Relevant bibliographies by topics / Surface treatments; Aluminium alloys

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Surface treatments; Aluminium alloys'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Surface treatments; Aluminium alloys"

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Ardelean, M., S. Lascău, E. Ardelean, and A. Josan. "Surface treatments for aluminium alloys." IOP Conference Series: Materials Science and Engineering 294 (January 2018): 012042. http://dx.doi.org/10.1088/1757-899x/294/1/012042.

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Edigarov, V. R. "Surface Friction-Electric Treatment of Aluminum Alloys." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (727) (November 2020): 47–53. http://dx.doi.org/10.18698/0536-1044-2020-10-47-53.

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This paper examines a combined friction-electric treatment of surface layers of machine parts made of aluminums alloys. The temperature released during the friction process is the main technological factor of the treatment, and the heat released during the passage of electric current through the local volume of friction-thermal action is an additional heat source. The paper presents the results of studying a surface modification method involving friction-electric treatment of aluminium alloys with reinforcement by aluminium oxide particles under varied technological conditions: density of electric current, pressing force of the tool, shape of the tool working zone and speed of treatment. A hard alloy tool with high temperature resistance was used as a tool for friction-electric treatment. The tool was installed in a mandrel of a special design allowing supply of a modifier representing a mixture of aluminum oxide particles with a surfactant to the treatment zone. Using the friction-electric treatment of the surface layer of samples with reinforcement by aluminum oxide particles it was possible to increase the surface hardness by about 30–40 % and thickness of the hardened layer by 3–5 times due to the local deformation and passage of electric current through the treatment zone, and to improve wear resistance of the surface layer.
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Wada, Tadahiro, and Junsuke Fujiwara. "Surface Modification of Aluminium Alloys." Materials Science Forum 519-521 (July 2006): 765–70. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.765.

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One of the surface modification methods is proposed in this report to improve the wear resistance of light metal such as aluminum alloys. At first alumite layer is formed on the surface of aluminum alloy JIS A6061 which was used as the substrate with anodic oxidation treatment method. Then thin layer of CrN is coated with sputtering method, and diamond like carbon (DLC) layer is finally coated with ion plating method. The influence of the thickness of the alumite layer on wear-resistance is experimentally investigated. The critical load of the coated aluminum alloy in scratch test is measured with the surface property tester, and the wear amount of the coated aluminum alloy is measured with the SUGA abrasion tester. The main results obtained are as follows: (1) The critical load of coated aluminum alloy with the alumite layer in the scratch test is higher than that without the alumite layer. (2) The wear amount of the coated aluminum alloy increased with the increase of the thickness of the alumite layer. (3) This combined surface treatment method can become new surface modification method because this method provided excellent adhesive strength and good wear-resistance.
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Carangelo, Anna, Annalisa Acquesta, Francesco Bravaccino, Ciro Sinagra, and Tullio Monetta. "Effect of Fluoride Addition in Sulfuric Acid-Based Desmutting Solution for Aluminium Alloy AA8006." Key Engineering Materials 813 (July 2019): 285–91. http://dx.doi.org/10.4028/www.scientific.net/kem.813.285.

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Aluminium alloys are covered spontaneously by a natural oxide layer, well adherent to the surface. For improving the material’s anticorrosion performance surface pre-treatments are needed in order to remove the superficial oxide and to prepare the alloy surface to subsequent treatments. The pre-treatment process involves several steps, including desmutting. The last requires the immersion of the part in an appropriate solution, typically composed of several chemicals, able to remove the oxide layer. In this work, the effect of the fluorides addition into a sulfuric acid-based solution, when used in a desmutting industrial process, was evaluated. Potentiodynamic curves, glow discharge optical emission spectrometry and contact angle techniques were used to characterize the surface of the aluminium alloy AA8006 after desmutting.
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Spadaro, Chiara, Carmelo Sunseri, and Clelia Dispenza. "Laser surface treatments for adhesion improvement of aluminium alloys structural joints." Radiation Physics and Chemistry 76, no. 8-9 (August 2007): 1441–46. http://dx.doi.org/10.1016/j.radphyschem.2007.02.047.

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Daswa, Pfarelo, Heinrich Möller, Madeleine du Toit, and Gonasagren Govender. "The Solution Heat Treatment of Rheo-High Pressure Die Cast Al-Mg-Si-(Cu) 6xxx Series Alloys." Solid State Phenomena 217-218 (September 2014): 259–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.217-218.259.

