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Dissertations / Theses on the topic '2024-T3'

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Published: 4 June 2021
Last updated: 13 February 2022

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1

Akhtar, Anisa Shera. "Surface science studies of conversion coatings on 2024-T3 aluminum alloy." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1713.

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The research in this thesis aims to develop new mechanistic knowledge for coating processes at 2024-Al alloy surfaces, ultimately to aid the design of new protective coatings. Coatings formed by phosphating, chromating, and permanganating were characterized especially by scanning Auger microscopy (SAM), X-ray photoelectron spectroscopy, and scanning electron microscopy . The objective was to learn about growth (nm level) as a function of time for different coating baths, as well as a function of lateral position across the different surface microstructural regions, specifically on the μm-sized
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2

Wang, Xi. "Corrosion Protection of Aluminum Alloy 2024-T3 by Al-Rich Primer." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1557143060015145.

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3

Cai, Hong. "Microbiologically influenced corrosion and titanate conversion coatings on aluminum alloy 2024-T3 /." View online ; access limited to URI, 2006. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3225314.

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4

Petersen, Amanda de Moura. "Comportamento inibidor da corrosão de antocianinas na liga de alumínio 2024-T3." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/153271.

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A eficiência de antocianinas como inibidores de corrosão da liga de alumínio 2024-T3 foi avaliada através de medidas eletroquímicas como a espectroscopia de impedância eletroquímica e polarizações anódica e catódica. Soluções de NaCl 0,025 mol.L-1 contendo diferentes concentrações (800, 1000, 2000, 3000, 5000 e 7200 ppm) de antocianinas extraídas da uva foram preparadas para analisar o efeito da presença destas substâncias quando em contato com a liga de alumínio 2024-T3. Medidas de espectroscopia de impedância eletroquímica apresentaram uma diminuição sobre a dispersão dos pontos nas regiões
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5

GUO, YANG. "A Study of Trivalent Chrome Process Coatings on Aluminum Alloy 2024-T3." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1308166499.

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6

Tamborim, Takeuchi Silvia Margonei Mesquita. "Revestimentos anticorrosivos à base de silanos sobre a liga de alumínio 2024-T3." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/16169.

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Revestimentos de silanos foram depositados sobre a liga de alumínio 2024 - T3 a fim de avaliar a sua utilização como revestimento protetor à corrosão. O capítulo I trata sobre o estudo do comportamento corrosivo de tratamentos baseados na deposição de camadas de 3-(trimetoxisililpropilmetacrilato (TMSPM) e/ou nitrato de cério sobre a liga de alumínio 2024 T-3 (AA2024 T-3). A resistência à corrosão foi avaliada por espectroscopia de impedância eletroquímica (EIE) durante a imersão em soluções de NaCl e Na2SO4 0,1molL-¹. Microscopia de força atômica (AFM), microscopia eletrônica de varredura (ME
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7

Lopez-Garrity, Omar A. "Corrosion Inhibition Mechanisms of Aluminum Alloy 2024-T3 by Selected non-Chromate Inhibitors." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1372077968.

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8

Boag, Adam Paull, and adam boag@gmail com. "The Relationship Between Microstructure and Stable Pitting Initiation in Aerospace Aluminium Alloy 2024-T3." RMIT University. Applied Science, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091028.114831.

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Aluminium alloys are essential to a variety of industry sectors, particularly transport, where they are used in the production of cars and aeroplanes. However, aluminium alloys are susceptible to degradation through corrosion which can compromise the integrity of components manufactured from this material. Therefore research into the means by which these alloys degrade is important. This thesis aims to understand how one of the more potentially damaging types of corrosion, known as pitting corrosion, occurs in the important aluminium alloy 2024-T3 (AA2024-T3). In order to study this pheno
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9

Chilukuri, Anusha. "Corrosion Inhibition by Inorganic Cationic Inhibitors on the High Strength Aluminum Alloy, 2024-T3." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343784869.

