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Dissertations / Theses on the topic 'Aluminum and its alloys'

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Published: 4 June 2021

Last updated: 9 February 2022

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1

Yang, Deyu. "Rôle d'addition de magnésium sur l'occurence de la fonte naissante dans les alliages expérimentaux et commerciaux Al-Si-Cu et son influence sur la microstructure et les propriétés de traction de l'alliage = Role of magnesium addition on the occurence of incipient melting in experimental and commercial Al-Si-Cu alloys and its influence on the alloy microstructure and tensile properties /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2006. http://theses.uqac.ca.

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2

Sen, Fatih Gurcag. "Non-equilibrium Molecular Dynamics Of Electromigration In Aluminum And Its Alloys." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607654/index.pdf.

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With constant miniaturization of integrated circuits, the current densities experienced in interconnects in electronic circuits has been multiplied. Aluminum, which is widely used as an interconnect material, has fast diffusion kinetics under low temperatures. Unfortunately, the combination of high current density and fast diffusion at low temperatures causes the circuit to fail by electromigration (EM), which is the mass transport of atoms due to the momentum transfer between conducting electrons and diffusing atoms. In the present study, the effect of alloying elements in aluminum on the dif

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3

Klinter, Andreas. "Wetting behaviour of aluminum alloys on ceramic substrates and its effect on the stability of aluminum foams." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=92344.

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4

Lamb, Justin. "Decomposition and its effects on mechanical properties in Al-Zn-Mg-Cu alloys." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54931.

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The effects of variations in composition on the decomposition process in Al-Zn-Mg-Cu alloys (i.e. – 7xxx-series aluminum alloy) were studied emphasizing their effect on mechanical properties. Several experimental quaternary alloys were studied to compare their behavior with commercial 7xxx-series alloys. The investigation included studies on the effects of natural aging, artificial aging, quench sensitivity, precipitate free zone formation, and homogenization. Additionally, “true aging” curves (i.e. – hardness/strength vs. conductivity) were presented in order to visualize and quantify the

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5

Talbot, D. E. J. "Hydrogen in aluminium and its alloys." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235894.

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6

Deshpande, Nishkamraj U. "Characterization of fracture path and its relationship with microstructure and fracture toughness of aluminum alloy 7050." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20210.

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7

Oguocha, Ikechukwuka N. A. "Characterization of aluminum alloy 2618 and its composites containing alumina particles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0021/NQ37903.pdf.

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8

Abdul-Mahdi, F. S. "Tribological characteristics of coatings on aluminium and its alloys." Thesis, Brunel University, 1987. http://bura.brunel.ac.uk/handle/2438/5016.

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Hard anodising on aluminium and its alloys has been widely practised for many years in order to improve the resistance of the otherwise poor wear characteristics of aluminium. In recent years there has been an increasing interest in other treatments and coatings, on both aluminium and other base metals. The aim of this investigation is to explain the tribological performance and wear mechanism(s) of an uncoated aluminium alloy, four anodic coated alloys, and also an electroless nickel alloy. All of the coatings are produced on three different aluminium alloys. The thickness of the anodic films

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9

Duncan, Steven James. "Passivation and repassivation of aluminium and its alloys." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237673.

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10

Lavernia, Enrique J. "Development of the liquid dynamic compaction technique and its application to two high strength aluminum alloys." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/15179.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1986.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE<br>Vita.<br>Bibliography: leaves 312-335.<br>by Enrique J. Lavernia.<br>Ph.D.

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11

Dispinar, Derya. "Determination of metal quality of aluminium and its alloys." Thesis, University of Birmingham, 2006. http://etheses.bham.ac.uk//id/eprint/10/.

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Aluminium alloy castings are being used increasingly in safety-critical applications in the automotive and aerospace industries. To produce castings of sufficient quality, it is, therefore, important to understand the mechanisms of the formation of defects in aluminium melts, and important to have a reliable and simple means of detection. During the production of aluminium ingots and castings, the surface oxide on the liquid is folded in to produce crack-like defects (bifilms) that are extremely thin, but can be extremely extensive, and so constitute seriously detrimental defects. However, the

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12

Hung, Lie-chung. "Electropolishing of Ti-6A1-4V surgical implant alloy and its effect on corrosion behavior." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/20731.

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13

Moloney, Jeremy John. "Electrochemical processes on aluminium and its alloys in hydrochloric acid." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615755.

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14

Boger, Richard Keith. "Non-monotonic strain hardening and its constitutive representation." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1138979144.

