Results 321 to 330 of about 3,408,458 (372)

Microstructure evolution during irradiation

Journal of Nuclear Materials, 1994
Abstract Microstructural evolution in metals and alloys during energetic particle irradiation is reviewed with emphasis placed on the underlying defect reaction processes. The microstructures produced by electron irradiation with a high-voltage electron microscope, fusion-neutron irradiation with a D-T fusion neutron source, fission-neutron ...
openaire   +1 more source

Multiscale Modeling of Precipitate Microstructure Evolution

Physical Review Letters, 2002
We demonstrate how three "state-of-the-art" techniques may be combined to build a bridge between atomistics and microstructure: (1) first-principles calculations, (2) a mixed-space cluster expansion approach, and (3) the diffuse-interface phase-field model. The first two methods are used to construct the driving forces for a phase-field microstructural
V, Vaithyanathan, C, Wolverton, L Q, Chen   +2 more
openaire   +2 more sources

Microstructure evolution during selective laser melting of metallic materials: A review

Journal of laser applications, 2019
Selective laser melting (SLM) is an additive manufacturing technology that uses a laser beam to melt powder materials together layer by layer for solid part fabrication.
Xing Zhang, C. J. Yocom, B. Mao, Y. Liao
semanticscholar   +1 more source

Microscale Simulation of Martensitic Microstructure Evolution

Physical Review Letters, 2004
A new model for the evolution of multivariant martensitic microstructure in single crystals and polycrystals is developed. In contrast with Landau-Ginzburg models, which are limited in practice to nanoscale specimens, this new scale-free model is valid for length scales greater than 100 nm and without an upper bound.
Valery I, Levitas, Alexander V, Idesman, Dean L, Preston   +2 more
openaire   +2 more sources

Microstructural Evolution in Inhomogeneous Elastic Media

Journal of Computational Physics, 1997
A numerical method based on boundary integrals is developed to study the diffusional evolution of microstructures produced by solid state diffusional transformations in elastically stressed binary alloys in two dimensions. The precipitate and matrix phases are isotropic and linearly elastic.
Jou, H.-J., Leo, P. H., Lowengrub, J. S.
openaire   +2 more sources

Microstructural Evolution in Nanocrystalline Ni Coatings

Journal of Materials Research, 2002
Gas-atomized Ni powders were mechanically milled under liquid nitrogen and subsequently sprayed using a high-velocity oxygen-fuel thermal spraying system. The resultant coatings were evaluated using various analytical methods, including scanning electron microscopy (SEM), transmission electron microscopy, and atom probe field ion microscopy (APFIM ...
Lau, M., He, J., Melmed, A., Lusby, T., Schweinfest, R., Rühle, M., Lavernia, E.   +6 more
openaire   +2 more sources

Microstructural Evolution in Triaxial Porcelain

Journal of the American Ceramic Society, 2000
Microstructural evolution in a model triaxial porcelain was studied by X‐ray diffractometry and electron microscopy of quenched samples after firing for 3 h at 600°–1500°C. The clay component dehydroxylated to metakaolin at ∼550°C. Metastable sanidine formed from decomposition of the feldspar at >600°C and dissolved at >900°C.
Yaseen Iqbal, William Edward Lee
openaire   +1 more source

Microstructural evolution of buffers

Engineering Geology, 1999
A buffer consisting of blocks of compacted Na bentonite powder absorbs water by which the grains expand and exfoliate, yielding clay gels that occupy the voids between them. The expandability of the grains and thereby the bulk density and hydraulic conductivity depend on the density of the gel fillings and hence on the grain density.
openaire   +1 more source

Microstructural evolution and hardening parameters

Materials Science and Engineering: A, 2001
The evolution of dislocation structures in polycrystals with increasing strain is described within a framework of grain subdivision by dislocation boundaries and high angle boundaries. The evolving microstructures are characterized with emphasis on morphology and the changes in the misorientation angle across and spacing between deformation induced ...
Niels Hansen, X. Huang, D.A. Hughes
openaire   +1 more source

Nanoparticles Addition in AA2024 Aluminum/Pure Copper Plate: FSSW Approach, Microstructure Evolution, Texture Study, and Mechanical Properties

JOM, 2022
B. Bagheri, M. Alizadeh, S. E. Mirsalehi, A. Shamsipur, A. Abdollahzadeh   +4 more
semanticscholar   +1 more source