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10

Elaish, Reafat. "Influences of fluorine species on the anodizing behaviour of aluminium and AA 2024-T3 alloy." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/influences-of-fluorine-species-on-the-anodizing-behaviour-of-aluminium-and-aa-2024t3-alloy(7849513e-31b6-4f71-a6ee-126ee5221321).html.

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The present study investigates the effect of fluorine species during anodizing of aluminium and AA2024-T3 alloy in sulphuric acid and tartaric-sulphuric acid (TSA) electrolytes. The investigation comprises four main parts; (i) Effects of fluoride on barrier film formation on aluminium. (ii) Effects of fluoride and fluorozirconic acid (FZ) on porous film growth on aluminium in sulphuric acid. (iii) Effects of FZ on porous film growth on aluminium and AA 2024-T3 alloy in sulphuric acid and TSA. (iv) Effects on anodizing of other fluoroacids (fluoroboric (FB), fluorosilicic (FS) and fluorotitanic
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11

Huang, I.-Wen Evan. "Uniform Corrosion and General Dissolution of Aluminum Alloys 2024-T3, 6061-T6, and 7075-T6." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469105977.

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12

Palomino, Luis Enrique Morales. "Caracterização microestrutural e eletroquímica de revestimentos ambientalmente amigáveis aplicados sobre a liga de Al 2024-T3." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-14012008-093144/.

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A crescente preocupação com o desenvolvimento sustentável, aliada com uma maior conscientização com relação à preservação do meio ambiente, tem incentivado pesquisas com a finalidade de encontrar substitutos ambientalmente amigáveis para os eficientes sistemas à base de cromo hexavalente (Cr6+), que são empregados como pré-tratamento em ligas de alumínio de alta resistência utilizadas na indústria aeronáutica. Neste trabalho, o desempenho do silano BTSE (Bis-1,2-(trietoxisilil) etano) como método de proteção contra a corrosão da liga de alumínio 2024-T3 foi investigado utilizando técnicas de c
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13

Cendron, Suelen Weimer. "Revestimentos à base de BTSE/GPTMS como tratamento anticorrosivo para a liga de alumínio 2024-T3." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/147232.

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A liga de alumínio AA2024-T3 é largamente empregada na indústria aeronáutica devido à suas propriedades mecânicas, porém essa liga apresenta baixa resistência à corrosão. Cromatos são usualmente empregados como tratamento anticorrosivo e apresentam bom desempenho quando aplicados sobre alumínio e suas ligas. No entanto, o uso de espécies que contenham Cr(VI) vem sendo restringido devido à alta toxicidade e carcinogenicidade. Silanos representam uma alternativa à cromatização e apresentam vantagens como ser uma tecnologia ambientalmente correta, ter bom desempenho anticorrosivo e promover adesã
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14

Shivalli, Praveen Smith Bert. "The effect of dents on fatigue life and fatigue crack growth of aluminum 2024-T3 bare sheet." Diss., A link to full text of this thesis in SOAR, 2006. http://soar.wichita.edu/dspace/handle/10057/681.

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Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering.<br>"December 2006." Title from PDF title page (viewed on Sept. 24, 2007). Thesis adviser: Bert Smith. Includes bibliographic references (leaves 62-64).
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15

Ahn, Joseph. "Experimental characterisation and numerical simulation of fibre laser welding of AA 2024-T3 and Ti-6Al-4V." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/53827.

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The aircraft industry has long recognised the importance of climate protection and the benefits of reducing weight for the production of cost effective and fuel efficient aircraft structures. Fibre laser welding provides advantages over conventional riveting, mainly in terms of weight reduction and time saving. However, significant changes in microstructure, metallurgical state and associated mechanical properties occur in welded joints. Such changes can result in residual stresses, distortions and defects formation in the welded structure, thus significantly influencing the performance and se
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16

Morabito, Anna Eva. "Analyse thermomécanique des effets thermoélastiques et dissipatifs associés au comportement en fatigue de l'alliage d'aluminium 2024 T3." Montpellier 2, 2003. http://www.theses.fr/2003MON20183.

