Journal Published Online: 01 January 2003
Volume 31, Issue 1

Economical Creep Testing of Ultrahigh-temperature Alloys



Specially designed facilities for creep testing of ultrahigh-temperature alloys are presented. Ohmic heating is chosen for easy access to the sample, quickly attainable heating and cooling rates, and simplicity in design and operation. Strain is measured with a video extensometer by means of the software SuperCreep. SuperCreep allows fast and automated analysis of creep curves. For short but precise representations of creep curves, Bézier splines are used. Creep tests on pure Pt, Pt-10 wt% Rh, and the oxide dispersion strengthened Pt-base alloys Pt DPH and Pt-10 wt% Rh DPH between 1200 and 1600°C have proven the reliability of the equipment. Stationary creep rates follow the Norton power law. Stress exponents, activation energies, and pre-exponential factors are given for the four alloys investigated.

Author Information

Völkl, R
Friedrich-Schiller-University Jena, Jena, Germany
Freund, D
University of Applied Sciences Jena, Jena, Germany
Fischer, B
University of Applied Sciences Jena, Jena, Germany
Pages: 9
Price: $25.00
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Stock #: JTE12351J
ISSN: 0090-3973
DOI: 10.1520/JTE12351J