Fracture Behavior of Cu/Cu–WCP Layered Composites

Feng Yan; Rong Xin Guo; Hai Ting Xia; Hai Yu; Yu Bo Zhang

doi:10.4028/www.scientific.net/KEM.609-610.500

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 609-610Fracture Behavior of Cu/Cu–WCP Layered Composites

Fracture Behavior of Cu/Cu–WC_P Layered Composites

Abstract:

In order to understand the fracture mechanisms of Cu/CuWC_P layered composites. An in-situ experimental study was carried out to investigate the behavior of the composites under uniaxial tensile loading. The specimens were manufactured by vacuum hot-pressed sintering technique, microscopic observations displayed that the microstructure of Cu/CuWC_P layered composites distribute uniformly, and have no visible defect at interface. In situ tensile tests were performed in a scanning electron microscope (SEM) and the tensile strengths, failure modes of composites were measured. From the in situ experiments, the stages of nucleation, growth and coalescence of cracks in the vicinity of particles are well observed and understood. The results indicated that microcrack initiation happens at particle agglomeration and the matrix-particle interface because bond strength is weak,. With the density of microcracks increaseing, macrocrack formed, and finally cause failure of CuWC_P layer, however, the Cu layer is not fracture during the whole testing.

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Periodical:

Key Engineering Materials (Volumes 609-610)

Pages:

500-503

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.609-610.500

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Online since:

April 2014

Authors:

Feng Yan, Rong Xin Guo*, Hai Ting Xia, Hai Yu, Yu Bo Zhang

Keywords:

Fracture Behavior, In Situ Observation, Layered Composites

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