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17

Oliveira, Fernando Silva de. "Análise de tensões residuais por difração de raios-x em chapas de alumínio 2024-T3 soldadas por FSW." Instituto Tecnológico de Aeronáutica, 2011. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=3022.

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A soldagem por FSW (Friction Stir Welding) tem como principal característica o fato do material não fundir durante o processo. Isso ocorre porque as temperaturas atingidas durante a soldagem são inferiores à temperatura de fusão do material, sendo essa uma das vantagens desse processo em relação aos processos convencionais. Entretanto, o calor local gerado é suficiente para o aparecimento de tensões residuais no material. As tensões residuais de soldagem modificam as propriedades mecânicas do material, podendo causar falhas prematuras em estruturas. A medição de tensões residuais é um processo
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18

Guo, Xiaolei. "Corrosion inhibition of aluminum alloy 2024-T3 based on smart coatings, hybrid corrosion inhibitors, and organic conversion coatings." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461188604.

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19

Fontana, Álvaro. "Utilização de polianilina como revestimento protetor contra corrosão das ligas de alumínio 2014 F, 2024 T3 e 7075 O." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-25102007-165457/.

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É grande o uso do alumínio em virtude de sua viabilidade técnica e econômica além da alta proteção frente à corrosão conferida pelo filme de óxido de alumínio formado em sua superfície. Neste trabalho foram realizadas deposições de filme de polianilina (PAni) sobre ligas de alumínio AA-2014, AA-2024 e 7075 O. Os experimentos de eletropolimerização foram realizados por voltametria cíclica e cronoamperometria a partir de soluções aquosas contendo ácido fosfórico, ácido sulfâmico e anilina. Para a caracterização dos filmes obtidos sobre as superfícies das ligas foram utilizadas as técnicas de esp
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20

Goetze, Paul Aaron. "A Comparative Study of 2024-T3 and 7075-T6 Aluminum Alloys Friction Stir Welded with Bobbin and Conventional Tools." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1556807142415698.

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21

ASHIRGADE, AKSHAY A. "ENVIRONMENTALLY-COMPLIANT NOVOLAC SUPERPRIMERS FOR CORROSION PROTECTION OF ALUMINUM ALLOYS." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1153245386.

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22

Bonhin, Eduardo Pires. "Estudo do processo de furação do laminado metal fibra de alumínio 2024-T3 e epóxi reforçado com fibra de vidro /." Guaratinguetá, 2019. http://hdl.handle.net/11449/181761.

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Orientador: Marcos Valério Ribeiro<br>Resumo: A utilização de materiais compósitos em componentes do setor aeronáutico vem crescendo muito nos últimos anos. Isso se deve ao fato destes materiais apresentarem boas propriedades mecânicas, aliadas a sua baixa massa específica. Dentre estes, os laminados metal fibra, são uma classe de materiais que vem ganhando destaque. Contudo seu emprego na maioria dos casos, requer a confecção de furos, algo que é muito complexo e pode causar danos ao material. Portanto, o objetivo desta pesquisa foi estudar o processo de furação em cheio de um laminado de met
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23

BUGARIN, ALINE de F. S. "Estudo da resistência à corrosão das ligas de alumínio 2024-T3 e 7475-T651 soldadas por fricção e mistura (FSW)." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28030.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-21T11:56:39Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-21T11:56:39Z (GMT). No. of bitstreams: 0<br>O processo de soldagem por fricção e mistura (FSW) tem despertado grande interesse nos últimos anos e tornou-se uma alternativa para unir materiais de baixa soldabilidade, como as ligas de alumínio das séries 2XXX e 7XXX, as quais são empregadas na estrutura das aeronaves, por possuírem elevada relação resistência/peso. O processo FSW, todavia, causa mudanças microestruturais nos materiais soldados, particularmente na z
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24

Bugarin, Aline de Fátima Santos. "Estudo da resistência à corrosão das ligas de alumínio 2024-T3 e 7475-T651 soldadas por fricção e mistura (FSW)." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-26102017-141238/.

