scholarly journals Influence of Pulse-Impact on Microstructure of Welded Joints at Various Temperatures in Liquid-Phase-Pulse-Impact Diffusion Welding Particle Reinforcement Aluminum Matrix Composites

10.5772/35501 ◽  
2012 ◽  
Author(s):  
Kelvii Wei
Keyword(s):  
Liquid Phase ◽  
Welded Joints ◽  
Aluminum Matrix ◽  
Diffusion Welding ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Particle Reinforcement

Effect of Liquid-Phase-Impact Diffusion Welding Parameters on the Strength of Welded Joints of Aluminum Matrix Composite SiCp/ZL101

2005 ◽  
Vol 297-300 ◽  
pp. 2790-2794
Author(s):  
Ji Tai Niu ◽  
Wei Guo ◽  
Jin Fan Zhai ◽  
Mu Zhen Wang
Keyword(s):  
Liquid Phase ◽  
Matrix Composite ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Diffusion Welding ◽  
Welding Parameters ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
National Patent ◽  
Matrix Reinforcement

In this paper, a new method for welding aluminum matrix composites is mainly described. It is liquid-phase-impact (LPI) diffusion welding, which has gained China National Patent. The results show that by liquid-phase-impact diffusion welding, when the certain amount of liquid phase alloy appears, with effect of certain impact speed, the interface of matrix-reinforcement and reinforcement-reinforcement are joined perfectly. Because the welding time is very short, the harmful phase is avoided in welded area and bad effect on the interface between the aluminum matrix and reinforcement hasn’t caused, and the work efficiency has improved enormously. With the technique, particle reinforcement aluminum matrix composite SiCp/ZL101 has welded successfully, and joint strength is about 75% of the strength of composite (as-casted), deformation less than 3%.

Microstructure and Properties of In Situ Fabricated Al-5wt.%Si-Al2O3 Composites

2012 ◽  
Vol 567 ◽  
pp. 15-20 ◽  
Author(s):  
Ling Cheng ◽  
De Gui Zhu ◽  
Ying Gao ◽  
Wei Li ◽  
Bo Wang
Keyword(s):  
Shear Strength ◽  
Liquid Phase ◽  
Solid Phase ◽  
Hold Time ◽  
Aluminum Matrix ◽  
Liquid Phase Sintering ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
X Ray

Alumina reinforced aluminum matrix composites (Al-5wt.%Si-Al2O3) fabricated by powder metallurgy through hot isotactic pressing were sintered in different processes, i.e. solid and liquid phase sintering. Optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscope (SEM), Energy Dispersive X-ray (EDX) techniques were used to characterize the sintered composites. The effects of solid phase and liquid phase sintering on density, microstructure, microhardness, compression and shear strength were investigated. It was found that in situ chemical reaction was completed in solid phase sintering, but the composites had lower microhardness, comprehension and shear strength due to low density and segregation of alumina and Si particles in microstructure. Segregation of reinforcement particles in solid phase sintering resulted from character of solid reaction and Si diffusion at high temperature over a long hold time.

Welding of Aluminum Matrix Composites

2013 ◽  
Vol 762 ◽  
pp. 476-482
Author(s):  
Ji Tai Niu ◽  
Zeng Gao ◽  
Dong Feng Cheng ◽  
Xi Tao Wang ◽  
Si Jie Chen
Keyword(s):  
Metal Matrix ◽  
Research Team ◽  
Aluminum Matrix ◽  
Diffusion Welding ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Vacuum Brazing ◽  
The Poor ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

Aluminum metal matrix composites (Al-MMCs) are new promising materials for aviation, aerospace and automotive industries. However, due to the poor weldability they have very limited applications. In this paper, the authors present the welding achievements of Al-MMCs developed by their scientific research team in recent years. Laser welding, liquid phase impact diffusion welding and vacuum brazing were utilized. Based on analysis of microstructure, good joints can be achieved by using these welding methods.

Mechanical properties of Al-Cu/B4C and Al-Mg/B4C metal matrix composites

2021 ◽  
Vol 63 (4) ◽  
pp. 350-355
Author(s):  
Mehmet Ayvaz ◽  
Hakan Cetinel
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Liquid Phase ◽  
Oxide Layer ◽  
Solid Phase ◽  
Aluminum Matrix ◽  
Liquid Phase Sintering ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites

Abstract To be able to successfully produce ceramic-reinforced aluminum matrix composites by using the powder metallurgy method, the wetting of ceramic reinforcements should be increased. In addition, the negative effects of the oxide layer of the aluminum matrix on sinterability should be minimized. In order to break the oxide layer, the deoxidation property of Mg can be used. Furthermore, by creating a liquid phase, both wettability and sinterability can be improved. In this study, the effects of Mg and Cu alloy elements and sintering phase on the wettability, sinterability, and mechanical properties of Al/B4C composites were investigated. For this purpose, various amounts (5, 10, 20, and 30 wt.-%) of B4C reinforced Al5Cu and Al5Mg matrix composites were produced by the powder metallurgy method. After pressing under 400 MPa pressure, composite samples were sintered for 4 hours. The sintering was carried out in two different groups as solid phase sintering at 560 °C and liquid phase sintering at 610 °C. Despite the deoxidation effect of Mg in Al5Mg matrix composites, higher mechanical properties were determined in Al5Cu composites which were sintered in liquid phase because wettability increased. The highest mechanical properties were obtained in the 20 wt.-% B4C reinforced Al5Cu sample sintered in liquid phase.

scholarly journals Synergetic Effect of Discontinuous Carbon Fibers and Graphite Flakes on Thermo-Mechanical Properties of Aluminum Matrix Composites Fabricated by Solid–Liquid Phase Sintering

2019 ◽  
Vol 26 (2) ◽  
pp. 155-167 ◽  
Author(s):  
Nabil Chamroune ◽  
Florence Delange ◽  
Nathalie Caillault ◽  
Fabrice Morvan ◽  
Yongfeng Lu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Liquid Phase ◽  
Carbon Fibers ◽  
Synergetic Effect ◽  
Aluminum Matrix ◽  
Liquid Phase Sintering ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Solid Liquid
Sign in / Sign up

Export Citation Format

Share Document