Effect of short carbon fibre concentration on microstructure and mechanical properties of TiCN-based cermets

2016 ◽  
Vol 115 (4) ◽  
pp. 216-223 ◽  
Author(s):  
W. C. Sun ◽  
P. Zhang ◽  
P. Li ◽  
X. L. She ◽  
Y. J. Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Fibre Concentration ◽  
Microstructure And Mechanical Properties ◽  
Short Carbon

scholarly journals Properties of AlSi9Mg Alloy Matrix Composite Reinforced with Short Carbon Fibre after Remelting

2015 ◽  
Vol 15 (3) ◽  
pp. 39-42 ◽  
Author(s):  
M. Łągiewka ◽  
Z. Konopka
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Yield Strength ◽  
Carbon Fibre ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Alloy Matrix ◽  
Metallic Inclusions ◽  
Short Carbon

Abstract The presented work describes the results of examination of the mechanical properties of castings made either of AlSi9Mg alloy matrix composite reinforced with short carbon fibre or of the pure AlSi9Mg alloy. The tensile strength, the yield strength, Young’s modulus, and the unit elongation were examined both for initial castings and for castings made of the remelted composite or AlSi9Mg alloy. After preparing metallographic specimens, the structure of the remelted materials was assessed. A few non-metallic inclusions were observed in the structure of the remelted composite, not occurring in the initial castings. Mechanical testing revealed that all the examined properties of the initial composite material exceed those of the non-reinforced matrix. A decrease in mechanical properties was stated both for the metal matrix and for the composite after the remelting process, but this decrease was so slight that it either does not preclude them from further use or does not restrict the range of their application.

Research Progress on Mechanical Properties of Short Carbon Fibre/Epoxy Composites

2019 ◽  
Vol 12 (1) ◽  
pp. 3-13 ◽  
Author(s):  
Guanghui Zhao ◽  
Jijia Zhong ◽  
Y.X. Zhang
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Mechanical Performance ◽  
Experimental Studies ◽  
Weight Ratio ◽  
Epoxy Composites ◽  
Experimental Techniques ◽  
Research Progress ◽  
Future Research ◽  
Short Carbon

Background: Short carbon fibre reinforced epoxy composites have many advantages such as high strength-to-weight ratio, corrosion resistance, low cost, short fabrication time and easy manufacturing. Researches on the mechanical performance of the composites are mainly carried out by means of experimental techniques and numerical calculation. Objective: The study aims to report the latest progress in the studies of mechanical properties of short carbon fibre reinforced epoxy composites. Methods: Based on recently published patents and journal papers, the experimental studies of short carbon fibre reinforced epoxy composites are reviewed and the effects of short carbon fibre on the mechanical properties of the composites are discussed. Numerical studies using representative volume element in simulating macroscopic mechanical properties of the short fibre reinforced composites are also reviewed. Finally, future research of short carbon fibre reinforced epoxy composites is proposed. Results: Experimental techniques, experimental results and numerical simulating methods are discussed. Conclusion: Mechanical properties of epoxy can be improved by adding short carbon fibres. Fiber surface treatment and matrix modification are effective in enhancing interfacial adhesion between fiber and matrix, and as a result, better mechanical performance is achieved. Compared to the studies on equivalent mechanical properties of the composites, researches on the micro-mechanism of interaction between fiber and matrix are still in infancy due to the complexity of both the internal structure and reinforcing mechanism.

Effect of Mg on Microstructure and Mechanical Properties of Copper-Coated Short Carbon Fiber Reinforced Al Alloy Matrix Composite

2012 ◽  
Vol 457-458 ◽  
pp. 348-353
Author(s):  
Jian Chao Shi ◽  
Yi Han Li ◽  
Guang Chun Yao ◽  
Peng Fei Yan ◽  
Huan Liu
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Hardness Test ◽  
Al Alloy ◽  
Fiber Reinforced ◽  
Alloy Matrix ◽  
Short Carbon Fiber ◽  
Microstructure And Mechanical Properties ◽  
Carbon Fiber Reinforced ◽  
Short Carbon

Abstract: Copper coated short carbon fiber reinforced aluminum alloy matrix composites have been prepared with 0.3-1.5 wt% Mg as alloying addition by stir casting. Effect of Mg on the microstructure and mechanical properties of the composites was investigated. The microstructure was observed by scanning electron microscopy and the results show that adding Mg can make the distribution of carbon fibers uniform in the composites, reduce laminated and agglomerated. Tensile test and hardness test were carried out, the results show that the tensile strength and the hardness of the composite is increased by 13% and 8% when Mg content is 0.9 wt%.

scholarly journals Effect of Polycarbosilane Content on Microstructures and Mechanical Properties of Short-Carbon-Fibre-Reinforced SiC Composites

2006 ◽  
Vol 15 (3) ◽  
pp. 096369350601500
Author(s):  
Xiulan He ◽  
Yuguang Dai ◽  
Yinggui Guo ◽  
Yu Zhou ◽  
Dechang Jia
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Liquid Phase Sintering ◽  
Carbon Fibres ◽  
Pyrolysis Products ◽  
Precursor Polymer ◽  
Microstructures And Mechanical Properties ◽  
Sic Composites ◽  
Short Carbon

Short-carbon-fibre-reinforced SiC composites were prepared by precursor pyrolysis-hot pressing with Polycarbosilane (PCS) as precursor polymer and MgO-Al2O3-Y2O3 as sintering additives. The effects of PCS content on microstructures and mechanical properties of the composites were investigated. The results showed that, the composites could be densified at a relatively low temperature of 1800? via the liquid-phase-sintering mechanism and the highest mechanical property was obtained for the composites with 20wt. % PCS content. During sintering, Y2O3, Al2O3 reacted with the pyrolysis products from PCS and formed amorphous interphase, which was benefit of densification of the composites and avoidance of degeneration of the carbon fibres. The nano PCS-derived SiC almost lied on the surface of the particle of starting powder β-SiC, which could play a role of filling up the void and improve the relative density of the composites.

scholarly journals Mechanical and Tribological Properties of Metal Matrix Composites Reinforced with Short Carbon Fibre

2014 ◽  
Vol 59 (2) ◽  
pp. 707-711 ◽  
Author(s):  
M. Łągiewka
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Fibre ◽  
Metal Matrix Composites ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Short Carbon

Abstract The paper constitutes the culmination of the foregoing investigations concerning the influence of short carbon fibre on the enhancement of AlMg10 alloy properties. The presented work brings forward the results of examinations of mechanical and tribological properties of metal matrix composites (MMCs) based on this alloy. Composites were produced by two methods: either by gravity casting or by squeeze casting in semi-solid state of a composite suspension previously obtained through mixing of its components. The volume fraction of the reinforcing phase varied and took the value of 5, or 10, or finally 15 vol. %. Specimens cut out of the experimental castings were examined with respect both to their mechanical properties, i.e. the tensile strength and unit elongation, and to their tribological behaviour. A series of examinations of the mechanical properties proved a slight increase in tensile strength and a minor decrease in unit elongation of the examined composite materials both for gravity cast and squeeze cast specimens, as compared with the properties of pure matrix alloy. The introduction of short carbon fibre into the matrix alloy resulted also in the increased abrasive wear resistance of the examined composites in comparison to the non-reinforced matrix.

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