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The 6xxx series alloys are well known for desirable combinations of high strength, weldability, corrosion resistance and formability. This paper investigates the influence of chemical composition on the solution heat treatment parameters of rheo-high pressure die cast (R-HPDC) 6xxx series aluminium alloys. The presence of copper in the 6xxx series aluminium alloys affects the solution heat treatment by promoting incipient melting. The incidence of incipient melting is investigated for the R-HPDC alloys using Differential Scanning Calorimetry (DSC) and optical microscopy. R-HPDC is known to produce surface liquid segregation and centre-line liquid segregation when processing the alloys and these areas are the most susceptible to incipient melting. The applicability of single and multiple step solution heat treatments are investigated. The alloys used for this study include the Cu-free alloy 6082, as well as the Cu-containing alloys 6013 and 6111.
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Labisz, Krzysztof, and Tomasz Tański. "Laser Surface Treatment of Cast Aluminium-Silicon Alloys." Solid State Phenomena 275 (June 2018): 30–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.275.30.

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The reason of performing the investigations carried out in this work was to investigate the microstructure of the laser treated Al-Si-Cu cast aluminium alloy with the ceramic powder particles using High Power Diode Laser (HPDL) for remelting, and/or alloying. First of all the feeding and distribution of the powder in the surface layer of the alloyed and remelted AlSi7Cu material. Very important issue is the determination of the laser treatment parameters, especially the powder feeding rate, laser power, and scan rate to achieve an enhancement of the layer hardness for ensuring this cast aluminium alloy from losing their working properties and to achieve the tool surface is more resistant to wear. The purpose of this work was also to determine technological and technical conditions comparison for the Al2O3 and SiC ceramic powder alloyed into the surface layer with High Power Diode Laser. There are presented also the investigation results about the determination of proper technical condition during the laser treatment, especially the laser head distance and shielding gas influence. The presented results concerns first of all the structure investigation of the obtained surface layer allowing it to achieve an enhanced hardness and wear resistance more resistant for work, special attention was devoted to monitoring of the layer morphology of the investigated material and on the particle occurred. Light (LM) and scanning electron microscopy (SEM) were used to characterize the microstructure of the obtained surface zones - the remelted zone (RZ) and heat affected zone (HAZ), the ceramic powder distribution and intermetallic phases occurred. A wide range of laser power values was applied and implicated with different laser scan rates. The powders in form of ceramic powders used for alloying were chosen with the particle size of ca. 60μm. This study was conducted to investigate the influence carbide and oxide powder addition on structure and mechanical properties as well the and structure changes occurred during the rapid solidification process. The investigation ensures to use laser treatment for alloying/feeding of ceramic powder particles into the surface of light alloys. The scientific reason of this work is the applying of High Power Diode Laser (HPDL) for improvement of aluminium`s mechanical properties, especially the surface hardness. As the main findings was determined that the obtained surface layer is homogeny without cracks and has a comparably higher hardness value compared to non-treated material. The surface hardness increases together with the applied laser power, the highest power applied gives the highest hardness value for the surface. Also the distribution of the ceramic particles is proper, but there a need for further modelling, because the hardness increases in general according to the laser power used so that the highest power applied gives to highest hardness value in the remelted layer, but for other powder amount or alloy the values should be determined separately, and more data would be necessary to create a model for the technique appliance. The practical purpose of this work is to analysis the impact and application possibility of HPDL laser surface treatment on the cast Al-Si-Cu alloys to deliver application possibilities for diverse branches of industry.
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Forn, Antonio, Josep A. Picas, Maite T. Baile, Sergi Menargues, and V. G. García. "Anodic Oxide Layer Formation on A357 Aluminium Alloy Produced by Thixocasting." Solid State Phenomena 116-117 (October 2006): 80–83. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.80.

