Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy
Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900°...
Ausführliche Beschreibung
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1969 |
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| Umfang: |
12 |
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| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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| Übergeordnetes Werk: |
in: Journal of materials science - 1966, 4(1969) vom: Apr., Seite 290-301 |
| Übergeordnetes Werk: |
volume:4 ; year:1969 ; month:04 ; pages:290-301 ; extent:12 |
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| 520 | |a Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. | ||
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(DE-627)NLEJ194710904 DE-627 ger DE-627 rakwb eng Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy 1969 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. Springer Online Journal Archives 1860-2002 Waldron, G. W. J. oth in Journal of materials science 1966 4(1969) vom: Apr., Seite 290-301 (DE-627)NLEJ188987134 (DE-600)2015305-3 1573-4803 nnns volume:4 year:1969 month:04 pages:290-301 extent:12 http://dx.doi.org/10.1007/BF00550397 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 4 1969 4 290-301 12 |
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(DE-627)NLEJ194710904 DE-627 ger DE-627 rakwb eng Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy 1969 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. Springer Online Journal Archives 1860-2002 Waldron, G. W. J. oth in Journal of materials science 1966 4(1969) vom: Apr., Seite 290-301 (DE-627)NLEJ188987134 (DE-600)2015305-3 1573-4803 nnns volume:4 year:1969 month:04 pages:290-301 extent:12 http://dx.doi.org/10.1007/BF00550397 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 4 1969 4 290-301 12 |
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(DE-627)NLEJ194710904 DE-627 ger DE-627 rakwb eng Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy 1969 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. Springer Online Journal Archives 1860-2002 Waldron, G. W. J. oth in Journal of materials science 1966 4(1969) vom: Apr., Seite 290-301 (DE-627)NLEJ188987134 (DE-600)2015305-3 1573-4803 nnns volume:4 year:1969 month:04 pages:290-301 extent:12 http://dx.doi.org/10.1007/BF00550397 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 4 1969 4 290-301 12 |
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(DE-627)NLEJ194710904 DE-627 ger DE-627 rakwb eng Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy 1969 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. Springer Online Journal Archives 1860-2002 Waldron, G. W. J. oth in Journal of materials science 1966 4(1969) vom: Apr., Seite 290-301 (DE-627)NLEJ188987134 (DE-600)2015305-3 1573-4803 nnns volume:4 year:1969 month:04 pages:290-301 extent:12 http://dx.doi.org/10.1007/BF00550397 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 4 1969 4 290-301 12 |
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(DE-627)NLEJ194710904 DE-627 ger DE-627 rakwb eng Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy 1969 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. Springer Online Journal Archives 1860-2002 Waldron, G. W. J. oth in Journal of materials science 1966 4(1969) vom: Apr., Seite 290-301 (DE-627)NLEJ188987134 (DE-600)2015305-3 1573-4803 nnns volume:4 year:1969 month:04 pages:290-301 extent:12 http://dx.doi.org/10.1007/BF00550397 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 4 1969 4 290-301 12 |
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Fluxoid pinning by second phases in a superconducting niobium-zirconium alloy |
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Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. |
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Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. |
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Abstract The effects of second phases on the critical currents of superconducting niobium-zirconium alloys containing a nominal 25 wt % zirconium have been determined by superconducting magnetisation experiments. Heat treatment of annealed and extruded materials in the temperature range 600 to 900° C leads to a cellular decomposition of the high temperature β structure into two isostructural phases, one niobium-rich (β Nb) and the other zirconium rich (β Zr), with an accompanying increase in critical current (at an average field of 20 kOe) up to twelve times the original value. Heat treatment of quenched tubes at 800 or 900° C produces precipitation on sub-boundaries prior to the cellular reaction, this being accompanied by an increase in critical current to at least thirteen times the original value. In this case, however, prolonged heating leads to a fall in critical current which it is suggested is an “overageing” effect. |
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