Cluster-packing geometry for Al-based F-type icosahedral alloys

Icosahedral phase stabilities in Al-Cu-Ru alloys.

Discrete Tomography of F-type Icosahedral Model Sets

We address the problem of uniquely reconstructing F-type icosahedral quasicrystals from few images produced by quantitative high resolution transmission electron microscopy and explain recent results in the discrete tomography of these sets.

Dislocation–solute cluster interaction in Al–Mg binary alloys

The close-range interaction of dislocations and solute clusters in the Al–Mg binary system is studied by means of atomistic simulations. We evaluate the binding energy per unit length of dislocations to the thermodynamically stable solute atmospheres that form around their cores, at various temperatures and average solid solution concentrations. A measure of the cluster size that renders linear...

NEUTRON DIFFRACTION STUDIES OF THE ICOSAHEDRAL PHASE OF Al-Mn ALLOYS

Powder neutron diffraction studies were performed on three icosahedral alloys of the aluminum manganese system containing 27, 30. and 34 weight percent manganese. All peaks were found at the angles consistent with the icosahedral indexing with a six-dimensional cubic lattice parameter of approximately 0.65 nm that decreased with increasing Mn content. The relative intensities differ significant...

Icosahedral Alloys : Phase Purity and Phason Strains

We present a survey of x-ray and electron diffraction studies of Aluminumn Metal alloys. The icosahedral phase is found in A1 alloyed with Mn, Cr, V, Mo, Ru, W, and Re. The effect of adding small amounts of Si and Ru to the binary alloys is discussed. We review the advantages and disadvantages of various indexing schemes. Distortions of electron diffraction pictures are described in terms of ph...