Interface Behavior in Liquid Phase Impact Diffusion Welding of Aluminum Matrix Composite

2005 ◽  
Vol 502 ◽  
pp. 449-454 ◽  
Author(s):  
Ji Tai Niu ◽  
Wei Guo ◽  
Jin Fan Zhai ◽  
Jie Yu ◽  
Bao You Zhang
Keyword(s):  
Liquid Phase ◽  
Matrix Composite ◽  
Welded Joint ◽  
Aluminum Matrix ◽  
Interface State ◽  
Aluminum Matrix Composite ◽  
Diffusion Welding ◽  
Interface Behavior ◽  
Brittle Phase ◽  
Sic Particle

In this paper, the interface behavior in Liquid Phase Impact Diffusion Welding (LPIDW) of Aluminum Matrix Composite has been studied. Results show that by LPI diffusion welding, the interface state between reinforcement (SiC particle) and matrix is prominent, the harmful microstructure or brittle phase can be restrained from the welded joint. Moreover, dislocation density in both matrix and interface are higher than that of parent composite, the dislocation entwists each other intensively resulted in welding the composite successfully.

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%.

Study of Transient Liquid-Phase Bonding of SiC Particle Reinforced Aluminum Matrix Composite

2013 ◽  
Vol 631-632 ◽  
pp. 44-49
Author(s):  
Yao Chu ◽  
Shi Hang Jiang ◽  
Wei Jian Fan ◽  
Zhao Yang Jin ◽  
Du Xiong Wang
Keyword(s):  
Shear Strength ◽  
Liquid Phase ◽  
Matrix Composite ◽  
Transient Liquid Phase ◽  
Aluminum Matrix ◽  
Base Material ◽  
Aluminum Matrix Composite ◽  
Bonded Joints ◽  
Cu Film ◽  
Sic Particle

Transient liquid-phase(TLP) bonding of SiC particle reinforced aluminum matrix composite(SiCp/Al MMCs) ,using Cu film, Cu foil, Ni foil and Cu/Ni/Cu multilayer foil interlayer, was investigated. The effect of surface status, interlayer species and bolding time on bonding microstructure and properties were also estimated by metallographic microscope, scanning electron microscopy (SEM), X ray diffraction and tensile testing machine. The results show that adding holding time can improve shear strength of joint. Better strength of joint can be obtained due to without the effect of oxide with Cu film as interlayer, when bonding at 853K for 120min under 2MPa pressure, the shear strength of bonded joints can obtain 169.1MPa, about 81.7 percentage of the strength of base material. Best strength of joint can be obtained with Cu/Ni/Cu multilayer foil as interlayer, when bonding at 923K for 120min under 2MPa pressure, the of bonded joints can obtain 189.6MPa, about 84.6 percentage of the strength of base material.

Study of the net shape diffusion welding mechanism of aluminum matrix composite SiCw/6061Al

2003 ◽  
Vol 10 (6) ◽  
pp. 505-513 ◽  
Author(s):  
Liming Liu ◽  
Guoli Liang ◽  
Zhao Jie ◽  
Yugang Miao
Keyword(s):  
Matrix Composite ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Diffusion Welding

Influence of Hot Extrusion on Microstructure and Hardness of SiC Particle Reinforced Al-Zn-Mg-Cu Alloy Matrix Composite

2015 ◽  
Vol 816 ◽  
pp. 118-125 ◽  
Author(s):  
Xiao Hong Wang ◽  
Jun Guo ◽  
Liang Luo ◽  
Min Ye ◽  
Yuan Hua Lin ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Aluminum Matrix ◽  
Hot Extrusion ◽  
Aluminum Matrix Composite ◽  
Alloy Matrix ◽  
Homogenization Treatment ◽  
Cu Alloy ◽  
Particle Sizer ◽  
Microstructure And Mechanical Property ◽  
Sic Particle

In this paper, the microstructure and mechanical property of the Al-Zn-Mg-Cu aluminum matrix composite reinforced by SiC particles with the contents of 2.5, 4.5, and 6.5wt% through vacuum casting are studied. The homogenization treatment was conducted at 465°C heat insulation for 24h. The purpose of this study is to analyze hot extrusion influence on the microstructure and hardness of the Al-Zn-Mg-Cu aluminum matrix composite. SiCp under pre-processing possesses good wetability with the analysis of Laser Particle Sizer and XRD. Metallurgical microscope, XRD, SEM and EDS is applied to analyze the microstructure of the Al-Zn-Mg-Cu aluminum matrix composite. It has proved that the hot extrusion can effectively improve the homogenization of SiCp and dissolve the second rough phases to reinforce the dispersal of CuAl2and MgZn2phase. The hardness of Al/SiCp composite rises as the increase of the SiCp content. It is shown that when the SiCp content is above 5%, its hardness obviously reinforced as well as that of the Al/SiCp composite.

Interface Microstructure and Mechanical Properties of SiCp/2014Al Aluminum Matrix Composite Vacuum Brazing Joint

2012 ◽  
Vol 152-154 ◽  
pp. 156-161 ◽  
Author(s):  
Tao Feng ◽  
Yong Ang Zhang ◽  
Zhen Qi Yu ◽  
Yin Zhen Wang
Keyword(s):  
Matrix Composite ◽  
Vapor Deposition ◽  
Filler Metal ◽  
Welded Joint ◽  
Aluminum Matrix ◽  
Deposition Process ◽  
Aluminum Matrix Composite ◽  
Interface Microstructure ◽  
Vacuum Brazing ◽  
Loss Of Strength

This paper describes the brazing technique of SiCp/2014Al aluminum matrix composite. The surface reinforcements were partly exposed and the surface was deposited by vapor deposition process. Observing the microstructure of the brazing joint, Cu and M6 aluminum filler metal are more adaptable for the brazing process than Ti and 4047 aluminum filler metal. The tensile strength of the as-welded joint can reach 181MPa. The fractography of the brazing joint indicates that the fill metal can not wet the parent composite, which is the main reason for the loss of strength. Furthermore, the porosity caused by high brazing temperature and the aggregated reinforcement on the parent composite are two other important reasons for the brazing joint strength lost.

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