... Accession Number : ADD139804. Title : Corrosion of AA 7075 Aluminum Alloy in Media Contaminated with Cladosporium Resinae,. ...

... are currently composed of aluminum alloy AA7075-T6, which ... for corrosion- prone AA7075-T6 extruded ... evaluation of these alloys for replacement of ...

... compression dominated structures fabricated from aluminum is given, along with information on Alcoa's new 7XXX series aluminum alloy, AA 7075. ...

... various aluminum, titanium, nickel based alloys and steels ... of Corrosion Damaged AA7075-T6 and ... Life Improvement of an Aluminum Alloy FSW with ...

... various aluminum, titanium, nickel based alloys and steels ... of Corrosion Damaged AA7075-T6 and ... Life Improvement of an Aluminum Alloy FSW with ...

... in aluminum, titanium, nickel based alloys and steels. ... of Corrosion Damaged AA7075-T6 and ... Life Improvement of an Aluminum Alloy FSW with ...

example, if one compares typical properties of the aluminum-lithium-copper alloys of this investigation to AA 7075-T73 aluminum, the following gains are ...

... Abstract : Aluminum alloys AA7012, AA7075 and AA7475 were treated thermally and mechanically to produce materials with small grain size and ...

... titanium, and nickel based alloys and steels. ... Performance of Corrosion Damaged AA7075-T6 and ... Life Improvement of an Aluminum Alloy FSW with ...

... Fatigue Performance of Corrosion Damaged Aa7075-T6 and ... Abstract : Corrosion related fatigue in aluminum structural alloys and fretting ...

... of the solution in stress corrosion cracks in aluminum alloys developed in ... Some recent experiments in which AA7075-T651 specimens were stress ...

of this research on an SCC-susceptible. 7000-series aluminum alloy in aqueous ...... AA7075 was provided by E.A. Colvin of the Alcoa. Technical. Center. ...

... Accession Number : ADD136186. Title : Effect of Organic Adsorbants on the Aqueous Stress Corrosion Cracking of AA 7075-T651 Aluminum Alloy,. ...

The following design allowables for 6061-T6 aluminum alloy are attached: Modulus of Elasticity. Modulus of Rigidity. Creep Strength ...... 21 -AA 7075 ...

Abstract: The influence of laser peening on the fatigue crack growth behavior of friction stir welded (FSW) Aluminum Alloy (AA) 7075-T7351 sheets was ...

... Title : Evidence for Crack Tip Oxidation Effects during the Liquid Metal Embrittlement of AA 7075 Aluminum Alloy by Mercury,. ...

welded (FSW) Aluminum Alloy (AA) 7075-T7351 sheets was investigated. The surface modification resulting from the peening process on the fatigue crack growth ...

... ADD137844. Title : Cationic Film-Forming Inhibitors for the Corrosion Protection of AA 7075 Aluminum Alloy in Chloride Solutions,. ...

In an aircraft fuel, microbial contamination creates serious corrosion problems. The wing tank bottom and sides are affected by the growth of a biological sludge associated with the condensed water. The behavior of the AA 7075 Al alloy in a culture of the principal contaminant, the fungus Cladosporium resinae, is determined. The ...

... Title : A Calorimetric Study of Aluminium Alloy AA-7075,. ... Abstract : The precipitation mechanism in AA7075 in the T4, T6 and T73 tempers were ...

The values listed are considered applicable to all aluminum alloy substrates, including AA 7075-T73, provided coating thickness is .010 in. or greater. ...

and Spray Deposited Aluminum Alloys. M.J. Haynes and R.P. Gangloff. Project ...... AA7075-T651, with compact tension specimens in the environmental cracking ...

for each alloy. The OCPs of CCC-treated alloys with high Cu content, AA7075 and AA7050, were about 200 m in high-Cu content alloys such as AA7075 and AA2024. There- fore, CCC protection on high-Cu content AA7075 on Chromate Conversion Coating Protection ...

The effect of the addition of sulfate ions on corrosion inhibition of Aluminum Association (AA) 7075 aluminum (Al) alloy (UNS A97075) in aqueous solution was studied. Corrosion behavior was affected significantly by the addition of SO{sub 4}{sup 2{minus}}. The corrosion morphology and corrosion ...

The scope of this project is to evaluate the environmentally assisted long crack growth behavior of candidate high-strength aluminum alloys/tempers, specifically AA7150-T7751 and AA7040-T7651, for consideration as viable replacements/refurbishment for stress-corrosion cracking in susceptible AA7075-T6 aircraft ...