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O processo de soldagem por fricção e mistura (FSW) tem despertado grande interesse nos últimos anos e tornou-se uma alternativa para unir materiais de baixa soldabilidade, como as ligas de alumínio das séries 2XXX e 7XXX, as quais são empregadas na estrutura das aeronaves, por possuírem elevada relação resistência/peso. O processo FSW, todavia, causa mudanças microestruturais nos materiais soldados, particularmente na zona misturada (ZM) e nas zonas termicamente (ZTA) ou termomecanicamente (ZTMA) afetadas. Estas mudanças geralmente interferem no desempenho frente à corrosão das ligas soldadas.
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25

Roungos, Ioannis C. "The effect of sequential action of corrosion and fatigue on fatigue crack initiation and propagation in 2024-T3 aluminium alloy." Thesis, Cranfield University, 1997. http://dspace.lib.cranfield.ac.uk/handle/1826/11122.

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The influence of sequential action of corrosion and fatigue on fatigue behaviour of 2024- T3 aluminium alloy was investigated. EXCO solution was used for corrosion development. Corrosion evolution and penetration were investigated in terms of exposure time, dimensional characteristics, orientation, microstructure of material, incremental corrosion application and sequential application of corrosion and fatigue. Single Edge Notch Tensile specimens were used in the fatigue-corrosion tests. Fatigue intervals were interrupted by corrosion application. Four fatigue intervals and four corrosion segm
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Roungos, I. C. "The effect of sequential action of corrosion and fatigue on fatigue crack initiation and propagation in 2024-T3 aluminium alloy." Thesis, Cranfield University, 1997. http://dspace.lib.cranfield.ac.uk/handle/1826/11122.

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The influence of sequential action of corrosion and fatigue on fatigue behaviour of 2024- T3 aluminium alloy was investigated. EXCO solution was used for corrosion development. Corrosion evolution and penetration were investigated in terms of exposure time, dimensional characteristics, orientation, microstructure of material, incremental corrosion application and sequential application of corrosion and fatigue. Single Edge Notch Tensile specimens were used in the fatigue-corrosion tests. Fatigue intervals were interrupted by corrosion application. Four fatigue intervals and four corrosion segm
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27

Queiroz, Fernanda Martins. "Estudo do comportamento de corrosão dos intermetálicos presentes na liga AA 2024-T3, por meio de técnicas de microscopia associada a técnicas eletroquímicas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-17082009-152449/.

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A liga de alumínio AA2024-T3, amplamente utilizada na indústria aeroespacial, apresenta elevada resistência mecânica conferida pela adição de elementos de liga, principalmente o Cu, que formam precipitados finamente distribuídos e coerentes com a matriz, durante o processo de envelhecimento controlado. No entanto, durante este processo, também se formam intermetálicos (IMs) maiores com composição e atividade eletroquímica diferentes da matriz, tornando a liga altamente suscetível a processos de corrosão localizada. A literatura apresenta diversos trabalhos sobre o estudo da corrosão da AA2024-
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28

André, Natália Manente. "Friction spot joining of aluminum alloy 2024-t3 and carbon-fiber-reinforced polyphenylene sulfide composite laminate with additional pps film interlayer." Universidade Federal de São Carlos, 2015. https://repositorio.ufscar.br/handle/ufscar/8275.

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Costa, Douglas Henrique da Silva [UNESP]. "Estudo do efeito do processo de shot peening na taxa de propagação de trinca por fadiga na liga aeronáutica 2024 - T3." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/123234.

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Made available in DSpace on 2015-05-14T16:53:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-20Bitstream added on 2015-05-14T16:59:18Z : No. of bitstreams: 1 000824425.pdf: 5119036 bytes, checksum: d2208b40c21a089b314a4455cfc48518 (MD5)<br>Este trabalho tem por finalidade avaliar o efeito do processo de shot peening na taxa de propagação de uma trinca por fadiga já existente. O shot peening é um processo de trabalho a frio, que consiste no jateamento repetitivo com microesferas de aço, cerâmica ou vidro, na superfície de uma peça, produzindo encruamento e induzindo tensões resid
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Costa, Douglas Henrique da Silva. "Estudo do efeito do processo de shot peening na taxa de propagação de trinca por fadiga na liga aeronáutica 2024 - T3 /." Guaratinguetá, 2015. http://hdl.handle.net/11449/123234.

