...N. J. Henry Holroyd; Tim L. Burnett; John J. Lewandowski; Geoffrey M. Scamans The initiation of environment-induced cracking (EIC) in aluminum alloys typically dominates the total life during both service-life for structural applications and for smooth tensile test specimens subjected...

...Fabienne Peltier; Dominique Thierry Aluminum alloys are not immune to corrosion which can take the form of localized corrosion. Thus, the assessment of the corrosion behavior of aluminum alloys under atmospheric conditions is a major topic for the aerospace industry. One major difficulty...

...Munsu Kim; Luke N. Brewer; Gregory W. Kubacki This paper investigates the initiation and propagation of localized corrosion on cold-sprayed (CS) aluminum alloy 2024 and 7075 deposits. CS deposits on AA2024-T351 and AA7075-T651 substrates were produced with commercially available AA2024 and AA7075...

...Mahdi Jokar; Xiaolei Guo; G.S. Frankel Previous studies have shown how galvanic coupling susceptibility between stainless steel 316 or titanium alloy fasteners and coated aluminum alloy 7075-T6 depends on the chosen coating system and environmental factors such as relative humidity (RH...

...Priyanka Adapala; Niamh Hosking; Mark Nichols; G.S. Frankel Structures made from a combination of aluminum alloy (AA) and carbon fiber-reinforced plastic (CFRP) are susceptible to galvanic corrosion of the AA in harsh atmospheric conditions, such as might exist for closure panels in automotive...

... aluminum alloys anticorrosion coatings cathodic protection sacrificial coatings thermal spray coating P rotecting oil and natural gas infrastructure against internal corrosion is an important issue facing the oil and gas industry. Internal corrosion in natural gas pipelines is primarily due...

...C.F. Glover; M.L.C. Lim; J.R. Scully This study investigates the effect of surface treatment on the formation of Zr-based conversion coatings on AA7075-T6 automotive aluminum alloys and their resistance to filiform corrosion (FFC). Two different surface treatments were studied: (i) alkaline...

... substrates. ²³ The evolution of the development of the fabrication of rare earth coatings to viable commercial processes has, however, been slow. ²⁴ Much work has focused on aluminum alloys and a commercial process was developed for nonaerospace applications for aluminum alloys...

...C.F. Glover; M.L.C. Lim; G. Post; M. Mayo; J.R. Scully The performance of a trivalent chromium process (TCP) pretreatment conversion coating, applied to AA7075 aerospace aluminum alloys, for its ability to improve the filiform corrosion (FFC) of a polyvinyl-butyral coating, was studied...

...C.U. Chukwunonye; Nicholas J. Jones; Gabriela Petculescu Velocity and attenuation of shear and longitudinal sound waves were measured as a function of sensitization level in AA5083-H116 and AA5456-H116 aluminum alloys using two different techniques: resonant ultrasound spectroscopy (RUS) and pulse...

...Mengxia Liang; Robert E. Melchers; Igor A. Chaves Novel observations of changes in pitting morphology of 6060 aluminum alloys immersed for periods of 3 y, 3.5 y, and 4 y in temperate seawater are reported. They indicate that the initiation and propagation of pitting involve several different...

...Dannisa R. Chalfoun; Mariano A. Kappes; Mauricio Chocrón; Raul B. Rebak Aluminum alloy UNS A95052 (AA5052) is very attractive for desalination applications because of its good corrosion resistance in seawater at temperatures up to 125°C, low cost, good thermal conductivity, and non-toxicity of its...

...) and a potentiostatic electrochemical impedance spectroscopy scan. The impedance was measured at OCP from 100 kHz to 0.1 Hz with an amplitude of 0.01 V. The impedance was used to determine the resistance in the system and apply a post scan IR correction to all data. The aluminum alloys were anodically polarized...

... with identical coated samples exposed for 1 y and 2 y in the field, as well as identical samples exposed for 2,000 h using the standard ASTM B117 ¹⁴ test protocol. accelerated aluminum alloys atmospheric exposure chamber chromate coatings corrosion Fourier transform infrared...

...-hydrogen clusters; their mobility, hydrogen trapping, intergranular H, and vacancy segregation; and their impact on cohesion. aluminum alloys atomistic modeling grain boundary cohesion hydrogen embrittlement Aluminum magnesium alloys present an excellent resistance to corrosion that enables...

... agree well with experimental mass loss data. © 2016, NACE International 2016 aluminum alloys growth intergranular corrosion modeling nucleation secondary phase formation sensitization ^‡ Corresponding author. E-mail: [email protected] . 29 September 2015...

... TABLE 1 Chemical Composition of AA5083-H131 in wt% ^{57 ‡} Corresponding author. E-mail: [email protected] . 5083 aluminum alloys crack chemistry intergranular corrosion hydrogen embrittlement stress corrosion cracking Magnesium solid solution...

...R. Zhang; S.P. Knight; R.L. Holtz; R. Goswami; C.H.J. Davies; N. Birbilis The 5xxx series (Al-Mg-based) aluminum alloys suffer from intergranular corrosion and intergranular stress corrosion cracking when the alloy has become “sensitized.” Sensitization refers to insidious precipitation of β phase...

... aluminum alloys hydrogen embrittlement stress corrosion cracking Non-heat treatable wrought Al-Mg alloys used in modern ship structures require light weight, moderate strength, formability, weldability, fatigue, and corrosion resistance during sea-atmospheric exposure. ^{1 - 2} When...

... State University, East Lansing, MI 48824-1322. 24 5 2013 13 7 2013 13 7 2013 © 2013 NACE International 2013 aluminum alloys corrosion resistance physical and chemical structure trivalent chromium process coatings Aluminum alloys (AA6061-T6 [UNS A96061] ⁽¹...