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Fatigue behavior of nanoscale Mo/W multilayers on flexible substrates
Published online by Cambridge University Press: 03 June 2019
Abstract
Fatigue properties of Mo/W multilayers with individual layer thickness (λ) of 5, 20, 50 and 100 nm on flexible polyimide substrates were investigated. The experimental results show that the fatigue resistance increases with decreasing λ from 100 nm to 20 nm, and reaches the maximum at λ=20 nm, and then decreases when further decreasing λ. Fatigue cracks of Mo/W multilayers with different λ were found to propagate along columnar grain boundary in the out-of-plane direction and along the boundary of cluster structures. The enhanced fatigue resistance is attributed to the larger cluster inclination angles and the more tortuous in-plane cracking paths.
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- Articles
- Information
- MRS Advances , Volume 4 , Issue 43: Characterization, Processing and Theory , 2019 , pp. 2309 - 2317
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- Copyright © Materials Research Society 2019
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