Search Results - "Dislocation nucleation"

Borrowed dislocations for ductility in ceramics.

Authors: Dong, L. R. Zhang, J. Li, Y. Z. et al.

Source: Science (pre-March 2025). 7/26/2024, Vol. 385 Issue 6707, p422-427. 6p. 5 Diagrams.

Dislocation Substructure Evolution and Damage Accumulation in Large-Grained Homogenized and Fine-Grained Hot-Rolled Superni 625 During LCF at 298 K and 973 K.

Authors: Godasu, Ashwin Kumar Chahar, Sonika Kumar, Atul et al.

Source: Metallurgical & Materials Transactions. Part A. Aug2025, Vol. 56 Issue 8, p2834-2852. 19p.

Subjects: Strains & stresses (Mechanics), Dislocation nucleation, Fatigue cracks, Fatigue life, Alloy fatigue

An investigation of deformation mechanisms for grain size strengthening using molecular dynamics.

Authors: Costa, Verenice A. Kawasaki, Megumi Branicio, Paulo S. et al.

Source: Journal of Materials Science. Jul2026, Vol. 61 Issue 27, p19627-19650. 24p.

Subjects: Grain refinement, Dislocation nucleation, Molecular dynamics, Aluminum crystals, Deformations (Mechanics), Stress concentration

Coupled electromigration–nanoindentation study on dislocation nucleation in SrTiO3.

Authors: Okafor, Chukwudalu Sayyadi‐Shahraki, Ahmad Bruns, Sebastian et al.

Source: Journal of the American Ceramic Society. Oct2025, Vol. 108 Issue 10, p1-13. 13p.

Fracture Behavior of Twin Boundaries in Pure Titanium Under Biaxial Loading.

Authors: Zhou, Binbin Zhou, Liangfu Dai, Xiang et al.

Source: Metals (2075-4701); Jun2026, Vol. 16 Issue 6, p682, 20p

Molecular Dynamics Simulation of Effect of Grain Boundaries on Mechanical Properties and Deformation Mechanism of M50NiL Steel.

Authors: Li, Changchang Li, Bo Yang, Maosheng et al.

Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Jul2025, Vol. 77 Issue 7, p5112-5125. 14p.

Subjects: Face centered cubic structure, Dislocation nucleation, Deformations (Mechanics), Molecular dynamics, Crystal grain boundaries

Nanoindentation and deformation behaviors of α‐Al2O3: A molecular dynamic study.

Authors: Xu, Qinqin Goda, Ibrahim Zhang, Yanming et al.

Source: Journal of the American Ceramic Society. May2025, Vol. 108 Issue 5, p1-9. 9p.

Subjects: Dislocation nucleation, Ion bombardment, Molecular dynamics, Aluminum oxide

Molecular dynamics study on plastic deformation and spallation failure of dual-phase FeCrNi medium-entropy alloy under shock loading.

Authors: Zhou, Nengyu Zhang, YiWei Zhang, RuiZhi et al.

Source: European Physical Journal: Special Topics. Jun2026, p1-13. 13p.

Hillock formation on high-temperature annealed AlN templates due to dislocation nucleation at AlON particles.

Authors: Lachowski, A. Remmele, T. Kwasniewski, A. et al.

Source: Applied Physics Letters. 5/18/2025, Vol. 128 Issue 20, p1-7. 7p.

Atomic-scale study on the deformation mechanism of nanofabrication in nickel-based single-crystal superalloys embedded with NbC particles.

Authors: Song, Bo Shi, Wentao Lu, Qiang et al.

Source: Applied Physics A: Materials Science & Processing. Apr2025, Vol. 131 Issue 4, p1-15. 15p.

Subjects: Dislocation nucleation, Precipitation (Chemistry), Atomic displacements, Stress concentration, Molecular dynamics

Micro-mechanisms of shear deformation during high-pressure torsion of equiatomic FeMnNi medium entropy alloy.

Authors: Jha, Saumya Ranjan Gurao, N. P. Biswas, Krishanu

Source: Journal of Materials Science. Apr2025, Vol. 60 Issue 15, p6688-6714. 27p.

