... microscopy stainless steels heat treatment precipitates cyclic voltammetry martensite Influence of Excessive Nitrogen on Sensitization and Hardness of a Supermartensitic Stainless Steel Anderson B. Furtado*, Marcelo T. G. de Sampaio Pedro S. P. Garcia Jorge Luiz Cardoso Sergio S. M. Tavares Juan M...

...B.Y. Hu; H. Zhang; L.Y. Liu; D.B. Liu; A.H. Feng; D.L. Chen Corrosion behavior of friction stir welded 2195-T8 Al-Cu-Li alloy has been studied. Immersion and electrochemical open-circuit potential (OCP) test were applied. The microstructure and precipitates evolution in different zones were...

...-term aging) to form Cr-rich M₂₃C₆ carbides and sigma (σ) phase precipitate particles, respectively, on the grain boundaries. The thermal-aging heat treatments represent two limiting exposure conditions expected in-service for a fuel cladding in the Canadian Generation IV...

... precipitates seawater sensitization TABLE 1 Chemical Composition of As-Fabricated AA5083-H131 and AA5083-H116 (wt%) According to ASTM G67, a minimum of two specimens from each sample should be NAMLT tested. To perform NAMLT in the present study, two identical specimens from each sample...

...M.A. Steiner; S.R. Agnew Sensitization of marine grade AA5xxx aluminum alloys results from precipitation of the intermetallic β phase along grain boundaries and is typically assessed by the destructive ASTM G67 procedure. Recently it has been shown that a Johnson-Mehl-Avarami-Kolmogorov model...

... that the formation of a thin, dense external single-layer Cr₂O₃-based scale provides Alloy 33 with a promising corrosion resistance. However, the microstructure was not stable, as Cr-rich α-ferrite precipitates formed in the subsurface during the short exposure. The suitability of this alloy...

... nanocrystalline phosphorous precipitates segregation x-ray photoelectron spectroscopy Nanocrystalline materials show unique and often enhanced physical, chemical, and mechanical properties, which arise from their extremely small grain size in comparison with their conventional polycrystalline...

..., and such are observed. The localization of dissolution in grainboundary regions results from the presence of segregates or precipitates, but appropriate measurements are needed in this area if some details of the cracking mechanism are to be understood fully. June 1995 1 2010 NACE International 1996...

... with respect to its microstructural suroundings in artificially aged Aluminum Association (AA) 2090 (UNS A92090) (Al 2.1% Li-2.6% Cu) and preferential dissolution of T₁ precipitates strongly influenced localized corrosion behavior of the alloy. Subgrain boundaries in artificially aged AA 2090 were...

.... In addition, a specially designed type II DCB testing indicates that the SCC resistance of the HAZ is better than that of the base metal because of the re-overaging of the HAZ during welding. May 1992 July 1992 NACE International 1993 heat-affected zone precipitates stress corrosion...