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15

Swisher, Douglas Lee. "Production of ultra-fine grains and evolution of grain boundaries during severe plastic deformation of aluminum and its alloys." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA386708.

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Thesis (Degrees of Mechanical Engineer and M.S. in Materials Science and Engineering) Naval Postgraduate School, Dec. 2000.<br>Thesis advisor(s): McNelley, Terry R. "December 2000." Includes bibliographical references (p. 67-69). Also available in print.

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16

Claycomb, Gregory D. "Surface analysis applied to the development of surfaces for practical application with a focus on aluminum and its alloys /." Search for this dissertation online, 2006. http://wwwlib.umi.com/cr/ksu/main.

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17

Jin, Haiou. "The role of transition metal solutes in the deformation texture, recrystallization and grain growth in aluminum and its alloys." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ59528.pdf.

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18

Zhang, Ming. "Crystal plasticity modeling of Ti-6Al-4V and its application in cyclic and fretting fatigue analysis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22669.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: David. L. McDowell; Committee Member: Min Zhou; Committee Member: Naresh N. Thadhani; Committee Member: Rami M. Haj-Ali; Committee Member: Richard W. Neu.

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19

Koubek, David. "Analýza silového zatížení při obrábění hliníkových slitin monolitními frézami ze slinutého karbidu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241851.

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The aim of this thesis is to create the proposal and expansion of knowledge in the field of experimental measurement of force load when milling thin-walled parts made of aluminum alloy monolithic cylindrical shank cutter of cemented carbide (hereinafter referred to as CC). It also discusses the theoretical analysis of the forces generated during milling, and practical approaches to their measurement experiments. This work also deals with the analysis of aluminum and its alloys. The next chapter describes the appropriate strategy for the machining of thin-walled components including defining th

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20

Durbin, Tracie L. "Modeling Dissolution in Aluminum Alloys." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6873.

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Aluminum and its alloys are used in many aspects of modern life, from soda cans and household foil to the automobiles and aircraft in which we travel. Aluminum alloy systems are characterized by good workability that enables these alloys to be economically rolled, extruded, or forged into useful shapes. Mechanical properties such as strength are altered significantly with cold working, annealing, precipitation-hardening, and/or heat-treatments. Heat-treatable aluminum alloys contain one or more soluble constituents such as copper, lithium, magnesium, silicon and zinc that individually, or w

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21

Khajeh, Ehsan. "Permeability of hypoeutectic aluminum alloys." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/36586.

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The interdendritic permeability is a critical parameter that defines the feedability of the mushy zone during solidification. In this study, a theoretical expression to describe the evolution of permeability throughout the complete solidification range (from dendritic to dendritic/eutectic) of hypoeutectic aluminum alloys has been derived, verified and validated through physical and numerical modeling. The permeability of the primary, equiaxed, dendritic phase has been characterized using geometries obtained by X-ray microtomographic analysis of Al-4.5wt%Cu alloy samples quenched at different

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22

Fransson, Christoffer. "Accelerated aging of aluminum alloys." Thesis, Karlstad University, Karlstad University, Karlstad University, Karlstad University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-5041.

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<p>In order to determine storage life for aluminum alloys it is essential to have a good knowledge on the accelerated aging behavior and the mechanical properties that are affected. The selected aluminum alloys are AA2017, AA6082, AA7075 and the study has been focused on their impact toughness and hardness relation to aging beyond peak conditions. To be able to plot the mechanical properties versus aging time and temperature, Differential Scanning Calorimetric runs have been the key to obtain supporting activation energies for a specific transformation. The activation energies have been calcul

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23

Gammage, Justin Wilkinson D. S. "Damage in heterogeneous aluminum alloys /." *McMaster only, 2002.

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24

Pletcher, Ben A. "Kinetics of aluminum lithium alloys." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024666.

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25

Jaiboon, Oruethai Verfasser], and Siegfried R. [Akademischer Betreuer] [Horn. "Characterization of aluminium and its alloys by means of analysis of passive, pitting and galvanic behaviour in contact with CFRP by electrochemical noise and polarization methods / Oruethai Jaiboon. Betreuer: Siegfried R. Horn." Augsburg : Universität Augsburg, 2015. http://d-nb.info/1077705514/34.

