Journal
PHILOSOPHICAL MAGAZINE LETTERS
Volume 90, Issue 6, Pages 413-421Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500831003745241
Keywords
fracture; nanolaminate; length scale; interfaces
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Funding
- National Natural Science Foundation of China [50971125, 50890173]
- China-Australia Special Fund for Science & Technology Cooperation [50811120106]
- National Basic Research Program of China [2010CB631003]
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Fracture behavior of Cu-Ni laminate composites has been investigated by tensile testing. It was found that as the individual layer thickness decreases from 100 to 20 nm, the resultant fracture angle of the Cu-Ni laminate changes from 72 degrees to 50 degrees. Cross-sectional observations reveal that the fracture of the Ni layers transforms from opening to shear mode as the layer thickness decreases while that of the Cu layers keeps shear mode. Competition mechanisms were proposed to understand the variation in fracture mode of the metallic laminate composites associated with length scale.
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