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Orientador: Marcelo Augusto Santos Torres<br>Banca: Antonio Jorge Abdalla<br>Banca: Carlos Antonio Reis Pereira Baptista<br>Resumo: Este trabalho tem por finalidade avaliar o efeito do processo de shot peening na taxa de propagação de uma trinca por fadiga já existente. O shot peening é um processo de trabalho a frio, que consiste no jateamento repetitivo com microesferas de aço, cerâmica ou vidro, na superfície de uma peça, produzindo encruamento e induzindo tensões residuais compressivas nas superfícies tratadas. Devido a isso, o shot peening tem-se mostrado um método bastante eficiente para
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Pinto, Junior Carlos Carvalho Engler 1965. "Analise de retardo na propagação de trincas de fadiga em uma chapa de aluminio 2024-T3 submetida a carregamentos de amplitude variavel." [s.n.], 1989. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264893.

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Orientador: Ana Maria Martinez Nazar<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Campinas<br>Made available in DSpace on 2018-07-16T21:35:15Z (GMT). No. of bitstreams: 1 PintoJunior_CarlosCarvalhoEngler_M.pdf: 4199608 bytes, checksum: 9f6c06ae97977693a2ecec513035fb2d (MD5) Previous issue date: 1989<br>Resumo: A maior parte das falhas de estruturas metálicas particularmente na indústria aeronáutica, é devido à ação de cargas cíclicas (fadiga), que podem provocar o surgimento e a propagação de trincas no material. Quando o espectro de cargas aprese
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Sofyan, Nofrijon Bin Imam Gale W. F. "Microstructure and mechanical properties of 2024-T3 and 7075-T6 aluminum alloys and austenitic stainless steel 304 after being exposed to hydrogen peroxide." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Materials_Engineering/Dissertation/Sofyan_Nofrijon_36.pdf.

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Nookala, RamaKrishna. "Mechanistic Study of Silane Assisted Rubber to Brass Bonding and the Effect of Alkaline Pre Treatment of Aluminum 2024 T3 on Silane Performance." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148065049.

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34

Le, Thi My Linh. "Simulation de l'effet du confinement sur l'endommagement d'un assemblage en alliage d'aluminium." Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS048.

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Pour les structures aéronautiques, les zones sensibles à la corrosion sont principalement celles où le plan de protection de la structure peut être mis en défaut, comme à l’intérieur des joints de recouvrement (dénommé «lap joint» en anglais). Les assemblages de tôles métalliques réalisés par recouvrement en utilisant, par exemple le rivetage, peuvent présenter des défauts de contact et donc il peut exister un interstice entre les deux parties de l’assemblage. En général cet interstice est isolé de l’environnement extérieur par un mastic. Mais il y a un risque de piégeage d’humidité plus ou mo
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35

Martin, Castillo Morales. "Examining the effects of ultrasonic impact treatment as a severe plastic deformation process on the fatigue behaviour of 2024-T3 and T150-T651 aluminium alloys." Thesis, University of Sheffield, 2008. http://etheses.whiterose.ac.uk/6106/.

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Aluminium alloys are widely used in aerospace vehicles which are under cyclic loads through their operation. The loads may cause detrimental changes in material structure being more prone to crack initiation, starting a potential process of failure for the structure. In this research the effects of fatigue damage are assessed for two aluminium alloys, 2024-T3 and 7150-T561, after using a surface engineering method which uses the plastic deformation on the surface, like many others, to extend (or reduce) the fatigue life of materials.
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36

Gavelius, Marianne, and Karin Andersson. "Surface Treatment for Additive Manufactured Aluminum Alloys." Thesis, Linköpings universitet, Molekylär ytfysik och nanovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-169027.