The presence of oxalate in chloride-containing corrosive aqueous media was found to protect aluminum alloy AA 7075 (UNS A95075). The effect of 0.05 M sodium oxalate on induction times for the initiation of pit formation was measured on AA 7075 specimens. The variance and ...

The engineering properties of the aluminum alloys AA7075-T73, AA7050-T736 and AZ74.61 were compared through destructive testing. Strength, fracture toughness, fatigue crack propagation under different load spectra, and resistance to stress corrosion crack...

Corrosion related fatigue in aluminum structural alloys and fretting damage in high strength steels are primary failure mechanisms that reduce the structural integrity of aging aircraft. A chemically active environment, susceptible material and static and...

Positron Annihilation Spectroscopy has been used to study the microstructure in aluminum alloy AA7075-T6 after RRA (retrogression and re-aging) heat treatment. Nano-precipitates act as traps for thermalised positrons. The measured positron lifetime is sensitive to the local electron density at the annihilation site ...

... Accession Number : ADD120283. Title : The Chemical Nature of Aluminum Corrosion--IV: Some Anion Effects on SCC of AA 7075-T651,. ...

... T851 wing skin AA7075-T6 empennage ... are common treatments for aluminium alloys, and they ... composition of the alloy, manufactured condition ...

... alloys subjected to centrifugal atomization and rapid solidification; specimens of aa 7075 with 1% addition of Co, Fe, Mn, or Ni were used; alloy ...

... basic topics: technology review materials and material types: aa 7075-t6 materials related terms: aluminum cladding, cadmium addition, ion vapor ...

... aa 6061, aa 7075, cw67, rae alloy 72 materials related terms: cerium addition, chromium addition, cobalt addition, copper addition, creep resistance ...

... aa 2024-t3, aa 7075-t6 materials related terms: anodic polarization, chromate coatings, chromium addition, copper addition, corrosion protection ...

Electrochemical noise (EN) generated during the corrosion of metal specimens can be analyzed for its stochastic nature. Voltage fluctuations observed during the exposure of commercial aluminum (Al) sheet material were analyzed using a new technique based on randomness of these fluctuations. The stochastic process detector (SPD) technique was found to be very sensitive to the ...

This report contains an annotated bibliography of 950 documents on the Hot Isostatic Pressing (HIP) Technology dealing with metals, alloys, and intermetallic compounds and covers over 450 materials. Documents published from 1966 to early 1992 are covered. Bibliographic information reported here are divided into three broad categories. The first category includes an annotated ...

Friction stir welding (FSW), a relatively new solid-state joining process, is used to join Al alloys of all compositions, including alloys essentially considered unweldable. This study focused on microstructures in FSW Al alloy 7075-T651 (AA 7075-T651 [UNS 97075-T651]), an ...

This article reports the effect of postweld aging treatment on fatigue behavior of pulsed current welded AA 7075 aluminum alloy joints. AA7075 aluminum alloy (Al-Zn-Mg-Cu alloy) has gathered wide acceptance in ...

... Title : Comparison of Corrosion-Fatigue Cracking of Al-Li Alloy AA 2090-T8E41 and Alloy AA 7075-T651 in Salt Water,. ...

AA 7075-T7352. Z transfers the loads to the HH Double. Bay Pallet. ... Z two nickel-alloy bands (Ni 718) with three floating Aluminium-alloy clamps ...

an aluminum valve housing which is mounted in the stationary piston I.Do. The ...... AA7075-T6. ANODIZE. DIMENSIONS. SPOOL. & SLEEVE,. DIA. CLR. ,0003".0006 ...

The galvanic corrosion behavior of a depleted uranium-titanium alloy (Du-.75Ti) coupled to MgZk60A-T5, AA-7075-T6, bare steel-4340, and coated steel-4340 exposed to ASTM seawater was investigated by monitoring the galvanic current with time. Gravimetric measurements, polarization resistance measurements, and concepts of ...

The design of space systems and associated equipment has to be based on fracture control principles to prevent failure of certain structural items resulting in catastrophic or critical events. In order to prevent such catastrophic hazards from occurring, use of containment design is an attractive option. A simplified analytical method for verification of containment is developed and described. ...

An aluminium alloy AlMgSi ~ ~ 1 6. (A.A. 6063-~6) was employed for the extrusion except for the spar, which was of. A.A. 7075. In more recent years the same ...

Friction Stir Welding (FSW) has reached a large interest in the scientific community and in the last years also in the industrial environment, due to the advantages of such solid state welding process with respect to the classic ones. The complex material flow occurring during the process plays a fundamental role in such solid state welding process, since it determines dramatic changes in the ...

