Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 19-20, Pages 6263-6270Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.04.085
Keywords
Thermomechanical fatigue; Low cycle fatigue; Ti-6Al-4V alloy; Oxidation
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Funding
- Defence Research and Development Organization
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In this study, the overall view of in-house development of thermomechanical fatigue (TMF) test capability has been presented. Using this test facility, mechanical strain controlled in-phase (IP) and out-of-phase (OP) TMF behaviour of Ti-6Al-4V alloy has been investigated in the temperature range 100-400 degrees C with ramp heating and cooling rate of 2 degrees C/s. Isothermal low cycle fatigue (IF) tests have also been conducted at 100 degrees C and 400 degrees C for comparison with TMF data. The combined effect of development of tensile mean stresses and metallurgical degradation due to oxidation led to detrimental OP-TMF fatigue life as compared to IP-TMF and IF loading. (C) 2011 Elsevier B.V. All rights reserved.
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