Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 116, Issue -, Pages 54-61Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2018.10.022
Keywords
Metal matrix composites; High temperature; Laminated structure; Strength
Funding
- Natural Science Foundation of China [51771110, 51371115, 51671130, 51771111]
- National Key R&D Program of China [2017YFB0406200]
- Shanghai Science & Technology Committee [15JC1402100, 17520712400]
- Ministry of Science & Technology of China [2016YFE0130200]
Ask authors/readers for more resources
Copper matrix composites are widely used as strong conducting materials. Mechanical properties and failure behavior at high temperatures are investigated for carbon nanotubes/copper matrix nanolaminated composites with well-balanced strength and ductility in this work. Tensile strength of the composite decreased considerably as temperature increased because of matrix softening and Cu grain coarsening. Deformation mechanism is controlled by pipe diffusion mechanism at 573 K, while lattice diffusion at 773 K. The failure behavior is shown to transform from interfacial debonding of CNT-matrix to Cu matrix failure as the temperature increases. CNTs are pulled-out on fractured surfaces at both room and high temperature, but with different morphologies. Elemental analysis and microstructural observations indicated that the interface shear strength is between the matrix strength of 75 MPa at 773 K and 320 MPa at room temperature. The results shed light on designing advanced copper matrix composites for applications at high temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available