODUCED BY SHS METHOD

In this study, the porous samples were manufactured through self-propagating high-temperature synthesis (SHS) by adding 10 % Co and Cr to 50 % Ni – 50 % Al powders. 10 % Co and Cr added 50 % Ni – 50 % Al samples were mixed for 12 hours using a mixer with a rotational speed of 300 rpm and compacted under 100 MPa pressure. The obtained samples were then synthesized by moving them to an argon atmosphere and combusted with the aid of a tungsten electrode. The samples that were obtained after the combustion reaction were characterized in terms of their microstructure using SEM-BSE. The elemental and phase analysis were carried out using EDS and XRD, respectively. The EDS results showed that the dominant element was Ni and the presence of Co with Cr was less than that of Al. The XRD measurements suggested that the highest peak is belong to NiAl along with the lowest peaks presented by Ni3Al ve NiAl3. Cr added NiAl alloy was found to present the highest hardness value after performing hardness measurements. In addition, adding Co to NiAl intermetallic structure was also found to help increasing the hardness

Keywords:

SHS, NiAlCo NiAlCr, Microstructure, powder metallurgy,

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[1] Li, Y., Liu, Y., Geng, H., Nie, D. (2006). Synthesis and cladding of Ni3Al intermetallic on steel substrate by laser controlled reactive synthesis, Journal of Materials Processing Technology 171 405–410. [2] Wang,Y., Chen,W. (2004) .Microstructures, properties and high-temperature carburization resistances of HVOF thermal sprayed NiAl intermetallic-based alloy coatings, Surface and Coatings Technology 183 18–28. [3] Brammer, M. (2011). Improving the phase stability and oxidation resistance of β-NiAl, MSc Thesis, Iowa StateUniversity, Ames, Iowa. [4] Morsi, K. (2001). Review: reaction synthesis processing of Ni–Al intermetallic materials. Materials Science and Engineering A299 1–15. [5] Dey G. K. (2003). Physical metallurgy of nickel aluminides. Sadhana 28(1 & 2), 247–262 [6] La, P.,Bai, M., Xue, Q., Liu, W. (1999). A study of Ni3Al coating on carbon steel surface via the SHS castin groute, Surface and Coatings Technology 113 44–51. [7] Kaya M., Buğutekın A.,Orhan N. (2010)The effect of porosity on thermal conductivity of the porous NiTi SMA fabricated by SHS. Journal Of Optoelectronics And Advanced Materials. 12(8), 1250 – 1255. [8] Kovalev A.I., Barskaya R.A., Wainstein D.L. (2003). Effect of alloying on electronic structure, strength and ductility characteristics of nickel aluminide. Surface Science, 532, 35-40 [9] Bochenek K., Basista M. (2015). Advances in processing of NiAl intermetallic alloys and composites for high temperature aerospace applications. 79, 136-146 [10] Kılıç, M. (2015). Kendi ilerleyen yüksek sıcaklık sentezi ile fonksiyonel derecelendirilmiş intermetalik malzemelerin üretimi ve mikroyapılarının incelenmesi, Batman Üniversitesi Yaşam Bilimleri Dergisi; 5(2) 87-98. [11] Ulu, R. 2013. Alaşım elementlerinin nial alaşımlarının mikroyapı ve mekanik özelliklerine etkisi. Yüksek Lisans Tezi, Karabük Üniversitesi Fen Bilimleri Enstitüsü, Karabük. [12] Kılıç, M. (2014). NiTi ve Ni3Al fonksiyonel derecelendirilmiş malzemesinin reaksiyon sentezlemesi yöntemiyle üretilmesinin araştırılması. Doktora Tezi. Fırat Üniversitesi Fen Bilimleri Enstitüsü, Elazığ [13] Kılıç, M., Bekten, M., Özdemir, N. (2019). SHS işlemi sonrası sinterleme işleminin intermetalik kaplamaya etkisinin incelenmesi, Fırat Üniversitesi Müh. Bil. Dergisi 31(1), 167-176. [14] Tosun G., Özler L., Kaya M., Orhan N. (2008). SHS yöntemi ile üretilen niti alaşımlarının gözenek oranının incelenmesi. 5th IPMC. Ankara [15] Chen, L., Han, Y., (2002) . The microstructure and compressive properties in NiAl(Co) alloys by HPXD technique”, Materials Science and Engineering A329–331. 725–728. [16] Kiyotakai, M., Khan T. İ., Ohmi T., Kudoh, M. (2001), Reactive casting of B2 Ni-Al-Co ternary intermetallic alloys, Materials Transactions. 42(2), 263 – 268. [17] Cotton J.D. 1991. The ınfluence of chromium on structure and mechanical properties of b2 nickel aluminide alloys. PhD Thesis ,University of Florida. [18] Cao, Y., Zhu, P., Zhu, J., Liu, Y. (2016).First-principles study of NiAl alloyed with Co, Computational Materials Science. 111 34–40 [19] Ozdemir O., Zeytin S.,Bindal C. (2010). Characterization of NiAl with cobalt produced by combustion synthesis. Journal of Alloys and Compounds. 508, 216-221.

ISSN: 2536-5010
Yayın Aralığı: Yılda 2 Sayı
Yayıncı: INESEG Yayıncılık A.Ş.

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