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Manufacturing of aircraft parts is often complex and time-consuming, which has led to an increased interest in new manufacturing technologies in the Swedish industry such as additive manufacturing (AM). Additive manufacturing techniques could be a solution to meet the aircrafts’ demand since it contributes to an efficient manufacturing and allows a just-in-time production of complex metal parts in their final shape. However, the use of AM aluminum for aircraft applications is in a development phase and no surface treatment process exists. Thereby, it is of high interest to further investigate
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37

Ely, Marion. "Conversion chimique des surfaces d'alliages d'aluminium sans chrome hexavalent." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066663/document.

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Les couches de conversion actuellement utilisées dans l'industrie aéronautique, pour protéger le métal de la corrosion et favoriser l'adhérence de la peinture, contiennent du chrome hexavalent, composé toxique et cancérigène dont l'utilisation va prochainement être interdite par la réglementation européenne REACh. L'une des pistes envisagée pour remplacer ces couches chromatées est l'utilisation de couches de conversion TCP (Trivalent Chromium Protection). Ces travaux portent sur l'étude des couches de TCP et s'attachent à caractériser chaque étape du traitement de surface industriel, incluant
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38

Gates, Nicholas R. "Fatigue Behavior under Multiaxial Stress States Including Notch Effects and Variable Amplitude Loading." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469637495.

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39

Even, Anaïs. "Compréhension des mécanismes d'inhibition de la corrosion dans le cadre de revêtements hybrides pour pièces aéronautiques." Thesis, Lorient, 2019. http://www.theses.fr/2019LORIS534.

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La lutte contre la corrosion dans l'industrie aéronautique est un défi permanent. Pour y répondre, le système actuel fait appel aux chromates qui présentent des qualités anticorrosives. Ces composés sont cependant classés cancérigènes, mutagènes, reprotoxiques. Un revêtement hybride sol-gel/polymère non toxique a été développé pour proposer une alternative au système de référence. Il présente des performances de protection contre la corrosion de l’alliage d’aluminium 2024-T3. Ce revêtement est innovant par son application par pulvérisation et sa polymérisation sous irradiation UV. Ce système e
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Young, Paul S. "Modeling and Analysis for Atmospheric Galvanic Corrosion of Fasteners in Aluminum." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1430416832.

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41

Lee, Michael Che-Chiang. "Pretreatments of Al-2024 T3 alloy for BTSE silane deposition." Thesis, 2002. http://hdl.handle.net/2429/14287.

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Work in this thesis studied different alkaline etching procedures performed on Al-2024 alloy prior to deposition of bis-triethoxysilylethane (BTSE). X-ray photoelectron spectroscopy and scanning electron microscopy were used to study the chemistry and morphology of the surfaces formed after the various pretreatments and coatings have been applied. The corrosion performance of these samples were assessed using polarisation curve measurements and immersion testing. Sonicating tests were performed to determine, semi-quantitatively, the adhesion of BTSE to Al-2024 panels after application o
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42

Lo, Shih-Ming, and 羅世明. "Process Development of Friction Stir Clinching of Alcad 2024-T3 Aluminum Sheets." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/38362402963846173311.

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碩士<br>國立中正大學<br>機械工程學系暨研究所<br>102<br>A novel friction stir spot clinching (FSSC) process which combines the conventional FSSW process and clinching process was proposed to join Alcad 2024-T3 Aluminum Sheets. The research works first investigated the effects of tool size and die size on the mechanical locking structure and shear strength of clinch joints. The processing parameters such as tool pin length, indentation depth, rotational speed, hold time, were then investigated to obtain appropriate processing parameters. The effects of tool geometry on the locking structure of clinch joints we
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43

Yi, Han-Bang, and 易漢邦. "A Study of Trivalent Chromium Conversion Coatings on Aluminum Alloy 2024-T3." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/29232571116092772509.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>103<br>Aluminum alloy 2024-T3 has widely been used in the aircraft industry. To avoid an air crash caused by corrosion of the alloy, conversion coatings have commonly conducted on aluminum alloy 2024-T3. Hexavalent chromium conversion coatings provide excellent anti-corrosion properties; however, hexavalent chromium is a toxic element and harmful to species and environment. International directives have strictly banned the use of hexavalent chromium. Therefore, many efforts have been made to find the process alternative to hexavalent chromium conversion process.
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44

Chien-HsiungWang and 王健雄. "Effect of Corrosion on the Fatigue Behavior of 2024-T3 Aluminum Alloy." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/10456738190327065849.

