Structural Aspects of Deformational Amorphization of Ti{sub 50}Ni{sub 25}Cu{sub 25} Crystalline Alloy under High Pressure Torsion
The evolution of the structure of the Ti50Ni25Cu25 crystalline alloy during high-pressure torsion at room temperature has been studied. The torsional moment variation curve as a function of the strain value was fixed in situ, which allowed directly observing the transition of the material from the c...
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Published in | Physics of the solid state Vol. 60; no. 6 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
15.06.2018
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Abstract | The evolution of the structure of the Ti50Ni25Cu25 crystalline alloy during high-pressure torsion at room temperature has been studied. The torsional moment variation curve as a function of the strain value was fixed in situ, which allowed directly observing the transition of the material from the crystalline state to the amorphous state during the HPT. It was found that the amorphization of the material in the course of the HPT begins on the grain boundaries and fragments of the crystalline phase. Amorphized boundaries form a “grain-boundary carcass” in the cells of which the high-defect nanocrystalline phase is formed. Growth of deformation leads to broadening of the “grain-boundary carcass,” loss of stability of the crystalline phase, and, as a consequence, to the phase transition “crystal → amorphous” state. |
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AbstractList | The evolution of the structure of the Ti50Ni25Cu25 crystalline alloy during high-pressure torsion at room temperature has been studied. The torsional moment variation curve as a function of the strain value was fixed in situ, which allowed directly observing the transition of the material from the crystalline state to the amorphous state during the HPT. It was found that the amorphization of the material in the course of the HPT begins on the grain boundaries and fragments of the crystalline phase. Amorphized boundaries form a “grain-boundary carcass” in the cells of which the high-defect nanocrystalline phase is formed. Growth of deformation leads to broadening of the “grain-boundary carcass,” loss of stability of the crystalline phase, and, as a consequence, to the phase transition “crystal → amorphous” state. |
Author | Sundeev, R. V. Shalimova, A. V. Glezer, A. M. Gorshenkov, M. V. Pechina, E. A. |
Author_xml | – sequence: 1 fullname: Sundeev, R. V. email: sundeev55@yandex.ru organization: Moscow Technological University (MIREA) (Russian Federation) – sequence: 2 fullname: Shalimova, A. V. – sequence: 3 fullname: Glezer, A. M. organization: Bardin Central Research Institute for Ferrous Metallurgy (Russian Federation) – sequence: 4 fullname: Pechina, E. A. organization: Ural Branch of Russian Academy of Sciences, Physical-Technical University (Russian Federation) – sequence: 5 fullname: Gorshenkov, M. V. organization: National Research Technological University (MISIS) (Russian Federation) |
BackLink | https://www.osti.gov/biblio/22770957$$D View this record in Osti.gov |
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Snippet | The evolution of the structure of the Ti50Ni25Cu25 crystalline alloy during high-pressure torsion at room temperature has been studied. The torsional moment... |
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SubjectTerms | ALLOYS AMORPHOUS STATE CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY COPPER COMPOUNDS DEFECTS DEFORMATION GRAIN BOUNDARIES LOSSES NANOSTRUCTURES NICKEL COMPOUNDS PHASE TRANSFORMATIONS STABILITY STRAINS TEMPERATURE RANGE 0273-0400 K TERNARY ALLOY SYSTEMS TITANIUM COMPOUNDS TORSION |
Title | Structural Aspects of Deformational Amorphization of Ti{sub 50}Ni{sub 25}Cu{sub 25} Crystalline Alloy under High Pressure Torsion |
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