High Temperature Strength of Ni-Al-Cr Based Alloys Containing Refractory Elements for Advanced Die Materials


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Microstructures and mechanical properties of Ni3Al based intermetallic alloys produced by vacuum arc melting and vacuum induction melting were investigated in terms of phase analysis using scanning electron microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), X-ray diffractometer and tensile test machine. The duplex microstructural feature consisting of γ’ matrix phase and small intermetallic dispersoids was observed to be distributed over the whole microstructure in the Zr and/or Mo-added samples. From the SEM-EDS analysis of the alloys, it is clearly confirmed that the Mo is solved both into γ’ matrix phase and intermetallic phase while Zr has a role to form an intermetallic Ni5Zr phase for the entire alloys investigated. The ultimate tensile strength of the present alloy was superior to iron-based and Ni-based die materials especially in the high temperature region. The mechanical results obtained will be discussed in correlation with microstructural observations, phase analyses.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




W. Y. Kim "High Temperature Strength of Ni-Al-Cr Based Alloys Containing Refractory Elements for Advanced Die Materials", Materials Science Forum, Vols. 539-543, pp. 1589-1594, 2007

Online since:

March 2007





[1] F. E. Pickering: A Decade of Progress in Turbomachinery Design and Development (SAE International 1985) Paper 851989.

[2] T. E. Strangman: Superalloys (AIME, USA 1984) p.795.

[3] M. Gell, D. N. Dhul, and A. F. Giamei: Superalloys (ASM, USA 1980) p.205.

[4] S. Lie, and C. Di pietro: IEEE Trans. Energy Conservation, Vol. 10 (1995), pp.419-424.

[5] M. Poloujadoff, J. C. Mippo and M. Nurdin: IEEE Trans. Energy Conservation, Vol. 10 (1995) pp.415-418.

[6] D. T. Peters and J. G. Cowie: The Copper Motor Rotor and Plastic Injection Molds - New Developments Relying on Copper's Conductivity (TMS, USA 1999) pp.313-325.

[7] D. T. Peters, J. G. Cowie, E. F. Brush Jr. and S. P. Midson: Use of High Temperature Die Materials and Hot Dies for High Pressure Die Casting Pure Copper and Copper Alloys (Proceedings of the North American Die Casting Association Die Casting Congress, Rosemont, USA 2002).

DOI: 10.1016/b978-0-408-10717-4.50029-8

[8] DOE/CS-0147, Classification and Evaluation of Electric Motors and Pumps (U.S. Department of Energy, USA 1980).

[9] E.A. Herman, J.F. Wallace and A.A. Machonis: Copper Alloy Pressure Die Casting (International Copper Research Association, USA 1975) p.52.

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