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碩士<br>國立成功大學<br>航空太空工程學系專班<br>98<br>In this study, the 2024-T3 aluminum alloy was used as base material. By using alternative immersion corrosion process with an artificial corrosive environment in laboratory, 2024-T3 aluminum alloy specimens were subjected to continual immersion-dry process in 3.5% sodium chloride solution for 7, 21, and 42 days, respectively. After the corrosion process, the specimens were then subjected to fatigue test at different stress levels and S-N curves of material under different corrosion level were obtained. In addition, through the use of Scanning Electronic Micr
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45

Su, Zheng-Ming, and 蘇政明. "Fatigue Analyses for Swept Friction Stir Spot Welds on Alclad 2024-T3 Aluminum Sheets." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/32789261495511115247.

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博士<br>國立中正大學<br>機械工程學系暨研究所<br>102<br>Fracture and fatigue behaviors of swept friction stir spot welds (Swept-FSSWs) in lap-shear and cross-tension specimens of Alclad 2024-T3 aluminum sheets were first investigated by experimental approaches in this research. The Swept-FSSWs were made by a welding tool with a triangular probe and aluminum sheets with 1.6 mm thickness. Optical and scanning electron micrographs of the welds before and after failure under quasi-static and cyclic loading conditions were examined. Experimental results indicated that lap-shear specimens have three failure modes w
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Pan, Chun-Ting, and 潘俊廷. "Effect of Acidic Pretreatments on Trivalent Chromium Conversion Coating on Aluminum Alloy 2024-T3." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/596vf6.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>105<br>Aluminum alloy 2024-T3 has widely been utilized in the aircraft industry because of the high mechanism strength and low-weight. Adding alloy elements into aluminum substrate improve the mechanism strength but reduce the corrosion resistance. To improve corrosion resistance, conversion coating has been conducted on aluminum alloy 2024-T3. Hexavalent chromium conversion coating once is a choice of conversion coating; However, Hexavalent chromium is a toxic substance and harm both human and environment. Therefore, substitutions are necessary. Trivalent chromi
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47

Matos, Paulo Fernando Pinto de. "The influence of residual stresses on the fatigue behaviour of 2024-T3 Al specimens." Dissertação, 2003. http://hdl.handle.net/10216/12149.

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Dissertação apresentada para obtenção do grau de Mestre em Engenharia Mecânica, na Faculdade de Engenharia da Universidade do Porto, sob a orientação dos Professores Paulo Manuel Salgado Tavares de Castro e Artur Portela
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Susac, Darija. "Surface science studies of organosilane and zinc phosphate coatings on 2024-T3 aluminum alloy." Thesis, 2003. http://hdl.handle.net/2429/16104.

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The effects of 2024-T3 alloy microstructure on the formation of organosilane and zinc phosphate (ZPO) coatings have been studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) , energy dispersive X-ray (EDX ) spectroscopy and scanning Auger microscopy (SAM). Some studies of corrosion protection were also made using electrochemical polarization measurements, especially for comparing different post-treatment rinses applied to the ZPO coatings. This thesis describes new information for the different chemistries occurring at microregions of 2024-A1 alloy, especially
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Matos, Paulo Fernando Pinto de. "The influence of residual stresses on the fatigue behaviour of 2024-T3 Al specimens." Master's thesis, 2003. http://hdl.handle.net/10216/12149.

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Dissertação apresentada para obtenção do grau de Mestre em Engenharia Mecânica, na Faculdade de Engenharia da Universidade do Porto, sob a orientação dos Professores Paulo Manuel Salgado Tavares de Castro e Artur Portela
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Hsu, Hsiao-Hung, and 許曉弘. "EndoFEM Studies on Mode I Crack Growth Mechanical Behavior of Al 2024-T3 CT Specimen." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/17006802672350624280.

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