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Anodizing is widely used in the surface treatment of aluminium alloys in order to preserve the integrity of the alloy surface, to minimize the need for maintenance and repair, and to maximize the component life. The aim of this work is to study the influence heat treatments (T5 and T6) have on the anodization of A357 aluminium alloy produced by a Thixocasting process. In particular the effect of shape, size and distribution of silicon and intermetallic phases on the anodic oxide film formation. SEM and EDS analyses were used to examine the microstructural features found on, within and under the anodic oxide layer. Experiments using a tribometer (pin-on-disc tests) were performed in order to evaluate the friction and wear properties of the different layers.
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Monetta, Tullio, Anna Carangelo, Francesco Bravaccino, Ciro Sinagra, and Annalisa Acquesta. "The Effect of Hydrofluoric Acid Concentration in Sulfuric Acid-Based Desmutting Solution for Aluminium Alloys." Materials Science Forum 1016 (January 2021): 934–39. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.934.

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The natural oxide layer, which spontaneously covers the surface of aluminium and its alloys, is well adherent to the surface, but it does not show adequate corrosion resistance in many conditions. In order to improve the material anti-corrosion performance, it is necessary to replace the surface oxide by a conversion coating. The first step to do this is to prepare the alloy surface to subsequent treatments. The pre-treatment implemented before the conversion treatment is one of the main factors responsible for the performance of the conversion coating. It involves several phases, including desmutting that encompasses the part immersion in an acid or alkaline solution bath. In this work, the influence of hydrofluoric acid concentration in the desmutting bath's formulation was investigated. The samples surface were characterised by using electrochemical techniques, glow discharge optical emission spectrometry and contact angle measurements.
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Liu, Y., F. Colin, P. Skeldon, G. E. Thompson, X. Zhou, H. Habazaki, and K. Shimizu. "Enrichment factors for copper in aluminium alloys following chemical and electrochemical surface treatments." Corrosion Science 45, no. 7 (July 2003): 1539–44. http://dx.doi.org/10.1016/s0010-938x(02)00249-4.

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Dissertations / Theses on the topic "Surface treatments; Aluminium alloys"

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Pratchett, Chris. "New surface treatments for the diffusion bonding of aluminium alloys." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390998.

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Gentile, Marialuisa. "Influence of zinc on surface treatments of aluminium-zinc alloys." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/influence-of-zinc-on-surface-treatments-of-aluminiumzinc-alloys(5b467a34-ba91-422b-87e0-83ef8d700154).html.

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This research work studies the influence of zinc on surface treatments such as mechanical polishing, anodic alkaline etching, alkaline etching and electropolishing. Solid-solution binary alloys containing 0.6, 1.0 and 1.9at.%Zn were investigated using scanning and transmission electron microscopies and ion beam analysis. Initially, the near-surface composition of the surface pretreated aluminium alloys were determined using Rutherford backscattering spectroscopy (RBS), medium energy ion scattering (MEIS) and glow discharge optical spectroscopy (GDOES). Subsequently, the surface morphologies of the pretreated specimens were characterized by secondary electron microscopy (SEM) and atomic force microscopy (AFM). Further related work was undertaken on the effect of the employed surface treatments on the anodic behaviour of aluminium-zinc alloys. A final analysis was carried out on the influence of grain orientation on zinc enrichment and surface morphologies of aluminium-zinc alloys developed during alkaline etching.The results reveal that surface pretreatments of aluminium-zinc alloys lead to zinc enrichment at the alloy/film interface. The number of zinc atoms contained in the enriched layer depends upon the employed surface pretreatment and the alloy composition. Surface pretreatments influence the topography of Al-Zn alloys. In particular, for electropolishing, alkaline etching and anodic alkaline etching, the resultant surface morphologies were associated with the oxidation-dissolution-precipitation mechanisms occurring at the alloy/film interface and at the film/solution interface. Anodizing of Al-Zn alloys shows that the anodic films growth on Al-Zn alloys in rolled condition and after surface treatment becomes detached from the substrate independently of the surface treatment employed, although detachment of the anodic film occur earlier on surface pre-treated Al-Zn alloys that developed zinc enrichment. The final studies correlated the mechanisms of oxidation and dissolution with the grain orientation. The result revealed that the (111) grain dissolves faster than other grains, while the higher number of zinc enriched atoms were measured on the (001) grain.
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Critchlow, Gary W. "Pretreatments for metal-to-metal bonding." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/7525.

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Wickramatillake, Chandika Diran. "Effects of siloxane surface treatments on strength and durability of adhesively bonded aluminium joints." Thesis, University of Hertfordshire, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323650.

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SANTOS, WAGNER I. A. dos. "Carcterização da resistência a corrosão de ligas de aluminio após tratamentos alternativos a cromatização, com e sem revestimento orgânico." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9948.

