Evaluation of interfacial properties in SiC fiber reinforced titanium matrix composites using an improved finite element model

2008 ◽  
Vol 59 (12) ◽  
pp. 1684-1689 ◽  
Author(s):  
M.N. Yuan ◽  
Y.Q. Yang ◽  
H.J. Luo
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Interfacial Properties ◽  
Element Model ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Sic Fiber

Interfacial Behaviors in SiC Fiber Reinforced Titanium Matrix Composites during Thermal Exposure

2011 ◽  
Vol 295-297 ◽  
pp. 880-885 ◽  
Author(s):  
Hai Tao Qu ◽  
Xue Ping Ren ◽  
Hong Liang Hou ◽  
Bing Zhao ◽  
Shu Xia Li
Keyword(s):  
Tensile Strength ◽  
Thermal Exposure ◽  
Service Performance ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Longitudinal Tensile Strength ◽  
Effective Barrier ◽  
Sic Fiber

Interfacial behaviors of SiC fiber reinforced titanium matrix composites during thermal exposure were investigated by SEM, EDS and XRD. The effect of C coating was mainly analyzed. The results showed that C coating can be an effective barrier of the diffusion of Si element. And the C coating of SCS-6 SiC reinforced Ti6Al4V will be almost completely consumed after thermal exposure for 25 hours at 925°C. TiC will be found in the interface when the C coating exists. After C coating is completely consumed, there is Ti3SiC2 occurring besides TiC and the interfacial debonding strength is high. However, without the protection of C coating, the fibers will be consumed and their longitudinal tensile strength will be decreased, and this will affect the service performance of the composites.

Mechanical Behavior of SiC Fiber Reinforced Al Matrix Composites: A Study Based on Finite Element Method

2011 ◽  
Vol 239-242 ◽  
pp. 2785-2789
Author(s):  
Chao Sun ◽  
Min Song ◽  
Ru Juan Shen ◽  
Yong Du
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aspect Ratio ◽  
Plastic Region ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Al Matrix Composites ◽  
Al Matrix ◽  
Element Method

The effects of SiC fiber shape, aspect ratio and loading direction on the deformation behavior of SiC fiber reinforced Al matrix composites were studied by finite element method using axisymmetric unit cell model. The results showed that the addition of reinforcements will cause constraint on the plastic flow of ductile matrix, and thus result in no-uniform stress distribution. The reinforcement shape has a pronounced effect on the overall plastic deformation of the metal matrix composites. The loading condition will cause different failure mechanisms of composites. Under tensile loading, the stress-bearing ability in the plastic region is increased with the fiber aspect ratio due to the increase in the interface between the reinforcement and matrix and the decrease in the inter-particle space.

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