Subjects: Dislocation nucleation, Shear (Mechanics), Crystal grain boundaries, Grain refinement, Strain rate

The strengthening mechanisms and incipient plasticity of additively manufactured biomedical refractory high entropy alloys.

Authors: Liu, Changxi Wang, Liqiang Luo, Miao et al.

Source: Virtual & Physical Prototyping. Dec2025, Vol. 20 Issue 1, p1-14. 14p.

Subjects: Strengthening mechanisms in solids, Dislocation nucleation, Direct metal laser sintering, Nanomechanics, Material plasticity, High-entropy alloys, Microstructure

Atomistic investigation on the correlation between shot peening impact energy and grain microstructure.

Authors: Dong, Hongtao Tang, Jinyuan Zhang, Jinghua et al.

Source: Journal of Materials Science. Nov2025, Vol. 60 Issue 44, p21952-21983. 32p.

Subjects: Shot peening, Dislocation nucleation, Crystal structure, Material plasticity, Residual stresses, Kinetic energy, Molecular dynamics

Using in situ UO2 bicrystal sintering to understand grain boundary dislocation nucleation kinetics and creep.

Authors: Dillon, Shen J. Finkeldei, Sarah C. Lang, Eric et al.

Source: Journal of the American Ceramic Society. Oct2024, Vol. 107 Issue 10, p6701-6714. 14p.

Subjects: Dislocation nucleation, Uranium compounds, Rate of nucleation, Transmission electron microscopy, Uraninite, Crystal grain boundaries

Tailoring structural, mechanical, and electronic properties of (Ti0.25Ta0.25Zr0.25Nb0.25-xLax)C high-entropy carbide ceramics via rare-earth La incorporation: A comprehensive first-principles study.

Authors: Wang, Zhipeng Yu, Zhaowen Zhang, Linkun et al.

Source: Ceramics International. Sep2025:Part A, Vol. 51 Issue 21, p33721-33730. 10p.

Subjects: Dislocation nucleation, Shear (Mechanics), Electron delocalization, Heat of formation, Vickers hardness

High strain rate compressive deformation behavior of nickel microparticles.

Authors: Bellón, Bárbara Bhaskar, Lalith Kumar Brink, Tobias et al.

Source: Materials Today. Aug2025, Vol. 87, p90-102. 13p.

Subjects: Mechanical properties of metals, Dislocation nucleation, Microparticles, Nickel films, Molecular dynamics, Heterogenous nucleation

Coupled electromigration–nanoindentation study on dislocation nucleation in SrTiO3.

Authors: Okafor, Chukwudalu Sayyadi‐Shahraki, Ahmad Bruns, Sebastian et al.

Source: Journal of the American Ceramic Society. Oct2025, Vol. 108 Issue 10, p1-13. 13p.

Subjects: Dislocation nucleation, Strontium titanate, Mechanical behavior of materials, Oxygen vacancy, Oxide ceramics, Electrodiffusion, Dislocations in crystals, Nanoindentation

Indentation size effect in 2nd and 3rd generation advanced intermetallic TiAl alloys: theoretical and experimental estimation of dislocation density.

Authors: Nath, Prekshya Bhattacharjee, Amit Sen, Indrani

Source: Journal of Materials Science. Feb2024, Vol. 59 Issue 7, p3066-3086. 21p.

Subjects: Dislocation density, Dislocation nucleation, Heterogenous nucleation, Aerospace industries, Automobile industry, Nanoindentation

Effects of Temperature, Stoichiometric Ratio, and Crystal Orientation on the Nanoindentation Response of ZrC: A Molecular Dynamics Study.

Authors: Liu, Guiyu Zheng, Hongya Deng, Fugen et al.

Source: Materials (1996-1944). Jun2026, Vol. 19 Issue 12, p2581. 23p.

Investigation on the Tension–Compression Asymmetry of CoCrFeNiAl High-Entropy Alloy Under the Influence of Twinning Boundary Spacing.

Authors: Tang, Qiaoyun Zhi, Youran Zhang, Feng et al.

Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Dec2023, Vol. 75 Issue 12, p5527-5536. 10p.

Subjects: Twin boundaries, Dislocation nucleation, Strain rate, Crystal grain boundaries, Molecular dynamics