Grain boundary phases in bcc metals
WebJul 1, 2024 · It is well known that grain boundaries (GBs) increase the electrical resistivity of metals due to their enhanced electron scattering. The resistivity values of GBs are determined by their... 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 …
Grain boundary phases in bcc metals
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WebThe grain boundaries separate variously-oriented crystal regions (polycrystalline) in which the crystal structures are identical. Figure 3(b) represents four grains of different … WebMar 16, 2024 · BCC HEAs can only deal with liquid-solid phase transformation by some processing technology, such as melt purification, homogenization, directional solidification (DS), powder metallurgy (PM) and additive manufacturing (AM).
WebApr 14, 2024 · In addition, the increase in the number of polygonal and quasi-polygonal ferrites in the top region of slow cooling, the formation of both phases associated with carbon diffusion, which allows bulk M-A components to form within the grain and at the boundary of polygonal and quasi-polygonal ferrites. WebKeywords: Grain boundaries; Grain boundary energy; bcc metals; Atomistic calculations 1. Introduction Because grain boundaries have a significant influence on the physical …
WebWe report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental bcc tungsten. While grain boundary structures created … 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.
WebOur hypothesis is that the increased grain boundary density will lead to low bubble formation and bubble damage in the grain matrices, but the effect of grain boundary density can also be phase-dependent (FCC vs. BCC). in situ transmission electron microscopy (TEM) coupled with helium bombardment was used to implant helium, and …
WebMar 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 ... dreams royal beach oysterWebWe use atomistic simulations to investigate grain boundary (GB) phase transitions in elemental body-centered cubic (bcc) metal tungsten. Motivated by recent modeling … dreams royal beach vs dreams macaoWebNov 17, 2024 · 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 … dreams royal beach resort mapWebMar 29, 2024 · We report a computational discovery of novel grain boundary structures and multiple grain boundary phases in elemental body-centered cubic (bcc) metals … dreams royal beach bavaroWebNov 1, 2024 · We predict structure and energy of low-angle (11¯0) pure twist grain boundaries (GBs) in five BCC transition metals (β-titanium, molybdenum, niobium, … dreams royal beach punta cana contactWebFeb 1, 2024 · We predict structure and energy of low-angle (1 1 ¯ 0) pure twist grain boundaries (GBs) in five BCC transition metals (β-titanium, molybdenum, niobium, … dreams salon and spaWebDec 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 wetting by the second solid phase can be incomplete (partial) or complete. In the former case, the second solid phase forms in the GB of a matrix, the … england single payer healthcare