Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Annealing of cold rolled and swaged AZ31 magnesium alloy /
Download
index.pdf
Date
2014
Author
Tunca, Bensu
Metadata
Show full item record
Item Usage Stats
151
views
97
downloads
Cite This
Magnesium alloys are extensively used in electronics, automotive and aerospace industries due to their low densities and high specific strengths; however limited deformability of magnesium alloys at room temperature restricts the applications. Grain refinement as a result of recrystallization can be used to enhance the deformability of these alloys. In this dissertation, recrystallization behavior of cold rolled and swaged AZ31 alloy is investigated at different temperatures in the range of 100°C - 300°C. Effects of unidirectional and complex deformation modes on recrystallization behavior and microstructure development were studied. Microstructural analyses consisted of the examination of the grain structure and twinned regions by using optical and scanning electron microscopes. The volume fraction of recrystallized grains is determined by quantitative analysis methods and supported by the micro hardness measurements. X-Ray Diffraction method is used for texture analysis.
Subject Keywords
Magnesium alloys.
,
Annealing of metals.
,
Rolling (Metal-work).
,
Swaging.
URI
http://etd.lib.metu.edu.tr/upload/12618246/index.pdf
https://hdl.handle.net/11511/24252
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Investigation of mechanical property changes after MIG welding of (7XXX) series aluminum alloys
Okay, Sena; Ögel, Bilgehan; Batıgün, Caner; Department of Metallurgical and Materials Engineering (2016)
There is an increasing demand for aluminum alloys not only in aerospace industry but also in automotive industry due to its low density. Welding is the most effective and commonly used joining technique in those industries, therefore, aluminum welding plays an important role. 7039 aluminum alloy, is a high strength alloy and it is suitable for armor applications. Like other aluminum alloys, after MIG welding, remarkable decrease in strength is observed and therefore applications are restricted. The aim of t...
Development of high temperature creep resistant aluminium based sand cast magnesium alloys
Yalınız, Emrah; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2018)
The aim of this thesis is to develop alternative sand casting aluminum based magnesium alloys to substitute current sand castable helicopter transmission housing magnesium alloys such as ZE41A and EV31A. AZ91 magnesium alloy has also been preferred for helicopter transmission housing material. However, the lower creep resistance above 120 oC due to the presence of -(Mg17Al12) phase in the microstructure and showing varying mechanical properties in different section thicknesses limit the usage of AZ91 in th...
Development of a large area germanium on insulator platform by liquid phase epitaxy
Özyurt, Zişan İrem; Yerci, Selçuk; Department of Micro and Nanotechnology (2017)
Germanium is a group IV element compatible with CMOS (Complementary metal oxide semiconductor) fabrication technology and advantageous over silicon by having smaller band gap and higher carrier mobility, which provide infrared photodetectors and high-speed transistors respectively. In addition, by having direct band gap, strained-Ge enables fabrication of infrared lasers. Finally, thanks to lattice-matching, Ge layers on Si can also be used as virtual substrates for the growth of III-V compounds on Si. In o...
Investigation of SiCp reinforced aluminium matrix composites by shear and longitudinal ultrasonic waves
Gür, Cemil Hakan (2001-11-01)
SiC particulate reinforced aluminium matrix composites are attractive materials for automotive and aerospace applications because of their outstanding stiffness and strength as compared to the aluminium alloys, in addition to the low cost of particulate reinforcement. The aim of this study is to establish correlations between ultrasonic wave velocities and SiC content, microstructure and mechanical properties of SiC reinforced Al composites, Specimens were fabricated for various volume fraction and size com...
Effect of welding parameters on the hot cracking behavior of 7039 aluminum - zinc alloy
Akkuş, Mert; Gürbüz, Rıza; Batıgün, Caner; Department of Metallurgical and Materials Engineering (2010)
7039 aluminum alloys are widely being used in the aerospace, automotive and defense industries in which welding technique is used for their joining. The main problem encountered during the welding of 7039 aluminum alloy is hot cracking. The aim of this study is to understand the effect of welding parameters on the hot cracking behavior of 7039 aluminum alloy by using Modified Varestraint Test (MVT) with Gas Tunsgten Arc Welding (GTAW) technique. During tests, welding speed was selected as varying parameter,...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
B. Tunca, “Annealing of cold rolled and swaged AZ31 magnesium alloy /,” M.S. - Master of Science, Middle East Technical University, 2014.