Effect of Ta Addition on Microstructure and Hot Oxidation Resistance of AlCrCoNiY-xTa High-Entropy Alloy Consolidated by Spark Plasma Sintering

الموضوعات : Journal of Environmental Friendly Materials

Babaei Rouchi A ¹ (Department of Materials Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran)
Salemi Golezani A ² (Department of Materials Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran)
Hadavi S. M. M ³ (Department of Materials Engineering, Tarbiat Modares University, Tehran, Iran)

تاريخ الإرسال : 01 الجمعة , صفر, 1442 تاريخ التأكيد : 18 الخميس , ربيع الثاني, 1442 تاريخ الإصدار : 16 الثلاثاء , ربيع الثاني, 1442

الکلمات المفتاحية:

ملخص المقالة :

High Entropy Alloys(HAEs) are alloys with multiple elements (typically 5 or more elements) that remain in solid solution state instead of precipitate in several phases. These alloys are multicomponent alloys having constituents in equiatomic or near equiatomic ratios (having the atomic percentage between 5% and 35%). In this paper, the effects of Ta addition on the microstructure and oxidation behavior of 4 High and Medium Entropy Alloys were investigated with the aim of understanding the relationship between phase / microstructure and oxidation resistance of AlCrCoNiY-xTa alloys. The microstructure investigations showed that the presence of Ta alloying element could lead to the formation of CrTaO4 phase. The amount of this phase increases with a higher percentage of Ta element. Also, more results show that, formation of CrTaO4 phase facilitates the formation of Al2O3 oxide phase as an outer layer and the presence of this phase can improve the oxidation properties of the investigated alloys

المصادر:

[1] B.S. Murty, J.W. Yeh, S. Ranganathan, High-Entropy Alloys, Butterworth-Heinemann, 2014

[2] C.b. LIU, Z.M. ZHANG, X.L. JIANG, M. LIU, Z.H. ZHU, Trans. Nonferrous Met. Soc. China, 19(2009), 99.

[3] C.M. Liu, H.M. Wang, S.Q. Zhang, H.B. Tang, A.L. Zhang, J. Alloys Compd., 583 (2014), 162.

[4] D.B. Miracle, O.N. Senkov, Acta Mater., 122 (2017), 448.

[5] H. Jiang, K. Han, D. Qiao, Y. Lu, Z. Cao, T. Li, Mater. Chem. Phys., 210 (2018), 43.

[6] S.M. Howard, Ellingham Diagrams. SD School of Mines and Technology, 2006

[7] J.W. Yeh, S.K. Chen, S.J. Lin, J.Y. Gan, T.S. Chin, T.T. Shun, C.H. Tsau. S.‐Y. Chang, Adv. Eng. Mater., 6 (2004), 299.

[8] K.Y. Tsai, M.H. Tsai, J.W. Yeh, Acta Mater., 61 (2013), 4887.

[9] M. Bensch, A. Sato, N. Warnken, E. Affeldt, R.C. Reed, U. Glatzel, Acta Mater., 60 (2012), 5468.

[10] M. Shibata, S. K., Mater. Trans., 47(2006), 1638.

[11] O. N. Senkov, S. V. Senkova, D. M. Dimiduk, C. Woodward, D. B. Miracle, J. Mater. Sci., 47(2012), 6522.

[12] P. Fox, G. J. Tatlock, Mater. Sci. Technol., 5(1989), 816.

[13] T. B. Reed, Free energy of formation of binary compounds. MIT Press, 1972

[14] S. Singh, N. Wanderka, B.S. Murty, U. Glatzel, J. Banhart, Acta Mater., 59(2011), 182.

[15] S.j. Park, S.M. Seo, Y.S. Yoo, H.W. Jeong, H.j. Jang, Corros. Sci., 90(2015), 305.

[16] V. Dolique, A.L. Thomann, P. Brault, Y. Tessier, P. Gillon, Mater. Chem. Phys., 117(2009), 142.

[17] W. Kai, W. L. Jang, R. T. Huang, C. C. Lee, H. H. Hsieh, C. F. Du, Oxid. Met., 63(2005), 169.

[18] W. Ren, F. Ouyang, B. Ding, Y. Zhong, J. Yu, Z. Ren, L. Zhou, J. Alloys Compd., 724(2017), 565.

[19] W.R. Wang, W.L. Wang, J.W. Yeh, Phases, J. Alloys Compd., 589(2014), 143.

[20] Y. Liu, J. Wang, Q. Fang, B. Liu, Y. Wu, S. Chen, Intermetallics, 68(2016), 16.

[21] Y. Syono, M. Kikuchi, T. Goto, K. Fukuoka, J. Solid State Chem., 50(1983), 133.

[22] Y. Zhang, S. G. MaJ. W. Qiao, Metall. Mater. Trans. A, 43(2012), 2625.

[23] Yeh, J.W, Ann. Chim., 31(2006), 633.

[24] Yeh, J.W, JOM, 65(2013), 1759.

[25] Z. Fu, W. Chen, S. Fang, D. Zhang, H. Xiao, D. Zhu, J. Alloys Compd., 553(2013), 316.