Results 51 to 60 of about 58,697 (194)

Analysis of acoustic emission during the melting of embedded indium particles in an aluminum matrix: a study of plastic strain accommodation during phase transformation

, 2012
Acoustic emission is used here to study melting and solidification of embedded indium particles in the size range of 0.2 to 3 um in diameter and to show that dislocation generation occurs in the aluminum matrix to accommodate a 2.5% volume change.
A. Galeski, A. Wolfenden, A.K. Malhotra, A.K. Malhotra, A.K. Malhotra, A.L. Purvis, B. Guérard von, B.I. Voronenko, D.C. Ahn, D.C. Aken Van, David C. Van Aken, F. Kroupa, G.M. Vyletel, I. Gurrappa, J. Tao, J.L. Murray, J.W. Edington, L. Bourgeois, L.E. Murr, M.D. Sangid, M.H. Loretto, M.M. Kuba, Michael M. Kuba, P.C. Clapp, P.M. Mummery, P.S. Dobson, R. Vandervoort, R.Z. Valiev, S.M.C. Bohemen Van, S.M.C. Bohemen Van, S.M.C. Bohemen Van, T.Y. Tan, V.B. Vorontsov, Y. Oshima   +33 more
core   +1 more source

High dislocation density of tin induced by electric current

AIP Advances, 2015
A dislocation density of as high as 1017 /m2 in a tin strip, as revealed by high resolution transmission electron microscope, was induced by current stressing at 6.5 x 103 A/ cm2. The dislocations exist in terms of dislocation line, dislocation loop, and
Yi-Han Liao, Chien-Lung Liang, Kwang-Lung Lin, Albert T. Wu   +3 more
doaj   +1 more source

TEM Observation of Loops Decorating Dislocations and Resulting Source Hardening of Neutron-Irradiated Fe-Cr Alloys

Metals, 2020
Several open issues remain concerning the quantitative understanding of irradiation hardening in high-Cr steels. One of these issues is addressed here by correlating yield points that are observed in stress-strain curves with dislocation decoration ...
Frank Bergner, Mercedes Hernández-Mayoral, Cornelia Heintze, Milan J. Konstantinović, Lorenzo Malerba, Cristelle Pareige   +5 more
doaj   +1 more source

Trapping and de-trapping behavior of hydrogen isotopes in <100> interstitial dislocation loops of tungsten

Nuclear Fusion
In fusion reactors, plasma-facing materials (PFMs) work under a complex irradiation environment. A lot of irradiation defects will be generated in tungsten (W), primary candidate for PFMs, leading to a substantial amount of hydrogen fuel retention. Among
Fei Sun, Qihang Liu, Baichuan Xu, Xiao-Chun Li, Jipeng Zhu, Dahuan Zhu, Hai-Shan Zhou, Hongxiang Zong, Lai-Ma Luo, Yasuhisa Oya, Yucheng Wu   +10 more
doaj   +1 more source

An Exactly Solvable Phase-Field Theory of Dislocation Dynamics, Strain Hardening and Hysteresis in Ductile Single Crystals

, 2001
An exactly solvable phase-field theory of dislocation dynamics, strain hardening and hysteresis in ductile single crystals is developed. The theory accounts for: an arbitrary number and arrangement of dislocation lines over a slip plane; the long-range ...
A.M. Cuitiño, Ashby, Baskes, Bodner, Clarke, Cuitiño, Ghoniem, Hardikar, Hirth, Juan, Juan, Kane, Kinderlehrer, Kröner, Livingston, M. Koslowski, M. Ortiz, Mathai, Mura, Nye, Ortiz, Ortiz, Ortiz, Ortiz, Ortiz, Ortiz, Phillips, Radovitzky, Rice, Rockafellar, Rodney, Shenoy, Sun, Wang, Xu, Xu, Yamaguchi   +36 more
core   +2 more sources

In-situ TEM investigation of zirconium alloy under Kr+ single-beam and Kr+-He+ dual-beam synergetic irradiation

Nuclear Engineering and Technology
The in-situ TEM irradiation experiments of zirconium alloy were conducted at 573 K, 673 K, and 773 K utilizing a 400 keV Kr + single beam and a 400 keV Kr+ and 30 keV He + dual beam.
Zhen Wang, Qing-Xue Yan, Zhong-Qiang Fang, Chen-Yang Lu   +3 more
doaj   +1 more source

Anatomic double-bundle medial patellofemoral ligament reconstruction with aperture fixation using an adjustable-length loop device: a 2-year follow-up study

BMC Musculoskeletal Disorders, 2018
Background To assess the clinical availability of an adjustable-length loop device for use in the double-bundle technique with aperture fixation at the patella and femur during anatomic double-bundle medial patellofemoral ligament reconstruction (DB ...
Jae-Ang Sim, Jin-Kyu Lim, Byung Hoon Lee
doaj   +1 more source

Orientation-dependent deformation mechanisms of bcc niobium nanoparticles

, 2017
Nanoparticles usually exhibit pronounced anisotropic properties, and a close insight into the atomic-scale deformation mechanisms is of great interest.
Bian, J. J., Niu, X. R., Wang, G. F., Yang, L.   +3 more
core   +1 more source

Material Removal Mechanism and Evolution of Subsurface Defects during Nanocutting of Monocrystalline Cu

Nanomaterials and Nanotechnology, 2023
Multigroup large-scalenanocutting models of monocrystalline Cu were established by molecular dynamics simulations to investigate the influence of cutting parameters on the material removal mechanism.
Bing Liu, Yurong Wang, Haijie Yang
doaj   +1 more source

Dislocations in uniaxial lamellar phases of liquid crystals, polymers and amphiphilic systems

, 1995
Dislocations in soft condensed matter systems such as lamellar systems of polymers, liquid crystals and ternary mixtures of oil, water and surfactant (amphiphilic systems) are described in the framework of continuum elastic theory.
Holyst, R., Oswald, P.
core   +1 more source