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Grain-boundary structure and precipitation in sensitized austenitic stainless steel
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Grain-boundary carbide precipitation and intergranular corrosion in sensitized austenite stainless steel were examined by transmission electron microscopy to clarify the effect of grainboundary structure on precipitation and corrosion as discussed by the authors.Abstract:
Grain-boundary carbide precipitation and intergranular corrosion in sensitized austenite stainless steel were examined by transmission electron microscopy to clarify the effect of grain-boundary structure on precipitation and corrosion The propensity to intergranular precipitation depends strongly on the grain-boundary structure Carbide precipitates tend to be detected at grain boundaries with higher Σ values or larger deviation angles (Δθ) from low-Σ coincidence site lattice misorientations The more ordered boundary requires a longer time for intergranular carbide precipitation and corrosion than less ordered or random boundariesread more
Citations
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Invited review article: Strategies and processes for high quality wire arc additive manufacturing
TL;DR: In this article, the authors identified the materials processing challenges in wire-arc additive manufacturing (WAAM), including high residual stresses, undesirable microstructures, and solute segregation and phase transformations at solidification.
Journal ArticleDOI
Twin-induced grain boundary engineering for 316 austenitic stainless steel
TL;DR: In this article, twin-induced grain boundary engineering utilizing optimized one-step thermomechanical processing with 3% pre-strain and subsequent annealing at 1240 K for 72h was introduced into type 316 austenitic stainless steel.
Journal ArticleDOI
Resistance to sensitization and intergranular corrosion through extreme randomization of grain boundaries
TL;DR: In this article, two grades of austenitic stainless steel, type 304 and 316L, were cold rolled to different reductions by unidirectional and by cross rolling, and the degree of sensitization was measured by the double loop electrochemical potentiokinetic reactivation (DL-EPR) test in both the alloys.
Journal ArticleDOI
Three dimensional observations and modelling of intergranular stress corrosion cracking in austenitic stainless steel
Thomas James Marrow,Laurent Babout,Andrey P. Jivkov,Paul Wood,Dirk Engelberg,Nicholas Stevens,Philip J. Withers,Roger C. Newman +7 more
TL;DR: In this article, three dimensional X-ray tomographic images of intergranular stress corrosion crack nucleation and growth in sensitised austenitic stainless steel provide evidence for the development of crack bridging ligaments, caused by the resistance of non-sensitised special grain boundaries.
Journal ArticleDOI
Corrosion resistance of friction stir welded 304 stainless steel
Seung Hwan C. Park,Yutaka S. Sato,Hiroyuki Kokawa,Kazutaka Okamoto,Satoshi Hirano,Masahisa Inagaki +5 more
TL;DR: In this paper, a friction stir welded 304 stainless steel was evaluated and the degree of sensitization was small in the heat affected zone, but the advancing side of the stir zone was corroded significantly because of the formation of the sigma phase.
References
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The structure of high-angle grain boundaries
TL;DR: In this paper, a superimposed dislocation network is proposed for the cubic system, which is a natural extension of previous dislocation models and models based on coincidence relationships, and explains many of the observed properties of grain boundaries.
Book
Fundamentals of grain and interphase boundary diffusion
TL;DR: Analytical Models of Grain Boundary Diffusion as mentioned in this paper have been proposed for determining grain boundary data, including diffusion along Dislocations and Small Angle Grain Boundaries, in thin films.
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A field ion microscope study of atomic configuration at grain boundaries
TL;DR: In this article, a model for high angle grain boundaries is presented and the effect of the orientation of the boundary plane is also given and it is shown that good fit regions are developed where the boundary follows the most densely packed planes in the coincidence lattice.