Mechanical behaviour of copper 15% volume niobium microcomposite wires
Cu-Nb microcomposites are attractive in magnet pulsed field technology applications due to their anomalous mechanism of mechanical strength and high electrical conductivity. In this sense, recently it was conceived the use of Cu 15% vol. Nb wires to operate as a high tensile strength cable for a dia...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2001-01-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000200015 |
| _version_ | 1818517612339920896 |
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| author | Marcello Filgueira José Nilson F. de Holanda Ruben Rosenthal Daltro G. Pinatti |
| author_facet | Marcello Filgueira José Nilson F. de Holanda Ruben Rosenthal Daltro G. Pinatti |
| author_sort | Marcello Filgueira |
| collection | DOAJ |
| description | Cu-Nb microcomposites are attractive in magnet pulsed field technology applications due to their anomalous mechanism of mechanical strength and high electrical conductivity. In this sense, recently it was conceived the use of Cu 15% vol. Nb wires to operate as a high tensile strength cable for a diamond cutting tool (diamond wires) for marble and granite slabbing. The multifilamentary Cu 15% vol. Nb composite was obtained using a new processing route, starting with niobium bars bundled into copper tubes, without arc melting. Cold working techniques, such as swaging and wire drawing, combined with heat treatments such as sintering and annealing, and tube restacking were employed. The tensile property of the composite was measured as a function of the niobium filaments dimensions and morphology into the copper matrix, in the several processing steps. An ultimate tensile strength (UTS) of 960 MPa was obtained for an areal reduction (R = Ao/A, with Ao-initial cross section area, and A-final cross section area) of 4x10(8) X, in which the niobium filaments reached thickness less than 20 nm. The anomalous mechanical strength increase is attributed to the fact that the niobium filaments acts as a barrier to copper dislocations. |
| first_indexed | 2024-12-11T00:58:32Z |
| format | Article |
| id | doaj.art-0e9c207738d649a5b4624843780f6bb1 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-11T00:58:32Z |
| publishDate | 2001-01-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-0e9c207738d649a5b4624843780f6bb12022-12-22T01:26:23ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392001-01-014212713110.1590/S1516-14392001000200015Mechanical behaviour of copper 15% volume niobium microcomposite wiresMarcello FilgueiraJosé Nilson F. de HolandaRuben RosenthalDaltro G. PinattiCu-Nb microcomposites are attractive in magnet pulsed field technology applications due to their anomalous mechanism of mechanical strength and high electrical conductivity. In this sense, recently it was conceived the use of Cu 15% vol. Nb wires to operate as a high tensile strength cable for a diamond cutting tool (diamond wires) for marble and granite slabbing. The multifilamentary Cu 15% vol. Nb composite was obtained using a new processing route, starting with niobium bars bundled into copper tubes, without arc melting. Cold working techniques, such as swaging and wire drawing, combined with heat treatments such as sintering and annealing, and tube restacking were employed. The tensile property of the composite was measured as a function of the niobium filaments dimensions and morphology into the copper matrix, in the several processing steps. An ultimate tensile strength (UTS) of 960 MPa was obtained for an areal reduction (R = Ao/A, with Ao-initial cross section area, and A-final cross section area) of 4x10(8) X, in which the niobium filaments reached thickness less than 20 nm. The anomalous mechanical strength increase is attributed to the fact that the niobium filaments acts as a barrier to copper dislocations.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000200015Cu 15% vol. Nbwire drawingheat treatmentsanomalous tensile strength |
| spellingShingle | Marcello Filgueira José Nilson F. de Holanda Ruben Rosenthal Daltro G. Pinatti Mechanical behaviour of copper 15% volume niobium microcomposite wires Materials Research Cu 15% vol. Nb wire drawing heat treatments anomalous tensile strength |
| title | Mechanical behaviour of copper 15% volume niobium microcomposite wires |
| title_full | Mechanical behaviour of copper 15% volume niobium microcomposite wires |
| title_fullStr | Mechanical behaviour of copper 15% volume niobium microcomposite wires |
| title_full_unstemmed | Mechanical behaviour of copper 15% volume niobium microcomposite wires |
| title_short | Mechanical behaviour of copper 15% volume niobium microcomposite wires |
| title_sort | mechanical behaviour of copper 15 volume niobium microcomposite wires |
| topic | Cu 15% vol. Nb wire drawing heat treatments anomalous tensile strength |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000200015 |
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