Effect of Alloying Element Addition on Transition Interface Reaction Zone in Metal Matrix Composite Processing by Cast Infiltration

2011 ◽  
Vol 337 ◽  
pp. 598-602
Author(s):  
Quan Shan ◽  
Zu Lai Li ◽  
Ye Hua Jiang ◽  
Rong Zhou ◽  
Yu Dong Sui

In metal matrix composite, the matrix and reinforced body is different in physical and chemical properties. The transition effect of reaction zone between the matrix and reinforced body is the hot point in research aboat metal matrix composite. The steel substrat casting tungsten carbide particle surface reinforced compostie is research object in this article. The interface reaction zone is measured by EDS line scaning. The problem is solved by statistic that interference between scaning neighbour points leads to the emergence of sawtooth wave, the processed curve is beneficial to observe. The effect and effect curve of W、Mo、Ni addion is received in the interface reaction zone.

2015 ◽  
Vol 766-767 ◽  
pp. 252-256 ◽  
Author(s):  
A. Siddique Ahmed Ghias ◽  
B. Vijaya Ramnath

The composite material is a combination of two or more materials with different physical and chemical properties. The composite has superior characteristics than those individual components. A hybrid composite is the one which contains at least three materials. When the matrix material is a metal, the composite is termed as metal matrix composites (MMC). The MMC is a composite material with two constituent parts, one being a metal. The other material may be another metal, ceramic or fiber. Among all the MMC’s, Aluminium is the most widely used matrix material due to its light weight, high strength and hardness. This paper deals with the fabrication and mechanical investigation of hybrid metal matrix composite Al - SiC. The fabrication is done by stir casting by adding the required quantities of additives into the stirred molten Aluminium. The results show significant effect of mechanical properties such as tensile strength, yield stress and flexural strength. The internal structure of the composite is observed using Scanning electron microscope (SEM) and found that are formation of pores in them.


Author(s):  
G Girish ◽  
V Anandakrishnan

In this work, an Al–Zn–Mg–Cu/TiC metal–matrix composite was fabricated through recursive friction stir processing, and its microstructure, hardness, and tribological properties were investigated. Microstructure examination revealed a homogeneous dispersion of TiC particles in the matrix after six recursive passes. The grains were significantly refined and microhardness of the composite improved due to the presence of TiC particles. Friction coefficient and wear rate of the composite went up with an increase in the applied load and dropped significantly at higher sliding velocities. The morphology of the wear specimens experimented under different testing conditions was analyzed and the corresponding wear mechanisms discussed.


Author(s):  
M. E. Goshkoderya ◽  
T. I. Bobkova ◽  
M. V. Staritsyn

The paper proposes a method for preparing composite powders of the Ti/TiB2 system, studies the properties of the obtained composite powders, and also shows a series of experiments on its microplasma spraying. The properties of the sprayed coatings were investigated. On its basis the optimal ratio of the matrix and reinforcing components was established in order to increase significantly the hardness of the sprayed coatings.


2018 ◽  
Vol 204 ◽  
pp. 05020
Author(s):  
Aminnudin Aminnudin ◽  
Moch. Agus Choiron

Metal matrix composite (MMC) is a combination of two or more materials using metal as a matrix. In this paper we used brass as the matrix and fly ash as for the particle. The fly ash used is fly ash which is produced from coal combustion in the Paiton power plant. Fly ash composition in the MMC are 5% and 10%. The MMC was produced with gas furnace. Heat tratment to MMC was done at 350 and 400 °C.Hard testing process, tensile test and impack test are carried out at MMC before heat treatment and after heat treatment. From the test results showed an increase in hardness, tensile strength and impact test showed the heat treatment process at a temperature of 350 °C. Heat treatment at a temperature of 400 °C does not improve the mechanical properties of MMC


Author(s):  
S. Mousa ◽  
M. Atta ◽  
A. A. Abd-Elhady ◽  
Ahmed Abu-Sinna ◽  
O. Bafakeeh ◽  
...  

Abstract The holy Quran, from more than 1400 years, told us that Zul-karnain had made a metallic composite material between iron and copper [1,2] as follows: “Bring me sheets of iron” — until, when he had leveled [them] between the two mountain walls, he said, “Blow [with bellows],” until when he had made it [like] fire, he said, “Bring me, that I may pour over it molten copper * So Gog and Magog were unable to pass over it, nor were they able [to effect] in it any penetration.”: Translation of verses 96 and 97 in Surah Al-Kahf (18), The holy Quran [3]. According to the above story, the matrix is copper, while reinforcement is iron of this metal matrix composite. The present paper is going to investigate the Metal-Matrix Composite Material (MMC) suggested by Zul-karnain at different manufacturing conditions by using the experimental method. The effect of reinforcement temperature on the integrity of such MMC is one of the main goals of the present work. The mechanical behavior of the present QMMC is also examined in the present research as preliminary study. Furthermore, the finite element method is used to predicate the debonding force of MMC based on Virtual-Crack-Closing-Technique (VCCT).


2004 ◽  
Vol 449-452 ◽  
pp. 301-304
Author(s):  
Woo Gwang Jung ◽  
Hoon Kwon

BN/Al(-Mg) metal matrix composite (MMC) was fabricated by the pressureless infiltration technique. The phase characterizations of the composites were analyzed using the SEM, TEM, EDS and EPMA on reaction products after the electrochemical dissolution of the matrix. It is confirmed that aluminum nitride (AlN) was formed by the reaction of Mg3N2and Al alloy melt. Plate type AlN and polyhedral type Mg(-Al) boride were formed by the reaction between Mg2N2, BN and molten Al in the composite. The reaction mechanism in the fabrication of BN/Al(-Mg)MMC was derived from the phase analysis results and the thermodynamic investigation.


Author(s):  
K. E. Madu ◽  
E. I. Nwankwo ◽  
G. O. Okoronkwo ◽  
J. I. Onyewudiala

New developments in material technology aids in the investigations, reinforcements of new materials which replaces existing materials for various applications. Among those, composite materials play an important role which is a combination of two or more materials with different physical and chemical properties. This research focused on developing an aluminium metal matrix composite (AMMC) material made by wrought aluminium alloy with various weight fractions of aluminium oxide to make five different forms of composites. In this research stir casting process was used. The reinforced composites were tested for their tensile and impact strength properties. The results show that composite with a higher percentage of aluminium oxide has high tensile and impact strength properties than other composites.


2013 ◽  
Vol 685 ◽  
pp. 24-29
Author(s):  
Y. Şahin ◽  
K. Emre Öksüz

Al2124-20wt.% SiCp composites were prepared by powder metallurgy (PM) method and investigated the tribological behavior of MMCs. S/N ratio analysis and analysis of variance (ANOVA) were employed to investigate which design parameters significantly affected the wear of the composites. The hardness of the matrix alloy increased from 44.2 HRB up to 87 HRB when reinforced with SiC particles. The ANOVA results showed that the hardness exerted the greatest effect on the wear, followed by the abrasive size.


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