Preparation and mechanical properties of in-situ synthesized nano-MgAl2O4 particles and MgxAl(1-x)B2 whiskers co-reinforced Al matrix composites

2018 ◽  
Vol 735 ◽  
pp. 236-242 ◽  
Author(s):  
Fucheng Wang ◽  
Jiajun Li ◽  
Chunsheng Shi ◽  
Naiqin Zhao ◽  
Enzuo Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Al Matrix Composites ◽  
Al Matrix

Synthesis, microstructure, and mechanical properties of in situ TiB2/Al-4.5Cu composites

2018 ◽  
Vol 25 (3) ◽  
pp. 453-462 ◽  
Author(s):  
Hongying Li ◽  
Shouxin Zhao ◽  
Yangxun Ou ◽  
Yongqiu Lai
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Yield Strength ◽  
Particle Distribution ◽  
Matrix Composites ◽  
Strengthening Mechanisms ◽  
Microstructure And Mechanical Properties ◽  
Al Matrix Composites ◽  
Al Matrix

Abstract In situ TiB2/Al-4.5Cu composites with different TiB2 particle amounts were fabricated by the salt-metal reaction technique. The effects of in situ TiB2 on the microstructure and mechanical properties of Al-4.5Cu alloy were studied in this paper. The results showed that in situ TiB2 particles had significant effect on refining grain size and improving mechanical properties of as-cast Al-4.5Cu alloy. With the amounts of TiB2 particles increasing, the yield strength and ultimate tensile strength were improved, while the elongation reduced. The strengthening mechanisms of the in situ particle-reinforcing Al matrix composites were discussed, and the yield strength was predicted accurately by accounting for the three strengthening mechanisms and particle distribution.

Investigation of Ni3Al-matrix composites strengthened by TiC

1993 ◽  
Vol 8 (11) ◽  
pp. 2830-2834 ◽  
Author(s):  
Bingchu Mei ◽  
Runzhang Yuan ◽  
Xinlong Duan
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
High Temperature ◽  
Bending Strength ◽  
Melting Process ◽  
Matrix Composites ◽  
High Temperature Synthesis ◽  
Al Matrix Composites ◽  
Al Matrix

In this paper, the possibilities of preparing TiC-reinforced Ni3Al-matrix composites by SM (self-propagating high temperature synthesis and melting process) were examined. Two kinds of composites, namely, commercial TiC-reinforcement and synthesized TiC-reinforcement Ni3Al-matrix composites, were fabricated. The effects of particle size of the commercial TiC on the mechanical properties of the Ni3Al-matrix composites were studied. The results show that the mechanical properties of the composites decrease with increasing particle size of the commercial TiC. The microstructures of 35 wt. % TiC + 65 wt. % Ni3Al composites produced by SM technology from the four elements Ti, C, Ni, and Al were examined. The results show that in these composites, the particle size of TiC synthesized in situ is fine and that the materials have considerable high-temperature bending strength and fracture toughness.

Effects of β-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites

Wear ◽  
2019 ◽  
Vol 430-431 ◽  
pp. 145-156 ◽  
Author(s):  
Chenxu Zhang ◽  
Dongxu Yao ◽  
Jinwei Yin ◽  
Kaihui Zuo ◽  
Yongfeng Xia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Tribological Behaviors ◽  
Al Matrix Composites ◽  
Al Matrix

scholarly journals Utilization of SiC and Cu Particles to Enhance Thermal and Mechanical Properties of Al Matrix Composites

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2770 ◽  
Author(s):  
Dongxu Wu ◽  
Congliang Huang ◽  
Yukai Wang ◽  
Yi An ◽  
Chuwen Guo
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
High Thermal Conductivity ◽  
Low Density ◽  
Matrix Composites ◽  
Thermal And Mechanical Properties ◽  
Cu Content ◽  
Sic Particles ◽  
Al Matrix Composites ◽  
Al Matrix

In this work, SiC and Cu particles were utilized to enhance the thermal and mechanical properties of Al matrix composites. The ball-milling and cold-compact methods were applied to prepare Al matrix composites, and the uniform distribution of SiC and Cu particles in the composite confirms the validity of our preparation method. After characterizing the thermal conductivity and the compressibility of the prepared composites, results show that small particles have a higher potential to improve compressibility than large particles, which is attributed to the size effect of elastic modulus. The addition of SiC to the Al matrix will improve the compressibility behavior of Al matrix composites, and the compressibility can be enhanced by 100% when SiC content is increased from 0 to 30%. However, the addition of SiC particles has a negative effect on thermal conductivity because of the low thermal conductivity of SiC particles. The addition of Cu particles to Al-SiC MMCs could further slightly improve the compressibility behavior of Al-SiC/Cu MMCs, while the thermal conductivity could be enhanced by about 100% when the Cu content was increased from 0 to 30%. To meet the need for low density and high thermal conductivity in applications, it is more desirable to enhance the specific thermal conductivity by enlarging the preparation pressure and/or sintering temperature. This work is expected to supply some information for preparing Al matrix composites with low density but high thermal conductivity and high compressibility.

The improved mechanical properties of Al matrix composites reinforced with oriented β-Si3N4 whisker

2019 ◽  
Vol 35 (7) ◽  
pp. 1345-1353 ◽  
Author(s):  
Chenxu Zhang ◽  
Yu-Ping Zeng ◽  
Dongxu Yao ◽  
Jinwei Yin ◽  
Kaihui Zuo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Si3n4 Whisker ◽  
Al Matrix Composites ◽  
Al Matrix
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