Effect of the interface layer on the mechanical behavior of TiO2 nanoparticle reinforced aluminum matrix composites

2012 ◽  
Vol 48 (1) ◽  
pp. 99-106 ◽  
Author(s):  
JH Shin ◽  
HJ Choi ◽  
MK Cho ◽  
DH Bae
Keyword(s):  
Mechanical Behavior ◽  
Aluminum Matrix ◽  
Interface Layer ◽  
Tio2 Nanoparticle ◽  
Aluminum Matrix Composites ◽  
Matrix Composites

scholarly journals Microstructure and Flexural Properties of Z-Pinned Carbon Fiber-Reinforced Aluminum Matrix Composites

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 174 ◽  
Author(s):  
Sian Wang ◽  
Yunhe Zhang ◽  
Pibo Sun ◽  
Yanhong Cui ◽  
Gaohui Wu
Keyword(s):  
Carbon Fiber ◽  
Flexural Strength ◽  
Aluminum Matrix ◽  
Interface Layer ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Fiber Waviness ◽  
Carbon Fiber Reinforced ◽  
Interlaminar Shear

Z-pinning can significantly improve the interlaminar shear properties of carbon fiber-reinforced aluminum matrix composites (Cf/Al). However, the effect of the metal z-pin on the in-plane properties of Cf/Al is unclear. This study examines the effect of the z-pin on the flexural strength and failure mechanism of Cf/Al composites with different volume contents and diameters of the z-pins. The introduction of a z-pin leads to the formation of a brittle phase at the z-pin/matrix interface and microstructural damage such as aluminum-rich pockets and carbon fiber waviness, thereby resulting in a reduction of the flexural strength. The three-point flexural test results show that the adding of a metal z-pin results in reducing the Cf/Al composites’ flexural strength by 2–25%. SEM imaging of the fracture surfaces revealed that a higher degree of interfacial reaction led to more cracks on the surface of the z-pin. This crack-susceptible interface layer between the z-pin and the matrix is likely the primary cause of the reduction of the flexural strength.

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