Development of New Generation Turbine Disk Superalloys in the HTM21 Project


Article Preview

A new kind of cast & wrought (C&W) Ni-Co base superalloys named as “TMW alloys” was developed recently for compressor and turbine disk of gas turbine engines in the High Temperature Materials 21 Project at the National Institute for Materials Science (NIMS) in Japan. These Ni-Co base superalloys combine the characters of two kinds of γ- γ’ two-phase alloys (Ni-base and Co-base superalloys) and can be fabricated by cheap cast and wrought processing route. The results showed that some of these TMW alloys have superior tensile strength at temperatures up to 750 °C and higher creep resistances up to 725 °C than commercial UDIMET 720 LI alloy.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




Y. F. Gu et al., "Development of New Generation Turbine Disk Superalloys in the HTM21 Project", Materials Science Forum, Vols. 546-549, pp. 1277-1280, 2007

Online since:

May 2007




[1] C. T. Sims and W. C. Hagel, Ed., The Superalloys (Wiely, Canada, 1972).

[2] E. F. Bradley, Ed., Superalloys: A Technical Guide, 1 st ed. (ASM International, 1988).

[3] M. J. Donachie and S. J. Donachie, Superalloys: A Technical Guide, (ASM International, 1999).

[4] K. P. Rohrbach: Adv. Mater. Process., Vol. 148, No. 10 (1995), pp.37-40.

[5] D. Furrer and H. Fecht: JOM., Vol. 51, No. 1 (1999), pp.14-17.

[6] C. T. Sims, N. S. Stoloff and W. C. Hagel, Ed., Superalloys II: High-Temperature Materials for Aerospace and Industrial Power (Wiely, Canada, 1987).

[7] P. R. Bhowal, E. F. Wright and E. L. Raymond: Metall. Trans. A, Vol. 21A (1990), pp.1709-1717.

[8] H. Harada, et al.: High Temperature Alloys for Gas Turbines 1982, (1982).

[9] H. Harada, et al.: High Temperature Alloys for Gas Turbines 1990, (1990), p.1319.

[10] H. Harada: IGTC2003Tokyo, (2003) KS2.

[11] W. D. Chao and R. kennedy: Superalloys 2004, (2004), pp.91-99.

[12] J. R. Groh and D. P. Mourr: Superalloys 2004, (2004), pp.101-108.

[13] T. P. Gabb, J. Telesman, P. T. Kantzos and K. O'Connor: NASA/TM-2002-211796, NASA, Glenn Research Center, Hanover, USA, (2002).

[14] R. N. Jarrett and J. K. Tien: Met. Trans. A., Vol. 13A (1982), pp.1021-1032.

[15] P. Willemin and M. Durand-Charre: J. Mater. Sci., Vol. 25 (1990), pp.168-174. 0 50 100 150 200 0. 0 0. 1 0. 2 0. 3 0. 4 TMW-3 725 0 C/630 MPa TMW-4 Creep Strain, % Time, hours TMW-1 (U720Li) TMW-2 Fig. 6. Tensile creep curves at 725 °C/630 MPa.