Fatigue crack growth behavior of a Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass-forming alloy |
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| Authors: | SL Philo J Heinrich I Gallino R Busch JJ Kruzic |
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| Affiliation: | 1. Materials Science, School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvallis, OR 97331, USA;2. Universität des Saarlandes, Lehrstuhl für Metallische Werkstoffe, 66041 Saarbrücken, Germany;1. Institute for Nuclear and Physical Engineering, Slovak University of Technology, Ilkovi?ova 3, 81219 Bratislava, Slovakia;2. European Commission, Joint Research Centre - Institute for Energy, PO Box 2, 1755 ZG Petten, The Netherlands;1. Département des Sciences de la Matière, Faculté des Sciences, Université 20 Août 1955-Skikda, Algeria;2. Laboratoire de Magnétisme et de Spectroscopie des Solides LM2S, Département de Physique, Faculté des Sciences, Université Badji-Mokhtar Annaba, B.P 12, 23000 Annaba, Algeria;3. Institut FIMTO ST, UMR6174 CNRS, UTBM, Site de Sévanans, F-90010 Belfort Cedex, France;4. Dep. De Fisica, Universitat de Girona, Campus de Montitlivi, Girona 17071, Spain;1. Department of Materials Science and Engineering, University of North Texas, Denton, TX, 76201, USA;2. Mechanical Engineering Department, Cleveland State University, Cleveland, OH, 44115, USA;3. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore, Singapore;4. FCA/UNICAMP, CEP 13484-350, Limeira, SP, Brazil |
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| Abstract: | Fatigue crack growth behavior was studied for a Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass in ambient air, demonstrating a fatigue threshold of ΔKTH = 1.4 MPa√m and a Paris law exponent of 1.7. A nearly stress intensity-independent crack growth regime occurred at 2.5 × 10?8 m cycle–1, suggesting an environmental influence of ambient air on the fatigue crack growth, as has been observed for Zr–Ti–Ni–Cu–Be bulk metallic glasses. However, this environmental fatigue effect was shifted to 25× higher growth rates due to the different chemistry. |
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