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Results for “Al-Bi”

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2025

Imaging of dynamic processes in materials with a laser-wakefield accelerator

Betatron x rays generated from laser-wakefield accelerators are a promising source for imaging dynamic processes in materials. Here, we present proof-of-concept imaging of microstructural evolution in a hypermonotectic Al-Bi alloy, which consists of liquid Bi particles in a solid Al matrix. The images capture the elongation and fragmentation of Bi particles upon isothermal annealing. Because of the femtosecond time scale of the betatron source, the images are not subject to motion blur, whereas the accessibility of the source allows for studies of long-term processes such as annealing. The high-resolution data reveal that the evolution of Bi particles is mediated by an interplay of grain-boundary wetting and morphological instability, in stark contrast to an earlier proposal for (inverse) coarsening.

Alloys↗
DOE OSTI2020

Materials Data on AlBi by Materials Project

AlBi is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Al is bonded to four equivalent Bi atoms to form corner-sharing AlBi4 tetrahedra. All Al–Bi bond lengths are 2.79 Å. Bi is bonded to four equivalent Al atoms to form corner-sharing BiAl4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlBi3 by Materials Project

AlBi3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Al is bonded to twelve equivalent Bi atoms to form distorted AlBi12 cuboctahedra that share corners with twelve equivalent AlBi12 cuboctahedra, edges with twenty-four equivalent BiAl4Bi8 cuboctahedra, faces with six equivalent AlBi12 cuboctahedra, and faces with twelve equivalent BiAl4Bi8 cuboctahedra. All Al–Bi bond lengths are 3.46 Å. Bi is bonded to four equivalent Al and eight equivalent Bi atoms to form distorted BiAl4Bi8 cuboctahedra that share corners with twelve equivalent BiAl4Bi8 cuboctahedra, edges with eight equivalent AlBi12 cuboctahedra, edges with sixteen equivalent BiAl4Bi8 cuboctahedra, faces with four equivalent AlBi12 cuboctahedra, and faces with fourteen equivalent BiAl4Bi8 cuboctahedra. All Bi–Bi bond lengths are 3.46 Å.

36 MATERIALS SCIENCE↗