Grain boundary phases in bcc metals
WebJan 1, 2024 · The U.S. Department of Energy's Office of Scientific and Technical Information WebFeb 1, 1995 · In grain boundaries with a high segregation level the nature and content of the major element strongly vary with GB crystallographic parameters, depending on the orientation of the grain boundary plane. HREM studies of grain boundary structure do not reveal any intergranular glassy phase in the material. References (39) P.H. Pumphrey
Grain boundary phases in bcc metals
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WebJan 29, 2024 · Grain boundaries (GBs) can be treated as two-dimensional (2-D) interfacial phases (also called “complexions”) that can undergo interfacial phase-like transitions. As bulk phase diagrams and calculation of phase diagram (CALPHAD) methods serve as a foundation for modern materials science, we propose to extend them to GBs to have … WebFeb 7, 2024 · We use atomistic simulations to investigate grain boundary (GB) phase transitions in elemental body-centered cubic (bcc) metal tungsten. Motivated by recent modeling study of grain boundary phase transitions in [100] symmetric tilt boundaries in face-centered cubic (fcc) copper, we perform a systematic investigation of [100] and …
WebAbstract. We report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental bcc tungsten. While grain boundary structures created by the \gamma-surface method as a union of two perfect half crystals have been studied extensively, it is known that the method has limitations and does not … WebWe report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental bcc tungsten. While grain boundary structures …
WebApr 10, 2024 · In this study, we focus on two tilt symmetric grain boundaries (GBs) Σ5(210) and Σ5(310) commonly observed in the polycrystalline metals and alloys [].In order to establish MD models, two symmetric BCC Hf grains are first combined to construct a central GB (Fig. 1a). The lattice constant is taken as 3.431 Å, which is the average value of the … WebEstimation of grain boundary segregation enthalpy and its role in stable nanocrystalline alloy design. Grain boundary segregation provides a method for stabilization of nanocrystalline metals—an alloying element that will segregate to the boundaries can lower the grain boundary energy, attenuating the….
WebNov 18, 2024 · Abstract: We report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental bcc tungsten. While grain …
WebGrain boundary phases in bcc metals - Nanoscale (RSC Publishing) Maintenance work is planned for Wednesday 5th April 2024 from 09:00 to 10:30 (BST). During this time the performance of our website may be affected - searches may run slowly and some pages … sigmashield 1200 product data sheetWebDec 7, 2024 · In this review, the phenomenon of grain boundary (GB) wetting by the second solid phase is analyzed for the high entropy alloys (HEAs). Similar to the GB wetting by the liquid phase, the GB... the print plugWebMar 18, 2024 · The theory of grain boundary (the interface between crystallites, GB) structure has a long history 1 and the concept of GBs undergoing phase transformations was proposed 50 years ago 2, 3. The ... the print post newarkWebThis process is particularly convenient for achieving non-equilibrium microstructures in body-centered cubic (BCC) metals, which are not easily produced with nanocrystalline grain sizes through other SPD processes due to the lack of a close-packed slip system facilitating high deformation strains. the print pro sandwich maWebNov 30, 2024 · In practice, most components often receive impact loads during service. In order to ensure the service safety of components, impact toughness evaluation is essential. To the best of our knowledge, the previous studies were mainly focused on the quasi-static tensile deformation, and the impact toughness of bimodal grain structured metals have … the print projectWebWe report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental bcc tungsten. While grain boundary structures created … the print quarter chorleyWebSep 17, 2024 · The IGC samples consist of equiaxed nano-sized grains (15.4 ± 3 nm) as shown in Fig. 1a and exclusively of the BCC phase as detected by XRD and TEM (Supplementary Fig. 1 ). The IGC nanograined... the print post newark nj