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IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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SILVA, LUCIANA V. da. "Estudos dos mecanismos envolvidos em processos de endurecimento superficial a laser de ligas a base de aluminio." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9634.

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IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Mhaede, Saad Mansour Hamed. "Corrosion performance of high strength aluminum alloys-effects of mechanical surface treatments." Clausthal-Zellerfeld Papierflieger, 2008. http://d-nb.info/996419667/04.

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REIS, FERNANDO M. dos. "Investigacao do tratamento com moleculas auto-organizaveis para substituicao da cromatizacao da liga AA5052H32 no preparo da superficie previo a pintura." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11365.

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IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Gharbi, Oumaïma. "In-situ investigation of elemental corrosion reactions during the surface treatment of Al-Cu and Al-Cu-Li alloys." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066563/document.

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Ce travail de thèse s’est porté sur l’étude des alliages d’aluminium, et en particulier les alliages AA2024-T3 et AA2050-T3. L’alliage AA2024-T3 à base d’Al-Cu-Mg est utilisé depuis des décennies dans le domaine de l’aérospatial pour sa légèreté et ses excellentes propriétés mécaniques, est progressivement remplacé par les alliages Al-Cu-Li tels que l’AA2050-T3. Néanmoins, il en résulte parallèlement une microstructure très hétérogène, rendant l’AA2024 très sensible à la corrosion. Plusieurs moyens de protections - appelés traitements de surface- ont donc été développés, dans le but de ralentir au maximum la dégradation de l’alliage. Le prétraitement, une étape préliminaire au traitement de surface a pour but de préparer la surface de l’alliage. Plusieurs études ont démontré que cette étape est indispensable et assure l’efficacité du traitement de surface. Afin d’observer l’effet du prétraitement, plusieurs techniques de caractérisations de surface sont utilisées. La microscopie électronique à balayage (MEB) et la spectroscopie à photoélectron X (XPS) sont parmi les plus citées. Toutes ces méthodes ont pour objectif de s’assurer de la dissolution des éléments d’alliages, et de mettre en évidence les effets d’enrichissement de cuivre. Jusqu'à présent, aucune méthode n’a permis d’obtenir une analyse complète et in situ de la réactivité de tous les éléments lors du prétraitement. L’objectif principal de ces travaux de thèse était de développer une nouvelle méthodologie, capable de prodiguer une mesure précise de la réactivité d’alliages complexes tels que les alliages d’aluminium durant une séquence de prétraitement et d’apporter des informations sur le AA2050-T3, pour lequel la littérature est beaucoup plus pauvre en données quant à la réactivité de l’élément d’alliage Li avec les solutions de prétraitement
This PhD thesis focused on the study of aluminum alloys, particularly the AA2024-T3 and AA2050-T3. The Al-Cu-Mg based alloy (AA2024-T3) are used for decades in the field of aerospace for its lightness and excellent mechanical properties are progressively replaced by and Al-Cu-Li (AA2050-T3) alloys. Nevertheless, they exhibit a highly heterogeneous microstructure, making them sensitive to corrosion. Several surface treatments formulations, such as coatings, have been developed, with the aim of slowing as much as possible the degradation of these alloys. The pretreatment, a preliminary step to surface treatment, is intended to prepare the surface of the alloy prior coating application. Several studies have shown that this step is essential and ensures the effectiveness of the surface treatment. In order to observe the effect of the pretreatment, several surface characterization techniques were used. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) are among the most cited. All these methods are intended to quantify the dissolution of the alloying elements. To date, none has been able to obtain a complete and in situ analysis of the elemental reactivity of a complex alloy during the pretreatment. The main objective of this thesis was to develop a new methodology capable of providing a precise measurement of the reactivity of complex alloys such as aluminum alloys during a pretreatment sequence and to provide information on AA2050 -T3, as very little is reported about the reactivity of Li during the surface treatment
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SZURKALO, MARGARIDA. "Investigacao do efeito de moleculas auto-organizaveis na resistencia a corrosao da liga de aluminio 1050." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9488.

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IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Books on the topic "Surface treatments; Aluminium alloys"

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Wernick, S. The surface treatment and finishing of aluminium and its alloys. 5th ed. Metals Park, Ohio: ASM International, 1987.

