Synthesis of Inconel 718 Superalloy by Electric Current Activated Sintering

• Authors: N. Ergin , O. Ozdemir , S. Demirkiran , S. Sen , U. Sen
• Languages of publication: EN

Abstracts

EN

In the present study, the production of Inconel 718 nickel based superalloy was carried out in an electric current activated sintering in open air under a uniaxial pressure of 300 MPa using Al, Ni, Fe, Cr, Ti, Co, Fe-Nb and Fe-Mo powders. This alloy was heat treated, following the conventional treatment which consists of a 1 h solution treated at 980°C, followed by air cooling and double ageing, 8 h at 720°C, furnace cooling at 55°C/h down to 620°C and ageing for 8 h. Optical and SEM examinations showed a dense microstructure with low amount of porosity. XRD studies showed the existence of the γ and MC type carbide (M atom is a Nb, Ti combination) and δ phases. The relative density of sample measured according to Archimedes' principle was 93.7%, and the microhardness of sample was about 343.8 HV_{0.1}.

Keywords

EN

81.05.Bx   81.20.Ev   81.40.Cd  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1100-1102

Dates

published

2015-04

References

• [1] C. Slama, M. Abdellaoui, Journal Of Alloys And Compounds 306, 277 (2000), doi: 10.1016/S0925-8388(00)00789-1
• [2] G. Rao, M. Kumar, M. Srinivas, D.S. Sarma, Materials Science and Engineering A 355, 114 (2003), doi: 10.1016/S0921-5093(03)00079-0
• [3] G.A. Rao, M. Srinivas, D.S. Sarma, Materials Science and Engineering A 383, 201 (2004), doi: 10.1016/j.msea.2004.05.062
• [4] Y.C. Chen, Y.S. Liao, Journal of Materials Processing Technology 140, 269 (2003), doi: 10.1016/S0924-0136(03)00792-1
• [5] M.S. Kasım, C.H. Haron, J.A. Ghani, M.A. Sulaiman, M.Z.A. Yazıd, Wear 302, 1171 (2013), doi: 10.1016/j.wear.2012.12.040
• [6] A. Altıncekic, Master Thesis 'Evolution Of Precipitate Microstructure In The Superalloy In738lC During Compression Creep', Boğaziçi University, 2008
• [7] S. Grasso, Y. Sakka, G. Maizza, Sci. Technol. Adv. Mater. 10, 1 (2009), doi: 10.1007/s10853-008-3179-8
• [8] R. Orru, R. Licheri, A.M. Locci, A. Cincotti, G. Cao, Materials Science and Engineering R63, 127 (2009), doi: 10.1016/j.mser.2008.09.003
• [9] C. Wang, R. Li, Journal Of Materials Science 39, 2593 (2004), doi: 10.1023/B:JMSC.0000020036.96777.9c
• [10] W.C. Liu, M. Yao, Z.L. Chen, S.G. Wang, Journal Of Materials Science 34, 2583 (1999), doi: 10.1023/A:1004648615561

Identifiers

DOI

10.12693/APhysPolA.127.1100