Results 51 to 60 of about 9,306 (283)

Calculation of Geometrically Necessary Dislocation Density within Planar Discrete Dislocation Plasticity: Application to Cyclic Loading

European Journal of Mechanics - A/Solids
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Y. Piao, N.G. Prastiti, S. Waheed, D.S. Balint   +3 more
openaire   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Additional hardening in harmonic structured materials by strain partitioning and back stress

Materials Research Letters, 2018
Deformation behavior of a harmonic structured material (HSM), core–shell 304L stainless steel, is investigated using micro-digital image correlation (micro-DIC). High strain-partitioning between core and shell is observed.
Hyung Keun Park, Kei Ameyama, Jongmyung Yoo, Hyunsang Hwang, Hyoung Seop Kim   +4 more
doaj   +1 more source

Density-based crystal plasticity : from the discrete to the continuum

, 2016
Because of the enormous range of time and space scales involved in dislocation dynamics, plastic modeling at macroscale requires a continuous formulation.
Appolaire, B., Bouar, Y. Le, Finel, A., Valdenaire, P. L.   +3 more
core   +3 more sources

Viewpoint: experimental recovery of geometrically necessary dislocation density in polycrystals

Scripta Materialia, 2003
Abstract Application of electron backscattering diffraction methods to recover estimates of the geometrically necessary dislocation density is described. The limitations of the method arising from the opacity of crystalline materials and the spatial and angular resolution limits are discussed.
B.S El-Dasher, B.L Adams, A.D Rollett
openaire   +2 more sources

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Dual heterogeneous structure facilitating an excellent strength-ductility combination in an additively manufactured multi-principal-element alloy

Materials Research Letters, 2022
The (FeCoNi)86Ti7Al7 multi-principal-element alloy with a dual heterogeneous microstructure was successfully fabricated by selective laser melting, exhibiting an excellent combination of strength (ultimate tensile strength, 1085.2 ± 23.2 MPa) and ...
Jing Huang, Wanpeng Li, Junyang He, Rui Zhou, Tzu-Hsiu Chou, Tao Yang, Chain-Tsuan Liu, Weidong Zhang, Yong Liu, Jacob C. Huang   +9 more
doaj   +1 more source

Continuum dynamics of the formation, migration and dissociation of self-locked dislocation structures on parallel slip planes

, 2016
In continuum models of dislocations, proper formulations of short-range elastic interactions of dislocations are crucial for capturing various types of dislocation patterns formed in crystalline materials.
Niu, Xiaohua, Xiang, Yang, Zhu, Yichao
core   +2 more sources

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source