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Wernick, S. The surface treatment and finishing of aluminium and its alloys. 5th ed. Teddington: Finishing, 1987.

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Wernick, S. The surface treatment and finishing of aluminium and its alloys. 5th ed. Metals Park, Ohio: ASM International, 1987.

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Wernick, S. The surface treatment and finishing of aluminium and its alloys. 5th ed. Teddington: Finishing, 1987.

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Moulinier, Flavie. The surface treatment of high strength aluminium alloys and its effect on the fatigue crack growth. Birmingham: University of Birmingham, 1999.

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Wernick, S. The surface treatment and finishing of aluminum and its alloys. 5th ed. Ohio: ASM International, 1987.

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Rezai-Tabrizi, M. R. Surface treatments of titanium and its alloys. Manchester: UMIST, 1989.

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Surface engineering of light alloys: Aluminium, magnesium and titanium alloys. Boca Raton: CRC Press, 2010.

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Sohi, Mahmoud Heydarzadeh. Duplex surface engineering of aluminium-silicon based alloys. Birmingham: University of Birmingham, 1991.

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Bin, Liu. Surface cleaning of high strength aluminium alloys and its effect on fatigue. Birmingham: University of Birmingham, 2003.

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Book chapters on the topic "Surface treatments; Aluminium alloys"

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Hosson, J. Th M., L. Otterloo, and J. Noordhuis. "Microstructure and Mechanical Properties of Laser Treated Aluminium Alloys." In Laser Processing: Surface Treatment and Film Deposition, 511–27. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0197-1_26.

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Witthar, Karin, Jeremy Brown, and Dwight Burford. "Swept FSSW in Aluminum Alloys through Sealants and Surface Treatments." In Friction Stir Welding and Processing VI, 417–24. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062302.ch48.

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Hilpert, Matthias, and Lothar Wagner. "Response of Light Alloys to Mechanical Surface Treatments: Comparison of Magnesium and Aluminum Alloys." In Magnesium Alloys and their Applications, 525–29. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607552.ch83.

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Seri, Osami. "Surface Treatment for Corrosion Resistant Aluminium Alloys by Removing Intermetallic Phases." In Materials Science Forum, 729–34. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.729.

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Waterhouse, R. B. "The Effect of Surface Treatments on the Fretting Wear of an Aluminium Alloy (RR58)/Steel (BS 970 080 M40) Couple." In Surface Engineering, 325–34. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0773-7_33.

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Tański, Tomasz, Wojciech Pakieła, Maciej Wiśniowski, and Leszek Adam Dobrzański. "Shaping of Surface Layer Structure and Mechanical Properties After Laser Treatment of Aluminium Alloys." In Mechanical and Materials Engineering of Modern Structure and Component Design, 85–96. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19443-1_7.

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Son, Seong Ho, Dae Chol Kwon, and Do Won Jeong. "Development of Free Nitric acid, Non-P Desmut Solution for Surface Treatment Aluminium Alloys." In Eco-Materials Processing and Design IX, 309–12. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-472-3.309.

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Wada, Tadahiro, and Junsuke Fujiwara. "Surface Modification of Aluminium Alloys." In Materials Science Forum, 765–70. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.765.

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Dong, Xuecheng. "Surface Treatments for Magnesium Alloys." In Handbook of Manufacturing Engineering and Technology, 3031–54. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-4670-4_49.

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Dong, Xuecheng. "Surface Treatments for Magnesium Alloys." In Handbook of Manufacturing Engineering and Technology, 1–21. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4976-7_49-1.

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Conference papers on the topic "Surface treatments; Aluminium alloys"

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Brown, R., Dharma R. Maddala, and A. M. Cree. "The Effect of Corrosion Resistant Non Chromate Surface Treatments on the Fatigue Behaviour Aluminium Alloys." In Marine & Offshore Coatings. RINA, 2010. http://dx.doi.org/10.3940/rina.coat.2010.07.

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Liu, Z., M. McMahon, K. G. Watkins, W. M. Steen, R. M. Vilar, and M. G. S. Ferreira. "Laser surface treatment of aluminium alloys for enhanced pitting resistance." In ICALEO® ‘93: Proceedings of the Laser Materials Processing Conference. Laser Institute of America, 1993. http://dx.doi.org/10.2351/1.5058664.

