...Narasi Sridhar Modern society relies heavily on complex, intertwined, physical infrastructures for their smooth functioning. Aging of the materials in the physical infrastructures is not necessarily related to service life, but to the increasing probability of failure—the hazard rate. This paper...

... Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan. 8 4 2015 19 8 2015 19 8 2015 © 2015 NACE International 2015 aging anticorrosion paint cross-arm materials electric transmission tower electrochemical impedance...

... in three-coat systems is reported as less extensive than for two-coat systems. ² aging corrosion internal stress protective coatings NACE International 2010 November 2008 April 2010 5 2010 Water immersion caused only minor changes in the stress level...

... for the cracking and flaking of protective coatings. Internal stresses were discussed in previous work, and adhesion will be discussed in the third and final paper of this series. Changes in mechanical properties from exposure offshore and from artificial aging in the laboratory have been studied. The individual...

... for specimens aged at 870°C for times longer than 5 h, but the recovery was not observed for the 700°C aged material. The drop in E_rcrev correlated with the precipitation and growth of Cr-depleted secondary austenite as well as a grain boundary chromium-depleted (GBCD) layer between a Cr-rich...

...J.H. Kim; R.G. Ballinger Thermal aging and consequent embrittlement of materials are ongoing issues in cast and duplex stainless steels. Spinodal decomposition is largely responsible for the well-known “475°C” embrittlement that results in drastic reductions in ductility and toughness in cast...

...C.-S. Huang; C.-C. Shih The effects of nitrogen and high-temperature aging on the uniform corrosion of duplex stainless steel (DSS) immersed in 60°C, 40% sulfuric acid (H₂SO₄) were studied. Under 800°C, regardless of nitrogen content aging at 0 to 1 h and 1 h to 10 h...

...W. Zhang; R.G. Buchheit Cathodic polarization curves were collected from chromate-conversion-coated 2024-T3 (UNS A92024) electrodes subject to prior aging under ambient indoor conditions. Selected exposures at elevated temperatures were made for comparison. Results showed that chromate conversion...

... corrosion and environmental tasks. October 1997 July 1998 1 2010 NACE International 1999 accelerated testing aging atmospheric corrosion salt spray weathering xenon light Salt spray was first used for corrosion testing in 1914. In 1939, the neutral salt spray test...

...-annealed or aged alloys in chlorides were examined using anodic polarization testing, critical pitting temperature measurements, and slow strain rate testing. Influences of W on degradation of mechanical properties of the alloys caused by precipitation of secondary phases during aging at 850°C were...

...R.B. Rebak; S.K. Srivastava General and stress corrosion cracking (SCC) behaviors of a Ni-Mo-Cr alloy were assessed in the mill-annealed and aged conditions. Performance of this Ni-25% Mo-8% Cr alloy (alloy 242 [proposed UNS N10242]) was compared to the performance of a Ni-Mo alloy (alloy B-3 [UNS...

... on microstructural, electrochemical, and SCC properties were examined. On aging, tungsten addition reduced the amount of α-phase precipitation, while enhancing precipitation of the χ phase. The beneficial effect of tungsten substitution for molybdenum in DSS was demonstrated on electrochemical polarization behaviors...

... in the short transverse direction under permanent immersion conditions. Strain rates were from 5 x 10^–8/s to 1 x 10^–4/s. Using substitute ocean water, Al 7050 was found sensitive and immune to environmentally assisted cracking in the peak-aged temper T651 and in the overaged temper T7351...

... a solution-treated base metal had a relatively lower pitting resistance. In contrast, aging preceded by solution treatment improved pitting resistance. Direct peak aging after welding improved pitting resistance of the weld metals, but it decreased resistance of the HAZ. Welding with relatively lower weld...

... mm (0.059 in.) thick and in solution-treated condition were full-penetration welded autogenously using the gas tungsten arc welding process (GTAW). Weldments were given one of two postweld heat treatments: direct aging and solution treatment + aging. Samples were aged at 480°C for 1 h, 510°C for 4 h...

...K. Ravindranath; S.N. Malhotra Although duplex stainless steels (SS) exhibit good performance in many severe corrosive environments, their corrosion resistance can be hampered by precipitation of chromium (Cr)- and molybdenum (Mo)-rich phases during heat treatments. The influence of aging...

... elongated microstructures generating higher forces. Aging treatment of the alloy also was a factor. Corrosion product forces were ranked in the order: under-aged > over-aged > peak-aged. High susceptibility of the over-aged temper in 8090 differed from that of conventional, precipitation-hardened Al...