Failure Mechanism of Pure Nickel (Ni 200/201) under Thermo-Mechanical Loading

Hubert  Koeberl; Gerhard Winter; Martin Riedler; Wilfried Eichlseder

doi:10.4028/www.scientific.net/KEM.348-349.793

Paper Titles

An Experimental Study on the Performance Evaluation of RC Beams to Calculate the Partial Reduction Coefficient of High Strength Glass Fiber Transparent Composite Panels
p.777

Stiffness Reduction for Flat Plate Systems due to Cracking
p.781

Investigation into Damage of Aluminum Gas-Filled Pressure Vessels under Hypervelocity Impact
p.785

Experimental Study on K-Dominance of Static Crack Tip in Functionally Gradient Materials
p.789

Failure Mechanism of Pure Nickel (Ni 200/201) under Thermo-Mechanical Loading
p.793

A Modified Technique for FEM Stress Analysis in Practical Problem
p.797

Onset of Microplasticity in Copper Crystal during Nanoindentation
p.801

Fracture Analysis on the Invasion Problem of the Porous Material
p.805

Modelling of Effect of ASR on Concrete Microstructure
p.809

HomeKey Engineering MaterialsKey Engineering Materials Vols. 348-349Failure Mechanism of Pure Nickel (Ni 200/201)...

Failure Mechanism of Pure Nickel (Ni 200/201) under Thermo-Mechanical Loading

Abstract:

Cyclic loading of metallic engineering components at constant elevated or fluctuating temperature causes a complex evolution of damage which be can hardly be described in a unique and straightforward manner. Often the thermal behaviour of the base metals is to weak, so thermal barrier coatings were needed. Nickel is generally used for such thermal barrier coatings. Therefore it is necessary to study the thermo-mechanical fatigue (TMF) of this material. The lifetime of these coatings is very strong affected by the temperature loading in general, both described by nodal temperatures and their local gradient. The thermal cyclic loading takes place as thermo-mechanical and low cycle fatigue (LCF) damage regime. To classify the thermo-mechanical failure mechanism of pure nickel, OP (out of phase) and IP-TMF (in phase) test series were examined. The use of damage parameters like the unified energy approach make sense, a more detailed life time calculation for pure Nickel can be done by using the Neu-Sehitoglu model. Summary, thermomechanical loadings activate multiple damage mechanism. Surface embrittlement by oxidation is the major distinctive mechanism in addition to pure fatigue damage. Different lifetime approaches were tested and analysed to fulfil the requirements for the fatigue analysis of nickel made components.

You might also be interested in these eBooks

Advances in Fracture and Damage Mechanics VI

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

793-796

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.793

Citation:

Cite this paper

Online since:

September 2007

Authors:

Hubert Koeberl, Gerhard Winter, Martin Riedler, Wilfried Eichlseder

Keywords:

Damage Parameters, Low Cycle Fatigue, Nickel Ni, Thermo-Mechanical Fatigue (TMF)

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] H. R. Shercliff, M.F. Ashby: Process Model for Age Hardening of Aluminium Alloys - I. The Model; Acta metall. Mater. Vol. 38, No. 10, 1789-1802, (1990).

DOI: 10.1016/0956-7151(90)90291-n

Google Scholar

[2] H. R. Shercliff, M.F. Ashby: Process Model for Age Hardening of Aluminium Alloys - II. Applications of the Model; Acta metall. Mater. Vol. 38, No. 10, 1803-1812, (1990).

DOI: 10.1016/0956-7151(90)90292-o

Google Scholar

[3] S.S. Manson.: Behaviour of materials under conditions of thermal stress. NACA Report No. 1170, (1954).

Google Scholar

[4] L.F. Coffin: A study of the effects of cyclic thermal stresses on a ductile metal. Trans. ASME 1953; A76: 931-950.

Google Scholar

[5] M.P. Miller, D.L. McDowell, R.L.T. Oehmke, S.D. Antolovich: A life prediction model for thermomechanical fatigue based on microcrack propagation. Thermo-Mechanical Fatigue Behaviour of Materials: Proceedings of the ASTM STP 1186. Sehitoglu H, editor. Philadelphia, 1993, pp.35-49.

DOI: 10.1520/stp24248s

Google Scholar

[6] R.W. Neu, H. Sehitoglu: Thermo-mechanical fatigue, oxidation and creep, part II: life prediction. Met Trans 1989; 20A: 1769-1783.

DOI: 10.1007/bf02663208

Google Scholar