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26

Jaiboon, Oruethai [Verfasser], and Siegfried R. [Akademischer Betreuer] Horn. "Characterization of aluminium and its alloys by means of analysis of passive, pitting and galvanic behaviour in contact with CFRP by electrochemical noise and polarization methods / Oruethai Jaiboon. Betreuer: Siegfried R. Horn." Augsburg : Universität Augsburg, 2015. http://d-nb.info/1077705514/34.

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27

Park, Sungbae. "Rheocasting of aluminium alloys." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670041.

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28

Harsacky, Frank J. Jr. "Processing studies of aluminum-magnesium and aluminum-copper-lithium alloys." Thesis, Monterey, California: Naval Postgraduate School, 1990. http://hdl.handle.net/10945/34850.

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Approved for public release; distribution is unlimited.<br>Investigation into the effect on superplastic behavior of two aluminum alloys produced by variations of thermomechanical processing parameters was conducted. The alloys in this study are Al-10Mg-0.1Zr (weight percent) and 2090, which is Al-2.56Cu-2.03Li-0.12Zr (weight percent). Determination of the existence of an optimum balance between deformation and recovery for the Al-10Mg-0.1Zr alloy was accomplished by extending the annealing interval to 60 minutes during warm rolling at 300 C. The optimum balance is a 30 minute annealing interv

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29

Matulich, Ryan Douglas. "Post-fire Mechanical Properties of Aluminum Alloys and Aluminum Welds." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32727.

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The focus of this research was to quantify the post-fire mechanical properties of 5083-H116 and 6082-T6 aluminum alloys. Post-fire exposure is considered heating the material to a particular temperature then cooling the material back to room temperature. The research included evaluating parent materials as well as welded samples. Post-fire mechanical properties of parent materials were evaluated at temperatures ranging from ambient to 500oC with isothermal and transient heating. Changes in material properties were evaluated through static tensile tests and hardness testing on cooled samples.

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30

Last, Howard R. "Precipitation of dispersoids in aluminum alloys." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/19895.

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31

Rofman, Oleg V. "Dynamic grain growth in aluminum alloys." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489016.

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32

ITHARAJU, RAJESWARI R. "FRICTION STIR PROCESSING OF ALUMINUM ALLOYS." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_theses/322.

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Friction stir processing (FSP) is one of the new and promising thermomechanical processing techniques that alters the microstructural and mechanical properties of the material in single pass to achieve maximum performance with low production cost in less time using a simple and inexpensive tool. Preliminary studies of different FS processed alloys report the processed zone to contain fine grained, homogeneous and equiaxed microstructure. Several studies have been conducted to optimize the process and relate various process parameters like rotational and translational speeds to resulting micros

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33

Sun, Ning. "Friction stir processing of aluminum alloys." Worcester, Mass. : Worcester Polytechnic Institute, 2009. http://www.wpi.edu/Pubs/ETD/Available/etd-050109-144331/.

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34

Sunseri, Erin Hannah. "Dendrite orientation in aluminum magnesium alloys." [Ames, Iowa : Iowa State University], 2009.

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35

Sun, Ning. "Friction Stir Processing of Aluminum Alloys." Digital WPI, 2012. https://digitalcommons.wpi.edu/etd-dissertations/552.

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Friction stir processing (FSP) has been developed based on the basic principles of friction stir welding (FSW), a solid-state joining process originally developed for aluminum alloys. What is attractive about FSP is that it can be incorporated in the overall manufacturing cycle as a post-processing step during the machining operation to provide localized modification and control of microstructures in near-surface layers of metallic components. FSP has emerged as an important post-processing technique, and has been identified as a process that may have a high impact, and perhaps is a disruptive

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36

Rivet, Frederic C. "Hydrogen embrittlement of Aluminum-Lithium alloys." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41599.

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The objective of this work is to study the effects of dissolved hydrogen on the mechanical properties of aluminum-lithium alloys: 2090, 2091, and Weldalite 049, and to compare with the effects on aluminum-copper 2219 alloy. Prior to mechanical testing, aging studies were performed for 2090 and 2219 using microhardness Vickers to determine the peak aged condition required by NASA. The Charpy tests are part of this study designed to investigate the effects of temperature and notch orientation on fracture behavior. Disk rupture tests were used with various gases (hydrogen and nitrogen) and three

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37

Gil, Rashapal Ram. "Aluminium and its alloy as substrates for the lithium rechargeable electrode." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363538.

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38

Nafisi, Shahrooz. "Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy = Effets de l'affinage des grains et de la modification sur l'évolution microstructurale de l'alliage 356 semi-solide /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2006. http://theses.uqac.ca.

