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Small ring testing of a creep resistant material

Hyde, Christopher J.; Hyde, T.H.; Sun, Wei; Nardone, S.; De Bruycker, E.

Authors

Christopher J. Hyde

T.H. Hyde

Wei Sun

S. Nardone

E. De Bruycker

Abstract

Many components in conventional and nuclear power plant, aero-engines, chemical plant etc., operate at temperatures which are high enough for creep to occur. These include steam pipes, pipe branches, gas and steam turbine blades, etc. The manufacture of such components may also require welds to be part of them. In most cases, only nominal operating conditions (i.e. pressure, temperatures, system load, etc.) are known and hence precise life predictions for these components are not possible. Also, the proportion of life consumed will vary from position to position within a component. Hence, non-destructive techniques are adopted to assist in making decisions on whether to repair, continue operating or replace certain components. One such approach is to test a small sample removed from the component to make small creep test specimens which can be tested to give information on the remaining creep life of the component. When such a small sample cannot be removed from the operating component, e.g. in the case of small components, the component can be taken out of operation in order to make small creep test specimens, the results from which can then be used to assist with making decisions regarding similar or future components. This paper presents a small creep test specimen which can be used for the testing of particularly strong and creep resistant materials, such as nickel-based superalloys.

Journal Article Type Article
Publication Date Dec 1, 2013
Journal Materials Science and Engineering: A
Print ISSN 0921-5093
Electronic ISSN 0921-5093
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 586
Institution Citation Hyde, C. J., Hyde, T., Sun, W., Nardone, S., & De Bruycker, E. (2013). Small ring testing of a creep resistant material. Materials Science and Engineering: A, 586, doi:10.1016/j.msea.2013.07.081
DOI https://doi.org/10.1016/j.msea.2013.07.081
Keywords Small ring; Creep testing; Creep resistant material; Conversion relationships; Ni-base alloys
Publisher URL http://www.sciencedirect.com/science/article/pii/S0921509313008605
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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