Friction Stir Welding (FSW) has reached a large interest in the scientific community and in the last years also in the industrial environment, due to the advantages of such solid state welding process with respect to the classic ones. The complex material flow occurring during the process plays a fundamental role in such solid state welding process, since it determines dramatic changes in the ...

Near-surface compressive residual stresses, which are generated by shot peening, are known to retard crack initiation and thus extend the fatigue life of a metal component. The ability to effectively measure these near-surface residual stresses would greatly help predict the fatigue life of shot-peened components. This research uses the nonlinear surface acoustic wave technique to measure the ...

The development of high strength levels in Al-Mg-Zn-(Cu) alloys is dependent on the decomposition of the supersaturated solid solution ([alpha][sub ss]). The equilibrium phase, [eta], and the transition phase, [eta][prime], have compositions Mg(Zn, Al, Cu)[sub 2] and the GP Zones are solute rich clusters. Several authors have presented evidence that there is another ...

The anti-corrosion properties of a novel double strand conductive polymer coating on aluminum alloys in salt environments as a possible replacement for chromium conversion coatings was investigated. The conductive coating consisted of a double helix backbone structure of polyaniline wrapped with an esterified polyacrylic acid strand. This polymer complex ...

... Title : Stress Corrosion Cracking of AA 7075-T651 in Various Electrolytes-- Statistical Treatment of Data Obtained Using DCB Precracked Specimens ...

Discontinuously reinforced aluminum (DRA) composites have many advantages over the unreinforced aluminum alloys and have found increasing applications in the automotive industry. The wear behavior plays a very important role in DRA composites for such applications. The commonly used apparatus for studying the DRA abrasive wear include ...

The objective of this study was to characterize the formation and breakdown of chromate conversion coatings (CCCs) on aluminum alloys Al-Zn-Mg-Cu 7075 and 7475 with a focus on the effect of alloy temper, alloy purity and selected coating processing variables. Overall, results consistently pointed to a slight temper ...

Rolled aluminum alloys are known to be anisotropic due to their processing histories. This paper focuses on measuring and modeling monotonic and cyclic strength anisotropies as well as the associated anisotropy of the elastic/elastic-plastic transition of a commercially-available rolled plate product. Monotonic tension tests were conducted on specimens in ...

Friction stir welding (FSW) is a solid state joining process currently being used for alloys that are usually difficult to weld using fusion welding techniques. Residual stresses in FSW may be considerably less than those in fusion welds since FSW takes place at a lower temperature than fusion welding. However, the rigid clamping arrangement used in FSW, along with the heating ...

... PERFORMANCE OF ALUMINUM ALLOYS 1100, 3003 ... DIFFERENCES IN ALLOY PERFORMANCE. ... OF THE ALUMINUM ALLOYS IS OBSERVED ...

3D microstructure modeling is a powerful way to study mesoscale mechanisms and phenamena and to explore the effect that the microstructure may (or may not) have on material performance. This work focuses on processes for generating statistically representative implicit microstructure models of polycrystalline materials, and extracting explicit geometries from implicit microstructure data. The ...

... Title : On the Nature of the Occluded Cell in the Stress Corrosion Cracking of AA 7075-T651-Effect of Potential, Composition, Morphology,. ...

... ALUMINUM ALLOY WELDMENTS UNDER THE GUIDANCE OF THE ALUMINUM ALLOYS COMMITTEE OF THE WELDING RESEARCH COUNCIL ...

... Accession Number : AD0815691. Title : WELDING OF ALUMINUM AND ALUMINUM ALLOYS,. Corporate Author : BATTELLE ...

... ALLOYS), (*ANODES, ALUMINUM ALLOYS), (*ELECTROCHEMISTRY, ALUMINUM ALLOYS), SEA WATER, MERCURY ALLOYS, ZINC ALLOYS ...

The present article deals with the studies undertaken to resolve an industrial problem, where the desired minimum tensile properties in the T651 temper, i.e., 0.2 pct PS = 530 MPa, UTS = 580 MPa, and elongation (in 50-mm gage length) = 7 pct, were difficult to obtain in a reproducible manner in low-alloy (i.e., alloy containing major ...

... Title : Development of Cast Aluminum Alloys for Elevated ... to develop an aluminum alloy for service at ... of the various alloys subsequently cooled to ...

... COPPER ALLOYS, MANGANESE ALLOYS, ALUMINUM ALLOYS, TIN ALLOYS, INDIUM ALLOYS, BISMUTH ALLOYS, GERMANIUM ALLOYS ...