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Thermo-mechanical fatigue behaviour of a modern γ-TiAl alloy

✍ Scribed by Marcel Roth; Horst Biermann

Publisher: Elsevier Science
Year: 2008
Tongue: English
Weight: 324 KB
Volume: 30
Category: Article
ISSN: 0142-1123
DOI: 10.1016/j.ijfatigue.2007.01.049

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✦ Synopsis

The cyclic deformation and fatigue behaviour under thermo-mechanical load of the 3rd generation c-TiAl alloy TNB-V5 are evaluated. Strain controlled thermo-mechanical and isothermal fatigue tests were carried out with two different strain ranges, different temperature-strain cycles and different temperature ranges from 400 °C to 800 °C. Cyclic deformation curves, stress-strain hysteresis loops and fatigue lives of the tests are presented. The fatigue lives were well described by the Smith-Watson-Topper damage parameter.

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