At the transition point, the spacings between the close-packed planes of the metastable fcc and hcp phases are the same. No amorphization is observed at the interfaces. This mechanically induced phase transition has been studied by x-ray diffraction, transmission electron microscopy, and differential...
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To simulate the HCP-FCC prismatic phase transition, a unit cell of 14√3a × a × 1.583a is selected in the present study, and the x, y, and z axes of the unit cell are set as the ⟨101¯0⟩, ⟨12¯10⟩, and ⟨0001⟩ directions, respectively. It should ...
Dislocation Induced FCC Twins at the HCP/FCC Interfaces in a Deformed Ti-5Al Alloy: Experiments and SimulationsTi-5at.%Al alloytwinning mechanismtransmission electron microscopymolecular dynamics simulationsdislocationThis paper proposes a new formation route for the face-centered cubic (FCC) twins at ...
and the HCP plate orientations within them are reversible with thermal cycling. During the heating of polished specimens in vacuo at a pressure of 10−4torr, parallel upset striations form on the surface within the subregions and exhibit the same orientations as the kappa phase platelets. ...
coldrolling fBcc) anduniaxial ofAZ3l texturedistributionsarein withthe compressionmagnesiumalloy(HCP).Thepredicted qualitativeagreement results. experimental crystalmodel;texture;additive decomposition Keywords:single decomposition;multiplicative of are two model,there different typecrystal typically 1Introduction ...
Face-centered cubic (FCC) and hexagonal close packed (HCP) lattice with Fm3m and P63/mmc symmetry, respectively, are the two generic types of close-packed lattice for the crystallographically equivalent spheres (i.e., the spheres having the same size). The difference between them lies in the...
We attempt to construct supersymmetric lattice theories using the staggered lattice fermions of Kogut and Susskind. Although we are able to construct latti... T Banks,P Windey - 《Nuclear Physics B》 被引量: 107发表: 1982年 Coherent dipole transport in a small grid of Rydberg atoms We calcula...
As the development and enhancement of alloys continues to thrive, recent work on a new class of alloys known as high-entropy alloys (HEA) has emerged. Comprised of at least five or more principal metals of the same atomic weight, HEA compositions lack the impurities that are often found in...
Answer to: If atoms are considered as contacting hard spheres, show that: a. The bcc lattice has a packing fraction of 0.68. b. The fcc and hcp...