Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 66, Issue -, Pages 127-137Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2014.03.019
Keywords
Titanium matrix composite; Rolling contact fatigue; Reinforcement; Microstructures; Computational modelling
Funding
- Center for Surface Engineering and Tribology at Northwestern University, USA
- State Key Laboratory of Mechanical Transmission at Chongqing University, China [SKLMT-ZZICT-2012 ZD 03]
- China Scholarship Council [2011623074, 2011605076]
- Chongqing University, China
- National Science Foundation of China [51105391]
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Rolling contact fatigue (RCF) behaviors of titanium matrix composites (TiB + TiC)/Ti-6AI-4V are investigated, including the microstructural variables, the stress distribution and the RCF life. The effect of reinforcements on RCF is observed in detail. The microstructural information, especially pertaining to the reinforcements, is obtained through scanning electron microscope. The influence of reinforcements on stress distribution is studied via analyses of subsurface stress distributions based on an approximate numerical method, in which the reinforcement distributions are taken into account. The results reveal that the existence of reinforcements causes RCF life reduction due to the stress concentration in and around the reinforcements. (C) 2014 Elsevier Ltd. All rights reserved.
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