Research Papers

A Microstructure-Based Model for Creep of Gamma Prime Strengthened Nickel-Based Superalloys

[+] Author and Article Information
Ramkumar Oruganti, Adarsh Shukla, Sachin Nalawade, Sanket Sarkar, K. G. V. Sivakumar, T. Vishwanath, Sanjay Sondhi

GE Global Research,
Bangalore 560066, India

Andrew Wessman, Daniel Wei, Andrew Powell, Kenneth Bain

Cincinnati, OH 45069

Jon Schaeffer, Arthur Peck, Michael Arnett

Greenville, SC 29615

Girish Shastry

Bangalore 560066, India

Francesco Mastromatteo

Florence 50127, Italy

Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received September 12, 2017; final manuscript received May 22, 2018; published online July 5, 2018. Assoc. Editor: Antonios Kontsos.

J. Eng. Mater. Technol 141(1), 011001 (Jul 05, 2018) (5 pages) Paper No: MATS-17-1264; doi: 10.1115/1.4040554 History: Received September 12, 2017; Revised May 22, 2018

This paper outlines a microstructure-based model relating gamma prime microstructure and grain size of Ni-base alloys to their creep behavior. The ability of the model to explain creep of multiple superalloys with a single equation and parameter set is demonstrated. The only parameters that are changed from alloy to alloy are related to the gamma prime characteristics and grain size. This model also allows prediction of creep performance as a function of heat treatment and explains some apparently contradictory data from the literature.

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Dyson, B. F. , 2009, “ Microstructure Based Creep Constitutive Model for Precipitation Strengthened Alloys: Theory and Application,” Mater. Sci. Technol., 25(2), pp. 213–220.
Basoalto, H. , Sondhi, S. K. , Dyson, B. F. , and McLean, M. , 2004, “ A Generic Microstructure-Explicit Model of Creep in Nickel-Base Superalloys,” Superalloys, K. A. Green , T. M. Pollock , J. Harada , T. E. Howson , R. C. Reed , J. J. Schirra , and S. Walston , eds., TMS, Warrendale, PA, pp. 897–906.
Coakley, J. , Dye, D. , and Basoalto, H. , 2011, “ Creep and Creep Modeling of a Multimodal Nickel-Base Superalloy,” Acta Mater., 59(3), pp. 854–863.
Ma, A. , Dye, D. , and Reed, R. C. , 2008, “ A Model for the Creep Deformation Behavior of Single Crystal Superalloy CMSX-4,” Acta Mater., 56(8), pp. 1657–1670.
Zhu, Z. , Basoalto, H. , Warnken, N. , and Reed, R. C. , 2012, “ A Model for Creep Deformation of Nickel-Based Single Crystal Superalloys,” Acta Mater., 60(12), pp. 4888–4900.
Karthikeyan, S. , Unocic, R. R. , Sarosi, P. M. , Viswanathan, G. B. , and Whitis, D. D. , 2006, “ Modeling Microtwinning During Creep in Ni-Based Superalloys,” Scr. Mater., 54(6), pp. 1157–1162.
Ashby, M. F. , 1970, “ The Deformation of Plastically Non-Homogeneous Materials,” Philos. Mag., 21(170), pp. 399–424.
Brown, L. M. , and Stobbs, W. M. , 1971, “ The Work Hardening of Copper-Silica—Part I: A Model Based on Internal Stresses With No Plastic Relaxation,” Philos. Mag., 23(185), pp. 1185–1189.
Groh, S. , Devincre, B. , Kubin, L. P. , Roos, A. , Feyel, F. , and Chaboche, J.-L. , 2005, “ Size Effects in Metal Matrix Composites,” Mater. Sci. Eng., 400–401, pp. 279–282.
Pollock, T. M. , and Argon, A. , 1992, “ Creep Resistance of CMSX-3 Nickel-Base Superalloy Single Crystals,” Acta Metall., 40(1), pp. 1–30.
Oruganti, R. , 2012, “ A New Approach to Dislocation Creep,” Acta Mater., 60(4), pp. 1695–1702.
Daehn, G. S. , Brehm, H. , Lee, H. , and Lim, B. S. , 2004, “ A Model for Creep Based on Microstructural Length Scale Evolution,” Mater. Sci. Eng. A, 387–389, pp. 576–584.
Wadsworth, J. , Ruano, A. , and Sherby, D. , 1999, “ Deformation by Grain Boundary Sliding and Slip Creep Versus Diffusional Creep,” Creep Behavior of Advanced Materials for the 21st Century, Rajiv S. Mishra, Amiya K. Mukherjee, and K. Linga Murty, eds., TMS, Warrendale, PA, pp. 425–439.
Stevens, R. A. , and Flewitt, P. E. J. , 1979, “ The Effects of γ′ Precipitate Coarsening During Isothermal Aging and Creep of the Nickel-Base Superalloy IN738,” Mater. Sci. Eng., 37(3), pp. 237–247.
Dyson, B. F. , and McLean, M. , 1983, “ Particle Coarsening and Tertiary Creep,” Acta Metall., 31(1), pp. 17–27.


Grahic Jump Location
Fig. 1

(a) Experimental and predicted strain versus time for DS-GTD111 a directionally solidified Ni-base superalloy with ∼55% γ′ volume fraction. (b) Comparison of predictions from the Dyson model and the current model with experimental data on DS-GTD111.

Grahic Jump Location
Fig. 2

Predicted time-to strain versus experimental time-to-strain for four superalloys with different compositions and γ′ volume fractions. The data points include strains from 0.2% to 5%. The dashed lines indicate ±10% bounds. One model with microstructural inputs and no other change in parameters is able to predict the behavior of all the alloys (a) Rene' 65, (b) DS-GTD111, (c) GTD444, and (d) Rene' N5.

Grahic Jump Location
Fig. 3

Experimental data and predictions for DS-GTD111 with two different initial γ′ distributions. Both data converge to a common trajectory after a certain amount of time. The point of convergence shifts to lower times as temperature increases.




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