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Vega, L. F., E. L. Colvin, J. Moran, M. Egbert, T. Nakayama, K. Ikeda, H. Shige, and T. Ueda. "Influence of Surface Treatments on Durability of Painted Aluminum Alloys." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/970731.

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Peyre, Patrice, Vincent Vignal, Hassan Amar, Hongbin Song, Hervé Pelletier, and Vincent Ji. "Modification of the electrochemical properties of 2050-T8 aluminium alloys by a LSP surface treatment." In ICALEO® 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2009. http://dx.doi.org/10.2351/1.5061469.

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Peyre, P., L. Berthe, and R. Fabbro. "Improving the Properties of Materials With Laser-Peening: An Overview on French Activities." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93307.

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Extensive work was carried out in France since 1986 on all the fields relevant to laser-shock processing (or laser-peening), including plasma physics, laser shock-waves detonics, surface modifications (residual stresses ...), and improvement of materials properties such as fatigue, corrosion or wear. The paper aims at presenting an overview on the most recent works about LP, with a special focus on FE modeling aspects for residual stress predictions, on pitting corrosion properties of a 316L steel after LP treatment, and on different fatigue applications, mainly on aluminium alloys. For most of the applications considered, the benefits of LP will be discussed, compared with usual mechanical treatments such as shot-peening.
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Chinnakurli Suryanarayana, Ramesh, Ummar Khan Attaullah, Kumar Saheb, Apoorva Kumar, and Manoj Kumar Rajput. "Slurry Erosive Wear Behavior of Forged Al6061-CeO2-TiO2 Hybrid Composites." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64402.

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Aluminium alloys are being widely used in naval applications owing to their excellent corrosion resistance and high formability characteristics. One of the most popular naval components is the tarpedo blade which makes use of forged aluminium alloy followed by anodizing surface treatment for corrosion protection. In recent years, there have been few attempts to replace the conventional aluminium alloys by their composites for the tarpedo blade applications. Literature review clearly says that CeO2 (Ceria) coating on aluminium and aluminium composites enhances their corrosion protection in aggressive marine environment. Further, there are reports suggesting that combination of CeO2 and TiO2 do yield better corrosion protection. However, there is no information on the work related to development of hybrid ceramic reinforced aluminium alloy matrices with CeO2 and TiO2 as particulate reinforcements for potential naval applications. In the light of above, the present work focuses on the development of novel Al6061-CeO2-TiO2 hybrid metal matrix composite by stir casting route followed by hot extrusion with an extrusion ratio of 8:1 at a temperature 550 °C and hot forging at 475 °C. The developed forged hybrid composites and the matrix alloy have been evaluated for microstructure, micro hardness and slurry erosion wear tests as per the ASTM Standards.
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Karimi, A., P. H. Giauque, M. Sagradi, G. Barbezat, and A. Salito. "High Damping Capacity Iron-Chromium-Aluminium Based Coatings for Surface Vibration Control." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p0581.

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Abstract The ability of high damping iron-chromium-aluminium alloys and coatings to absorb noise and vibrations has been investigated over a wide range of frequencies and amplitudes. The damping capacity was determined using a cantilever method based on the modal analysis technique of the flat beams and was found to be very sensitive to internal stress of specimens. Heat treatment usually enhanced the loss capability, but only an optimised annealing restored the maximum damping capacity. The influence of vibration amplitude evidenced by appearance of a maximum around ε = 10-4”, while the vibration frequency did not influence 'damping behaviour significantly. The position of the maximum damping was shifted towards lower strains with annealing time and temperature. The structure of magnetic domains was observed using the magneto-optical Kerr effect and their modification following to an applied stress or magnetic field was associated with different values of the damping capacity. Accordingly, the beneficial effect of annealing on damping capacity arises on the one hand from improved mobility of unpinned domain walls and on the other hand from growth of 90° domains considered as the principal responsible of damping. Addition of aluminium between 1-8 wt%. improved the damping values notably around 4 wt%.
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Huang, Yanjun, Makoto Ohta, Tara Pederson, and Orit (Baron) Milligan. "The Effects of Secondary Phases on the Characteristics of Diffusion-induced Functional Surface Treatments." In HT2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.ht2019p0026.

