Results 281 to 290 of about 14,324 (302)

Coherent equilibrium in alloys containing spherical precipitates

Acta Metallurgica et Materialia, 1995
Abstract Coherent equilibrium is investigated theoretically in alloys containing monodispersed spherical precipitates. The alloy system is subjected to a Dirichlet tessellation by constructing a Voronoi polyhedron around each particle, and for the purpose of calculation each polyhedron is approximated as a sphere. The basic unit of the microstructure
A.J. Ardell, A. Maheshwari
openaire   +1 more source

Equilibrium shapes of coherent precipitates near a surface

Mechanics of Materials, 2018
The shape stability of a two-dimensional precipitate embedded in a matrix has been theoretically investigated when it is strained due to an anisotropic lattice mismatch between the matrix and the precipitate. In the case of a semi-infinite matrix, the precipitate is found to align perpendicularly to the free-surface direction when both lattice ...
openaire   +2 more sources

Coherent precipitation of M2C carbides in AF1410 steel

Materials Science and Engineering: A, 1989
Abstract The effect of elastic coherency on the composition and stoichiometry of M 2 C carbide precipitates ( M ≡ Cr , Mo , Fe ) in AF1410 steel is analyzed utilizing thermodynamic conditions for mechanical, chemical and interfacial equilibrium between the ferrite (tempered martensite) and the M 2 C phase.
openaire   +1 more source

Spatial Coherence of Monthly Precipitation in the United States

Monthly Weather Review, 1982
Abstract Factor analysis and an orthogonal rotation to the varimax criterion are used to identify the synoptic-scale regions of the United States over which monthly precipitation amounts show the greatest spatial coherence. The regions are consistent with previously documented cyclone trajectories.
John E. Walsh, Michael B. Richman, David W. Allen   +2 more
openaire   +1 more source

On calculations of the crss of alloys containing coherent precipitates

Acta Metallurgica, 1968
Abstract Two recent estimates on the critical resolved shear stress of alloys containing coherent precipitates are critically compared. The differences between both estimates are discussed in detail. In both cases the interaction between dislocation and precipitates is assumed to occur via the elastic strain field surrounding the coherent particles ...
openaire   +1 more source

Semi-coherent precipitation of silicon nitride in silicon

Proceedings, annual meeting, Electron Microscopy Society of America, 1988
Implantation of nitrogen into silicon, followed by high-temperature annealing causes formation of silicon nitride. At high doses, continuous polycrystalline layers are formed, while at lower doses, discrete precipitates are formed. These precipitates show preferred orientation with the silicon matrix. This paper presents the results of characterization
openaire   +1 more source

Calculation of TEM Contrast of Small Coherent Precipitates

Physica Status Solidi (a), 1989
A new simple method to compute the image contrast of small coherent precipitates without strain contrast is proposed. The method is based on a perturbational expansion of the extra scattering due to the precipitate. Two approaches are possible – z-dependent and z-independent perturbation theory, which each have special advantages.
openaire   +1 more source

Precipitation hardening by coherent particles

Materials Science and Engineering, 1968
H. Gleiter, E. Hornbogen
openaire   +1 more source

Precipitation behavior of coherent nano-ordered particles in Fe-Mn-Al-Ni shape memory alloys with different Ni contents

Materials Characterization, 2022
Liqiu Yong, Yang Zuo, Huabei Peng
exaly  

Compositionally complex coherent precipitation‐strengthened high‐entropy alloys: a critical review

Rare Metals, 2022
Bo Xiao, Zengbao Jiao, T Yang
exaly