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39

Conte-Matos, Augusto. "The role of alloy composition and cooling rate from the melt on the dispersoid distribution in AA 6013." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20208.

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40

Paramatmuni, Rohit K. "Solidification cracking resistance of high strength aluminum alloys." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2775.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains xi, 71 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 53-56).

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41

Wilms, Ulrich H. "Shrinkage and microstructure in zinc-aluminum alloys." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/17263.

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42

Ranganathan, Kannan. "Recrystallization resistance in aluminum alloys containing zirconium." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/19560.

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43

Jaansalu, Kevin Michael. "Composites by directed oxidation of aluminum alloys." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60591.

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The manufacture of ceramic composites has traditionally been a complex and often expensive process. A new processing method, the DIMOX$ sp{ rm TM}$ process, takes advantage of the high temperature oxidation behaviour of aluminum alloys to produce a ceramic-metal composite. Although this process is fairly simple to implement, there has not been any attempt to link the starting materials and manufacturing conditions to the properties of the final composite. This work attempts to identify some critical parameters in the manufacturing process and how they affect the end product. The reaction tempe

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44

McMahon, Michael Edward. "Grain boundary development in superplastic aluminum alloys." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA325170.

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Dissertation (Ph.D. in Mechanical Engineering) Naval Postgraduate School, December 1996.<br>Dissertation supervisor(s): T.R. McNelley. "December 1996." Includes bibliographical references (p. 195-203). Also available online.

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45

Lauer, Mark Anthony. "Modeling Macrosegregation in Directionally Solidified Aluminum Alloys." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/556855.

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This dissertation explores macrosegregation in directionally solidified aluminum castings. Two methods of interpolating thermocouple data are presented. A method using Lagrangian polynomials to interpolate thermocouple profiles is described and gives the best results for steady state furnace conditions. Using cubic splines to interpolate temperatures works best under transient conditions. A simple model, neglecting convection, is presented for predicting macrosegregation during melting, holding, and solidification of a sample and is compared with existing models. The model is able to accur

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46

Cheng, Xiang-Ming. "TEXTURE, MICROSTRUCTURE AND FORMABILITY OF ALUMINUM ALLOYS." UKnowledge, 2001. http://uknowledge.uky.edu/gradschool_diss/392.

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Texture, microstructure and formability were studied in Direct Chill Cast (DC) and Strip Cast (SC) aluminum alloys with regard to crystallographic anisotropy, the Portevin-Le Chatelier effect and aging softening behavior. It was found that material properties change greatly with manufacturing processes (DC vs. SC) and chemical composition (3xxx vs. 5 xxx alloys). DC cast hot band materials are usually fully recrystallized and have strong softening textures while SC hot band materials have a rolling structure with strong deformation textures. Softening textures cause 90 earing while deformation

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47

Saleem, Muhammad Qaiser. "Helium Assisted Sand Casting of Aluminum Alloys." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-dissertations/204.

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Sand casting is the most widely used casting process for both ferrous and non-ferrous alloys; however, the process is marred by large grain size structures and long solidification times. The coarser microstructure has a negative effect on the mechanical properties of the cast components and the long processing time affects the overall productivity of the process. The research reported herein addresses these problems for aluminum sand castings by enhancing the rate of heat extraction from the casting by replacing air, which is typically present in the pores of the sand mold and has a relatively

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48

Prabhakar, Vinay Kumar 1977. "Transient liquid-phase infiltration of aluminum alloys." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/89894.

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49

Huang, Ting-Yun Sasha. "Stability of nanostructured : amorphous aluminum-manganese alloys." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104107.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 113-122).<br>Nanocrystalline alloys have attracted interest for decades because of their improved mechanical strength without sacrificing ductility, but structural stability has always been an issue. In this work, bulk aluminum-mangane

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50

Shariati, Hossein. "Micromechanical study of PFZ in aluminum alloys." Thesis, KTH, Hållfasthetslära (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190115.

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There are a number of experiments showing that the ductility of aluminum alloys decreases during age-hardening heat treatment. Observing the grains of age-hardened aluminum alloys at the micron scale, one can notice that there are precipitate-free zones (PFZs) along the grain boundaries. PFZ has yield stress three times lower than the grain interior (bulk) due to absence of alloying elements. As a result, PFZ is suspected to be the reason for ductility reduction of alloys. On the other hand, a number of experiments performed on specimens with micron-scale dimensions have shown that the plastic

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