Aluminum Alloy
Mostrando 1-12 de 188 artigos, teses e dissertações.
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1. On the effect of interrupted ageing (T6I4) on the mechanical properties of AA6351 and AA7050 alloys
Abstract The mechanical properties of age-hardenable aluminum alloys are strongly influenced by the volume fraction, size and spacing of hardening precipitates. In addition, researches have shown that interrupted ageing (T6I4) could benefit the hardening response of these alloys. Interrupted ageing is a term generally used for the microstructural developmen
REM, Int. Eng. J.. Publicado em: 2021-01
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2. Effects of Geometrical Feature on Microstructures and Mechanical Properties of Refill Friction Stir Spot Welding 6061 Aluminum Alloy
Refill friction stir spot welding (refill FSSW) is a solid state joining technology developed and patented by Helmholtz-Zentrum Geesthacht. Refill FSSW is a welding process suitable for spot joining lightweight materials in similar and dissimilar joint configuration. The result is a spot welded in lap configuration with minimal material loss and a flat surfa
Mat. Res.. Publicado em: 17/01/2020
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3. High-Frequency Induction Heating of Al-Si-Cu-Mg aluminum alloy in Thixoforming
Thixoforming is the process of shaping near net shape metal components in a semisolid state. The process consists of preparing feedstock, reheating and shaping. Reheating the billet is the most critical step in thixoforming. Induction heating requires precise temperature control to obtain globular microstructure and prevent process defects, such as insuffici
Mat. Res.. Publicado em: 28/10/2019
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4. Effect of Squeeze Casting on Microhardness and Microstructure of Al-3Cu-xSi Alloy
Aluminum alloys of the ANSI series 319 present Si and Cu as the main alloying elements and the mechanical strength of these alloys can be improved by the precipitation of the metastable Al2Cu phase. Squeeze Casting is a casting process in which the cast metal is deposited in a metal mold and solidified under certain pressure exerted by a punch. This process
Mat. Res.. Publicado em: 30/09/2019
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5. Effect of surface roughness and lubrication on the friction coefficient in deep drawing processes of aluminum alloy aa1100 with fem analysis
ABSTRACT Friction between the interface workpiece and tooling has considerable importance in sheet metal forming operations; an accurate description of the friction is necessary to analyze and design new workpieces and tooling. This work suggests a methodology to determine and evaluate the mean coefficient of friction (COF) using the Finite Element Method (F
Matéria (Rio J.). Publicado em: 16/09/2019
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6. Mechanical Properties and Metallurgical Characterization of LM25/ZrO2 Composites Fabricated by Stir Casting Method
ABSTRACT Zirconia (ZrO2) dispersed aluminum alloy metal matrix composites produced by stir casting techniques. Using stir casting techniques, aluminium based composites with varying amounts of 3%, 6%, 9%, and 12% of zirconia by weight are fabricated. The prepared samples were subjected to physical, mechanical,tribiology and microstructure investigation. The
Matéria (Rio J.). Publicado em: 16/09/2019
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7. Influencia de la geometría del proyectil en ensayos dinámicos de tracción
ABSTRACT The focus of this study is to discuss the influence of the projectile’s length on the results of an experiment of the Hopkinson Traction Bar (SHTB). Simulations have been made by means of finite elements using the commercial software ABAQUS in tests of traction at high speeds of deformation in samples of aluminum alloy 7017T73 varying the length o
Matéria (Rio J.). Publicado em: 16/09/2019
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8. Polypyrrole Film Doped with Corrosion-Inhibitors Electropolymerized on AA 1100
Polypyrrole films doped with dodecylbenzenesulfonate (PPy/DBS) and with oxy-anions tungstate (PPy/DBS/TUN) and vanadate (PPy/DBS/VAN) were potentiostatically electropolymerized on aluminum alloy 1100 (AA1100). The corrosion protection of these films was evaluated by the variation of the corrosion potential (ECORR) with the immersion time and by electrochemic
Mat. Res.. Publicado em: 05/09/2019
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9. Comparison of Aluminum Based Alloys Reinforced with Intermetallic Developed by Powder Metallurgy and Arc Melting Routes
Abstract In this work, Al-Ti alloys were prepared using metallic powders of Al and Ti via Powder Metallurgy (PM) and Arc Melting (AM) route. Four chemical compositions including pure aluminum were studied. Metallic powders were mixed with three compositions, Al-5Ti, Al-10Ti and Al-10Ti-2SiC. All the compositions were in atomic percentage. In case of PM, samp
Soldag. insp.. Publicado em: 29/08/2019
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10. Effect of Electric Pulse Treatment on the Corrosion Resistance of HAl52-2 Aluminum Brass
In this work, the effects of electric pulse treatment (EPT) on the corrosion resistance of HAl52-2 aluminum brass has been investigated using electrochemical workstation, scanning electron microscope and X-ray diffraction. The results have shown that after EPT, the corrosion potential increased and the corrosion current density decreased. At the same time, t
Mat. Res.. Publicado em: 19/08/2019
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11. Corrosion Behavior of AA7075-T73 Aluminum Alloy During Machining of Aeronautical Components
Corrosion of AA7075-T73 aluminum alloy during machining process was studied. An experimental device was proposed in order to simulate machining procedure. A design of experiments - DOE was used in order to evaluate what process parameter is significant. Some electrochemical tests based on open-circuit potential vs time measurements and potentiodynamic polari
Mat. Res.. Publicado em: 01/07/2019
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12. Microstructure evolution during the extrusion of a 6351 aluminum alloy tube
Abstract The aluminum alloy AA 6351 is a precipitation hardened alloy of the Al-Mg-Si system, additionally containing Mn and Fe. In this study, the microstructural characterization during processing of a thick wall extruded AA 6351 tube was carried out. Several complementary techniques for microstructural characterization were used, such as polarized light o
REM, Int. Eng. J.. Publicado em: 19/06/2019