© 2013 Siemens Energy, Inc. All rights reserved. Acknowledgement The authors gratefully acknowledge Siemens Energy, Inc. for the support in completing this research; meanwhile, the financial support from National Natural Science Foundation of China (Grant NOs. 10872105 and 51071094) are also appreciated. Permission for Use: The content of this paper is copyrighted by Siemens Energy, Inc. and is licensed to CSTAM for publication and distribution only. Any inquiries regarding permission to use the content of this paper, in whole or in part, for any purpose must be addressed to Siemens Energy, Inc. directly. Reference [1] R. B., Scralin. "Fatigue crack propagation in a directionally-solidified nickel-base alloy". Metallurgical Transactions A, 7A(1976) 1535-1541. [2] M. Okazaki, T. Tabata, S. Nohmi. "Intrinsic Stage I crack growth of directioinally solidified ni-base superalloys during low-cycle faitgue at elevated temperature". Metallurgical Transactions A, 21A(1990) 2201-2208. [3] B. Al-Abed, G. A. Webster. "Comparison of creep-fatigue crack growth in a conventionally cast and directionally solidified nickel base superalloy". Proceedings of the fifth international conference on creep and fracture of engineering materials and structures, B. Wilshire and R.W. Evans. Eds, The Institute of Materials, London, 1993(1993) 491-501. [4] S. Highsmith. Jr., W. S. Johnson. "Scatter in fatigue crack growth rate in a directionally solidified nickel-base superalloy". Journal of ASTM International, 1(2)(2004) 1-12. [5] K. B. Yoon, T. G. Park, A. Saxena. "Elevated temperatrue fatigue crack growth model for DS-GTD-111". Strength, Fractrue and Complexity, 4(2006) 35-40. [6] S. Highsmith. Jr., W. S. Johnson. "Elevated temperature fatigue crack growth in directionally solidified GTD-111 superalloy". Fatigue and Fracture of Engineering Materials and Structures, 29(1)(2006) 11-22. [7] Annual Book of ASTM Standards, E647, ASTM International. [8] K. S. Chan, J. E. Hack, G. R. Leverant. "Fatigue crack propagation in Ni-base superalloy single crystals under multiaxial cyclic loads". Metallurgical Transactions A, 17A(1986) 1739-1750. [9] K. S. Chan, J. E. Hack, G. R. Leverant. "Fatigue crack growth in MAR-M200 single crystals". Metallurgical Transactions A, 18a(1987) 581-591. [10] K. S. Chan, G. R. Leverant. "Elevated-temperature fatigue crack growth behavior of MAR-M200 single crystals". Metallurgical Transactions A, 18a(1987) 593-602. [11] H. Kagawa, Y. Mukai. "The effect of crystal orientation and temperatrue on fatigue crack growth of ni-based single crystal superalloy". Superalloy 2012: 12th international symposium on superalloys, 2012(2012) 225-233.
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