Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys
Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of eithe...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Moberly, Warren J. [verfasserIn] Duerig, T.W. [verfasserIn] Proft, J.L. [verfasserIn] Sinclair, R. [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1991 |
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| Übergeordnetes Werk: |
Enthalten in: MRS online proceedings library - Warrendale, Pa. : MRS, 1998, 246(1991), 1 vom: 01. Okt., Seite 55-60 |
|---|---|
| Übergeordnetes Werk: |
volume:246 ; year:1991 ; number:1 ; day:01 ; month:10 ; pages:55-60 |
| Links: |
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| DOI / URN: |
10.1557/PROC-246-55 |
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SPR041826884 |
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| 520 | |a Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. | ||
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10.1557/PROC-246-55 doi (DE-627)SPR041826884 (SPR)PROC-246-55-e DE-627 ger DE-627 rakwb eng 670 ASE Moberly, Warren J. verfasserin aut Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys 1991 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. Duerig, T.W. verfasserin aut Proft, J.L. verfasserin aut Sinclair, R. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 246(1991), 1 vom: 01. Okt., Seite 55-60 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:246 year:1991 number:1 day:01 month:10 pages:55-60 https://dx.doi.org/10.1557/PROC-246-55 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 246 1991 1 01 10 55-60 |
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10.1557/PROC-246-55 doi (DE-627)SPR041826884 (SPR)PROC-246-55-e DE-627 ger DE-627 rakwb eng 670 ASE Moberly, Warren J. verfasserin aut Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys 1991 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. Duerig, T.W. verfasserin aut Proft, J.L. verfasserin aut Sinclair, R. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 246(1991), 1 vom: 01. Okt., Seite 55-60 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:246 year:1991 number:1 day:01 month:10 pages:55-60 https://dx.doi.org/10.1557/PROC-246-55 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 246 1991 1 01 10 55-60 |
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10.1557/PROC-246-55 doi (DE-627)SPR041826884 (SPR)PROC-246-55-e DE-627 ger DE-627 rakwb eng 670 ASE Moberly, Warren J. verfasserin aut Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys 1991 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. Duerig, T.W. verfasserin aut Proft, J.L. verfasserin aut Sinclair, R. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 246(1991), 1 vom: 01. Okt., Seite 55-60 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:246 year:1991 number:1 day:01 month:10 pages:55-60 https://dx.doi.org/10.1557/PROC-246-55 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 246 1991 1 01 10 55-60 |
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10.1557/PROC-246-55 doi (DE-627)SPR041826884 (SPR)PROC-246-55-e DE-627 ger DE-627 rakwb eng 670 ASE Moberly, Warren J. verfasserin aut Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys 1991 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. Duerig, T.W. verfasserin aut Proft, J.L. verfasserin aut Sinclair, R. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 246(1991), 1 vom: 01. Okt., Seite 55-60 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:246 year:1991 number:1 day:01 month:10 pages:55-60 https://dx.doi.org/10.1557/PROC-246-55 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 246 1991 1 01 10 55-60 |
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10.1557/PROC-246-55 doi (DE-627)SPR041826884 (SPR)PROC-246-55-e DE-627 ger DE-627 rakwb eng 670 ASE Moberly, Warren J. verfasserin aut Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys 1991 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. Duerig, T.W. verfasserin aut Proft, J.L. verfasserin aut Sinclair, R. verfasserin aut Enthalten in MRS online proceedings library Warrendale, Pa. : MRS, 1998 246(1991), 1 vom: 01. Okt., Seite 55-60 (DE-627)57782046X (DE-600)2451008-7 1946-4274 nnns volume:246 year:1991 number:1 day:01 month:10 pages:55-60 https://dx.doi.org/10.1557/PROC-246-55 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 AR 246 1991 1 01 10 55-60 |
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Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys |
| abstract |
Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. |
| abstractGer |
Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. |
| abstract_unstemmed |
Abstract Third element additions to TiNi provide a wide range of modifications of its shape memory properties. The advantages of Cu additions are to provide a more narrow hysteresis, less sensitivity to the Ti::Ni(+Cu) ratio of the temperature at which martensite starts to form ($ M_{s} $), a larger strength differential between the austenite and martensite phases, and superior fatigue resistance. The substitution of a few atomic percent Cu for Ni does not significantly alter the crystal structure of either the cubic B2 austenite nor the monoclinic B19′ martensite phases; however, the addition of greater than 10% Cu results in an orthorhombic B19 martensite phase. For the case of 10% Cu, a two-step martensitic transformation occurs upon cooling, with the cubic austenite transforming to the orthorhombic B19 martensite and subsequently to the monoclinic B19′ martensite. As a result of this two-step crystallographic transformation, material properties such as resistivity and shape change also exhibit a two-step transformation. In situ transmission electron microscopy heating and cooling experiments are used to observe the two-step martensitic transformation and to establish an orientation relationship between the B19 orthorhombic and the B19′ monoclinic structures. Strain vs temperature $ M_{s} $ tests establish the relative shape changes associated with both the cubic-to-orthorhombic transformation and the orthorhombic-to-monoclinic transformation. Similar $ M_{s} $ tests, where an applied load is removed during the transformation, establishes a crystallographic dependence between the two shape changes. Whereas binary TiNi is “trained” to undergo a specific shape change, this ternary TiNiCu alloy has a “natural” direction associated with the second step of its shape change. |
| collection_details |
GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_2005 |
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1 |
| title_short |
Two - Step Martensitic Transformations in TiNi(10% Cu) Shape Memory Alloys |
| url |
https://dx.doi.org/10.1557/PROC-246-55 |
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| author2 |
Duerig, T.W. Proft, J.L. Sinclair, R. |
| author2Str |
Duerig, T.W. Proft, J.L. Sinclair, R. |
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57782046X |
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| doi_str |
10.1557/PROC-246-55 |
| up_date |
2024-07-03T23:47:54.343Z |
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