Spray rolling of rapidly solidified Al-FeV-Si alloy

Download
index.pdf
2006
Özyurda, Halit Akın
Show full item record
207
views
100
downloads
In this study an experimental spray-rolling set-up is designed in order to produce rapidly solidified Al-Fe-V-Si flat product. Al-Fe-V-Si alloys produced by rapid solidification powder metallurgy (RSP/M) methods are mostly used in high temperature applications in aerospace and automotive industries. The RSP/M technique used is spray deposition, which is desirable because of the high cooling rates achieved, as a result fine silicide dispersoids and intermetallics are observed in the microstructure which are known to contribute to the mechanical properties i.e. high strength at elevated temperatures, thermal stability, fracture toughness, corrosion resistance. Since spray deposition is a droplet consolidation process a considerable amount of porosity is expected in the final product. In this work, spray rolling process, which consists of spray deposition and subsequent hot twin-rolling stage, is designed and developed by interpreting the results obtained from SEM, XRD, tensile, three point bending and hardness tests of the specimens formed in several design stages. Two original intermetallic phases characterized in this study are V3Si and V2Mg3Al18.
Metallurgy.
http://etd.lib.metu.edu.tr/upload/12607312/index.pdf
https://hdl.handle.net/11511/16252
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Synthesis and characterization of nickel based bulk amkorphous alloys
Arslan, Hülya; Mekhrabov, Amdulla O.; Department of Metallurgical and Materials Engineering (2004)
The aim of this study is to synthesize and characterize new bulk amorphous alloys in the Ni- based systems. Theoretical studies on the basis of semi-empirical rules and the electronic theory of alloys in pseudopotential approximation has been provided in order to predict the impurity elements that will lead to an increase in the glass forming ability of Ni-based alloy systems. Glass forming ability of ten different compositions of alloys of Ni-Nb, Ni-Fe, Ni-B, Ni-Hf and Ni-Cr was simulated by using FORTRAN ...
Aluminum Oxide and Titanium Diboride Reinforced Metal Matrix Composite and Its Mechanical Properties
Kurtoğlu, Aziz; Sevinç, Naci; Department of Metallurgical and Materials Engineering (2004)
This study is on the production and testing of an aluminum metal matrix composite. Metal Matrix Composites can be produced in several different ways. In this study, an aluminum matrix composite is produced by direct addition of the reinforcement ceramic into the liquid metal. The ceramic reinforcement for this process was a mixture of TiB2 and Al2O3 which was produced by means of a thermite reaction of reactants Al, B2O3 and TiO2 all in powder form with their respective stoichiometric amounts. This ceramic ...
Effect of TiH2 particle size on foaming of aluminium
Kubilay, Ceylan; Öztürk, Tayfur; Department of Metallurgical and Materials Engineering (2005)
A study is carried out on the production of aluminum foams via powder processing. The study deals mainly with the effect of TiH2 particle size on the process of foaming. Mainly two TiH2 particle sizes were used; namely 27,5 ?m and 8,5 ?m. Foaming experiments were carried out at temperatures between 675oC ا 840oC. The viscosity of the system is adjusted by controlled addition of Al2O3. The study shows that choice of foaming agent size is influential in the foaming process. With the use of fine foaming agent,...
Theoretical and experimental investigation of bulk glass forming ability in bulk amorphous alloy systems
Ayas, Can; Mekrabov, Amdulla O.; Department of Metallurgical and Materials Engineering (2005)
In this study molecular dynamics simulation program in NVT ensemble using Velocity Verlet integration was written in order to investigate the glass forming ability of two metallic systems. The Zn-Mg system, one of the frontiers of simple metal-metal metallic glasses and Fe-B, inquiring attention due to presence of many bulk glass forming alloy systems evolved from this binary with different alloying element additions. In addition to this, atomistic calculations on the basis of ordering were carried out for ...
Development of lead alloys for valve-regulated lead-acid (VRLA) batteries
Halıcı, Şafak; Aydınol, Mehmet Kadri; Department of Metallurgical and Materials Engineering (2010)
In this study, Mg, Sn, Cd, Bi and Sb containing, five binary, three ternary and two quaternary different alloys to be used in a Valve-Regulated Lead-Acid (VRLA) batteries have been studied in terms of their mechanical and electrochemical properties. The investigated properties are hardness, passivity, corrosion rate, hydrogen gassing and the conductivity of the passive film. All electrochemical tests were carried out in 3.75 M H2SO4 solution by using open-circuit potential, anodic polarization, polarization...
Citation Formats
H. A. Özyurda, “Spray rolling of rapidly solidified Al-FeV-Si alloy,” M.S. - Master of Science, Middle East Technical University, 2006.
METU IIS - Integrated Information Service open@metu.edu.tr