Attrition Milling of CNT and Dispersion in Mg Alloy Matrix by Friction Stirring Process

2012 ◽  
Vol 590 ◽  
pp. 56-59 ◽  
Author(s):  
B.C. Yoo ◽  
Jai Won Byeon
Keyword(s):  
Solid State ◽  
Matrix Composite ◽  
Vickers Hardness ◽  
Metal Matrix ◽  
Rotation Speed ◽  
Mg Alloy ◽  
X Ray Diffraction ◽  
Alloy Matrix ◽  
X Ray ◽  
Attrition Milling

Effect of attrition milling and subsequent ultrasonification of CNT on dispersion in ethanol was investigated. An attempt was also made to disperse the CNT in Mg alloy matrix by solid state friction stirring process for fabrication of metal matrix composite. Attrition milling was performed at a rotation speed of 700rpm for various times up to 6 hour. After 2 hours of milling, amorphous trace was observed in X-ray diffraction pattern. Attrition milling and subsequent ultrasonification enhanced dispersion of CNT in ethanol. Mg alloy matrix composite dispersed with the CNT was successfully fabricated by friction stirring process. The CNT-dispersed composite was analyzed by optical microscopy and Vickers hardness.

scholarly journals In Situ Stress Tensor Determination during Phase Transformation of a Metal Matrix Composite by High-Energy X-ray Diffraction

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1415 ◽  
Author(s):  
Guillaume Geandier ◽  
Lilian Vautrot ◽  
Benoît Denand ◽  
Sabine Denis
Keyword(s):  
Phase Transformation ◽  
Stress Tensor ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Energy ◽  
X Ray Diffraction ◽  
Synchrotron Source ◽  
X Ray

In situ high-energy X-ray diffraction using a synchrotron source performed on a steel metal matrix composite reinforced by TiC allows the evolutions of internal stresses during cooling to be followed thanks to the development of a new original experimental device (a transportable radiation furnace with controlled rotation of the specimen). Using the device on a high-energy beamline during in situ thermal treatment, we were able to extract the evolution of the stress tensor components in all phases: austenite, TiC, and even during the martensitic phase transformation of the matrix.

Mechanical Properties of Copper-TiC In Situ Metal Matrix Composite

2015 ◽  
Vol 787 ◽  
pp. 593-597 ◽  
Author(s):  
S. Harish ◽  
R. Keshavamurthy
Keyword(s):  
Diffraction Analysis ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Graphite Powder ◽  
Copper Matrix ◽  
X Ray Diffraction ◽  
X Ray ◽  
Casting Technique

Copper based TiC reinforced in-situ metal matrix composite was synthesized by melting copper, hexaflurotitanate and graphite powder in appropriate proportion at a temperature of 1100 °C using stir casting technique. Both copper matrix and copper-TiC composite were subjected to microstructure studies, x-ray diffraction analysis, hardness and tensile test. Optical micrograph shows fine and uniform distribution of TiC particles throughout the matrix. X-ray diffraction analysis confirms the formation of Titanium carbide particles. Developed composite exhibit a significant improvement in hardness and ultimate tensile strength compared with unreinforced copper.

scholarly journals Mechanical and Wear Properties of Al6063 Metal Matrix Composite Reinforced with Al2O3 Particles

2020 ◽  
Vol 8 (5) ◽  
pp. 3955-3960
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Mechanical Test ◽  
Aluminum Matrix ◽  
Weight Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Composite Systems ◽  
Aesthetic Appearance

Composite material has replaced conventional material drastically in recent years, due to its strength to weight ratio, easy forming, cost-effectiveness, good aesthetic appearance. Metal matrix composite has successfully replaced in a structural application in the field of automobile, construction, aerospace, marine, medical etc. of which aluminum matrix has widely accepted high strength to weight ratio, ease of fabrication, corrosion resistance, and high resistance to wear, etc. In this study an attempt was made to investigate the effect of alumina Al2O3 when reinforced with aluminum 6063 matrix, liquid metallurgy route (Stir Casting Technique) adopted for the preparation of composite, the reinforcement varied from 0 to 8wt% in steps of 2wt%. Mechanical, wear, fractography and X Ray diffraction studies conducted on prepared composite systems and testing done as per ASTM and ISO standard. After the test results revealed uniform distribution of reinforcement in matrix alloy, from mechanical test it was observed that as contain reinforcement is increased the mechanical properties like hardness, toughness, tensile strength have improved similar observation were made in wear test increase in containing reinforcement resulted better wear resistance, fractured tensile specimen was studied under Scanning electron microscope SEM which resulted in the mode of fracture for all composite systems and results shows the transition mode of fracture with increase in reinforcement, X-Ray Diffraction (XRD) studies were conducted to identify the presence of reinforcement on prepared specimen and results were successfully compared with JCPDS Cards.

Microstructure and Wear Behaviour of Al/TiB2 Metal Matrix Composite

2011 ◽  
Vol 227 ◽  
pp. 23-26 ◽  
Author(s):  
Abimbola Patricia Popoola ◽  
Sisa Pityana ◽  
Enoch Ogunmuyiwa
Keyword(s):  
Wear Resistance ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Wear Behaviour ◽  
X Ray Diffraction ◽  
X Ray ◽  
Resistance Tests ◽  
Scanning Electron

Al/TiB2 metal matrix composite (MMCs) was fabricated on aluminium AA1200 with the aim of improving the wear resistance property of the substrate. The characterization of the MMCs was carried out by Optical Microscopy (OM), Scanning Electron Microscopy (SEM/EDS) and X-ray Diffraction (XRD). The microhardness and wear resistance tests were achieved. Results showed that the microhardness property of the AA1200 was increased by three times the original value and the wear resistance was also significantly improved.

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