Results 101 to 110 of about 419,752 (350)

Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries [PDF]

Журнал нано- та електронної фізики, 2012
The paper describes a theoretical study of the Ostwald ripening of two-dimensional small-size precipitates of a newly formed phase at the grain boundary of finite thickness, taking into account the diffusion of impurity atoms from the grain interior to ...
A.V. Koropov
doaj  

A comparison of high temperature fatigue crack propagation in various sub-solvus heat treated turbine disc alloys

, 2007
The microstructure and fatigue performance of three sub-solvus heat treated nickel based disc superalloys for turbine disc applications are reported. The alloy variants studied are RR1000, N18 and Udimet 720 Low Interstitial (U720Li), with the latter ...
Everitt, S., Henderson, M.B., Pang, H.T., Reed, P.A.S., Starink, M.J., Wilcock, I.M.   +5 more
core   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source

Li-diffusion accelerates grain growth in intercalation electrodes: a phase-field study

, 2018
Grain boundary migration is driven by the boundary's curvature and external loads such as temperature and stress. In intercalation electrodes an additional driving force results from Li-diffusion. That is, Li-intercalation induces volume expansion of the
Balakrishna, Ananya Renuka, Carter, W. Craig, Chiang, Yet-Ming   +2 more
core   +1 more source

Wetting Effects at a Grain Boundary

Physical Review Letters, 2004
We consider a tier of weakened bonds along the center line of a two-dimensional Ising ferromagnet strip as a model of a grain boundary. When an interface traverses such a strip at an angle, whether or not there is a continuous pinning-depinning transition at subcritical temperature depends on this angle and the degree of bond weakening.
Douglas B. Abraham, Ville Mustonen, Ville Mustonen, A. J. Wood   +3 more
openaire   +4 more sources

Crystal‐Symmetry‐Driven Build Orientation and its Impact on the {110}<100> Goss Texture Formation and Mechanical Properties of Laser Powder Bed Fused AISI 316L

Advanced Engineering Materials, EarlyView.
This study explores a crystal‐symmetry‐based approach to optimize mechanical properties in laser powder bed fused AISI 316L with predominant {110}<100> Goss textures. By varying the build orientation, the microstructure can be tailored and the tensile properties optimized. The tilted build (T110) achieved the highest strength while preserving ductility,
Daniel Rainer, Jithin James Marattukalam, Dennis Karlsson, Přemysl Beran, Charles Hervoches, Gabriella Andersson, Prabhat Pant, Martin Sahlberg   +7 more
wiley   +1 more source

Essential structural and experimental descriptors for bulk and grain boundary conductivities of Li solid electrolytes

Science and Technology of Advanced Materials, 2020
We present a computational approach for identifying the important descriptors of the ionic conductivities of lithium solid electrolytes. Our approach discriminates the factors of both bulk and grain boundary conductivities, which have been rarely ...
Yen-Ju Wu, Takehiro Tanaka, Tomoyuki Komori, Mikiya Fujii, Hiroshi Mizuno, Satoshi Itoh, Tadanobu Takada, Erina Fujita, Yibin Xu   +8 more
doaj   +1 more source

REARRANGEMENTS IN THE SYSTEM OF GRAIN BOUNDARY DISLOCATIONS AND MIGRATION OF GRAIN BOUNDARIES

Le Journal de Physique Colloques, 1990
The dislocation structure and behaviour of grain boundaries in a low strained nickel alloy under slow and fast continuous heating was studied. It is established that the processes of grain boundary migration and dissociation of grain boundaries start (on a macroscale) not with the disappearance of electron microscopic contrast due to extrinsic grain ...
L.K. Fionova, M.F. Imayev
openaire   +3 more sources

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych, Chongchong Tang, Carsten Schroer, Björn Schäfer, Judith Jung, Michael Dürrschnabel, Ute Jäntsch, Bronislava Gorr   +7 more
wiley   +1 more source

MÖSSBAUER ANALYSIS OF GRAIN BOUNDARIES AS A FUNCTION OF THE GRAIN BOUNDARY STRUCTURE

Le Journal de Physique Colloques, 1979
Both polycrystalline and bicrystalline silver foils with a small amount of 119mSn sandwiched in the boundary were produced and the Mössbauer spectra were recorded. The preliminary result on small angle boundaries showed that the main spectrum position was near that of solid solution 119mSn and the line width was smaller than that of polycrystalline ...
Hideki Ichinose, Minoru Hashimoto, Y. Ishida   +2 more
openaire   +3 more sources