Meso Approaches for the Creep Damage Behavior of Nickel-Base Directionally Solidified Superalloys

Yue Zhufeng; Lü Zhenzhou; Zheng Changqing

Article Contents

Article Navigation > Applied Mathematics and Mechanics > 1999 > 20(2): 175-180

Yue Zhufeng, Lü Zhenzhou, Zheng Changqing. Meso Approaches for the Creep Damage Behavior of Nickel-Base Directionally Solidified Superalloys[J]. Applied Mathematics and Mechanics, 1999, 20(2): 175-180.

Citation:

PDF( 2010 KB)

Meso Approaches for the Creep Damage Behavior of Nickel-Base Directionally Solidified Superalloys

Department of Applied Mechanics, Northwestern Polytechnical University, P O Box 350, Xi'an 710072, P R China

Received Date: 1996-10-18
Rev Recd Date: 1998-09-26
Publish Date: 1999-02-15

Abstract

Abstract

A self_consistent creep damage constitutive model and a finite element model have been developed for nickel_base directionally solidified superalloys.Grain degradation and grain boundary voiding are considered.The model parameters are determined from the creep test data of a single crystal and a directionally solidified superalloy with a special crystallographic orientation.The numerical analysis shows that the modeled creep damage behaviors of nickel_base directionally solidified superalloys with different crystallographic orientations are in good agreement with the experimental data.
- directionally solidified superalloy,
- creep meso damage,
- finite element model,
- self_consistent model

FullText(HTML)

References(8)

References

[1]	岳珠峰.各向异性晶体滑移粘塑性模型及其应用[R].中国博士后报告,西安:西北工业大学,1996
[2]	Yue Z F, Lu Z Z, Zheng C Q. Evaluation of creep damage behavior of nickel-base directionally solidified superalloys with different crystallographic orientations[J].Theoret Appl Fracture Mech,1996,25:127～138
[3]	Weng T J. A self-consistent relation for the time-dependent creep of polycrystals[J].Internat J Plasticity,1993,9(2):181～198
[4]	Ohno N, Takeuchi T. Multiaxial creep of a nickel-base directionally solidified alloy:anisotropy and simulation[J].Acta Metall Mat,1992,40(4):559～561
[5]	Yue Z F, Lu Z Z, Zheng C Q. The creep-damage constitutive and life predictive model for nickel-base single crystal superalloys[J].Metall Mater Trans A,1995,26(6):1815～1821
[6]	Robotnov Y N. Creep Problems in Structures Members[M].Amsterdam: North-Holland,1969
[7]	Ohno N, Takeuchi T. Anisotropic in multiaxial creep of nickel-base single superalloy CMSX-2 (experiments and identification of active slip systems)[J].JSME Internat J,1994,37(1):129～137
[8]	Shi Shixiang, Jordan E H. Self-consistent constitutive modeling and testing of polycrystalline hastelloy-X[J].Internat J Solids Structures,1992,29(8):2623～2638