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Abstract For engineering materials such as cast aluminum or cast iron used in wear applications, the wear surfaces are modified to increase wear resistance. Conversion coatings are the most common surface modification methods in many alloys in which the wear surfaces are chemically, electrochemically or thermally activated and converted into coherent ceramic structures that are resistant to wear. The development of conversion coatings is controlled by the diffusion mechanisms of the functional film forming elements and affected by many factors such as temperature, chemistry and microstructure of the substrate. This paper attempts to examine the effects of the secondary phases in the cast structures to the diffusion behaviors of the conversion coating forming elements and the general coating characteristics. Processes to produce desirable substrate microstructure in order to achieve preferred coating characteristics at lower processing costs and methods to measure the effective functional film thickness are proposed.
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Hyakudome, Tadahiro, and Shoji Kuroyama. "Development of surface treatment for aluminium alloy." In OCEANS 2014. IEEE, 2014. http://dx.doi.org/10.1109/oceans.2014.7003166.

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Horowitz, Emmanuel. "The Importance of Establishing an Operational Approach for the Selection of Materials in the Reactors of the Future." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48651.

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Nuclear scientists and engineers should consider adopting a more operational approach for the purpose of selecting their future materials. For each type of nuclear power generating reactor, for each coolant (water, helium or liquid metal), the next generation of specialists and decision-makers will need to choose and optimise the iron or nickel alloys, steels, ODS (oxide dispersed strengthened steels) and ceramics that are going to be used. It may well be considered that either each reactor type has its own, specific materials, or, in a complementary manner, that the efforts for improvements should be shared. At high temperatures, as found on fuel-cladding liners, heat exchangers or even tubes or tube liners, different types of steels and alloys may be envisaged. It is considered that austenitic steels provide a better creep resistance at high temperature but they must be stabilized by nickel, thereby becoming more expensive. Ferrite steels could be better as far as swelling, mechanical strength and thermal behaviour are concerned. To withstand corrosion, chromium or aluminium, ODS steels could turn out to be good solutions, if they can comply with stringent criteria. Concerning heat exchangers, choices must be made between iron and nickel alloys, according to proposed operating conditions. In the case of sodium-cooled rapid neutron reactors (RNRs), ferritic-martensitic alloys with 9%–12% chromium or chromium ODS steels could prove suitable, especially if we judge by their specific mechanical behaviour, up to at least 700°C. Nevertheless, behaviour of these steels — with respect to ageing, anisotropy, radiation induced segregation, radiation induced precipitation, reduction of activation products and welding — needs be better understood and qualified. Sodium heat exchanger materials should be carefully chosen since they have to withstand corrosion arising from the primary flow and also from the secondary or tertiary flow (either sodium or molten salts, gas or water); therefore, experimental loops are necessary to gain improved understanding and assessment of the designs envisioned. One way to improve alloys is through thermal, mechanical treatments or by surface treatments. A better way could, however, be to improve the nanostructure and mesostructure of the materials chosen at the drawing-board stage, for instance by nano-size cluster dispersion and grain size controls; experimental tests, microscope and spectroscope observations, multi-scale modelling and thermodynamics computing could also help calibrate and implement these improvements. Large, experimental databases and codes will be the keystone to defining more operational knowledge bases that will then allow us to determine terms of reference for the new materials. Failing this, time will be running out — within the next twenty years — to design and develop nuclear prototypes consistent with the criteria laid down for “Generation IV” reactors.
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Reports on the topic "Surface treatments; Aluminium alloys"

1

Knobbe, Edward T. Sol-Gel Derived Surface Treatments for Aircraft Aluminum Alloys. Fort Belvoir, VA: Defense Technical Information Center, March 2002. http://dx.doi.org/10.21236/ada405721.

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Barrow, Jason A. Investigations of the Electronic Properties and Surface Structures of Aluminium-Rich Quasicrystalline Alloys. Office of Scientific and Technical Information (OSTI), January 2003. http://dx.doi.org/10.2172/816443.

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Murakami, Haruhiko, Makoto Kawai, Hiroaki Tamamaki, Takahiro Yuuki, Keisuke Daikoku, and Wattna Patnuch. Improvement of Corrosion Resistance of Aluminum Alloy by a New Surface Treatment Technology ‘PAHP-Treatment’. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0078.

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Blau, Peter J., Kevin M. Cooley, Melanie J. Kirkham, and Dinesh G. Bansal. Investigation of Surface Treatments to Improve the Friction and Wear of Titanium Alloys for Diesel Engine Components. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1148409.

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