inspection of forged aluminum alloy (AA 7050) main landing gear (MLG) wheels ... The shuttle MLG wheel is forged and constructed of aluminum alloy AA 7050. ...
NASA Website
The aluminum alloy, (AA 7050) laboratory fatigue tests were conducted to simulate the local stress level contained in the wheel bolt-hole. ...
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...
National Technical Information Service (NTIS)
It is well established that Al-Zn-Mg-(Cu) aluminum alloys are susceptible to hydrogen environment assisted cracking (HEAC) when exposed to aqueous environments. In Al-Zn-Mg-Cu alloys, overaged tempers are commonly used to increase HEAC resistance at the expense of strength. Overaging has little benefit in low copper ...
Energy Citations Database
A methodology for incorporating a description of material structure into a finite element formulation is presented. This modeling framework was used to study the development of deformation induced surface roughening in thin sheets machined from AA 7050 thick plate. Predicting this roughening phenomenon necessitates the quantification and representation of ...
NASA Astrophysics Data System (ADS)
The hydrogen embrittlement controlled stage II crack growth rate of AA 7050 (6.09 wt.% Zn, 2.14 wt% Mg, 2.19 wt.% Cu) was investigated as a function of temper and alloyed copper level in a humid air environment at various temperatures. Three tempers repre...
The mechanism of environment-assisted cracking (EAC) of 7xxx-series alloys is unclear, involving uncertain contributions of hydrogen embrittlement (HE) and anodic dissolution (AD). Fundamental understanding of the EAC mechanism is lacking in part because the role of the crack environment is not well understood. The objective of this research was to characterize and understand ...
There is strong evidence to indicate that hydrogen embrittlement plays a significant, if not controlling, role in the environmentally assisted cracking of 7XXX series aluminum alloys. In order to better understand hydrogen environment assisted cracking (HEAC), crack growth rate tests in the K-independent stage II crack growth regime were conducted on ...
Precipitation hardenable Al-Zn-Mg alloys are susceptible to hydrogen environment assisted cracking (HEAC) when exposed to aqueous environments. In Al-Zn-Mg-Cu alloys, overaged tempers are used to increase HEAC resistance at the expense of strength but overaging has little benefit in low copper alloys. However, the mechanism or ...
... PERFORMANCE OF ALUMINUM ALLOYS 1100, 3003 ... DIFFERENCES IN ALLOY PERFORMANCE. ... OF THE ALUMINUM ALLOYS IS OBSERVED ...
DTIC Science & Technology
... 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 ...
This goal of this research was to explain the effects of heat treatment, Cu content, and electrode potential (EApp) on short-transverse aqueous environment assisted cracking (EAC) in a precipitation hardened Al-Zn-Mg-(Cu) alloy. Substantial intergranular EAC susceptibility was observed in several underaged (UA) and peak aged (PA) tempers of AA ...
... 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 ...
... LOADING, MECHANICAL PROPERTIES, ALUMINUM ALLOYS, MOLYBDENUM ALLOYS, VANADIUM ALLOYS, TIN ALLOYS, STABILITY. ...
... ALUMINUM ALLOYS, MAGNESIUM ALLOYS, TITANIUM ALLOYS, COPPER ALLOYS, BERYLLIUM ALLOYS, STRUCTURAL COMPONENTS ...
... ALLOYS, *CORROSION RESISTANCE), (*STRESS CORROSION, ALUMINUM ALLOYS), SILVER ALLOYS, ZINC ALLOYS, MAGNESIUM ALLOYS. ...
... ALLOYS, BORON ALLOYS, POWDER METALLURGY, OXIDES, ALUMINUM COMPOUNDS, BORIDES, ALUMINUM ALLOYS, OXIDATION ...
... THE ALUMINUM ALLOYS 5052 AND ALCLAD (7072) 3003 ... FOR QUALIFYING ALUMINUM ALLOYS FOR THE ... AS A TUBING ALLOY WORTHY OF ...
... TREATMENT), CASTING ALLOYS, SILICON ALLOYS, MAGNESIUM ALLOYS, MANGANESE ALLOYS, BERYLLIUM ALLOYS, TITANIUM ALLOYS ...
... TITANIUM ALLOYS, ALUMINUM ALLOYS, VANADIUM ALLOYS, NIOBIUM ALLOYS, TANTALUM ALLOYS, TIN ALLOYS, ZIRCONIUM ALLOYS ...
