Ledges and grooves at γ/γ′ interfaces of single crystal superalloys
In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high tem...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Parsa, A.B. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
13 |
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| Übergeordnetes Werk: |
Enthalten in: Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. - Chauvet, Marcelle ELSEVIER, 2022, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:90 ; year:2015 ; day:15 ; month:05 ; pages:105-117 ; extent:13 |
| Links: |
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| DOI / URN: |
10.1016/j.actamat.2015.02.005 |
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| Katalog-ID: |
ELV023892102 |
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| 520 | |a In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. | ||
| 520 | |a In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. | ||
| 650 | 7 | |a Ni-base single crystal superalloys |2 Elsevier | |
| 650 | 7 | |a Interface dislocations |2 Elsevier | |
| 650 | 7 | |a Grooves |2 Elsevier | |
| 650 | 7 | |a Rafting |2 Elsevier | |
| 650 | 7 | |a γ/γ′ interfaces |2 Elsevier | |
| 700 | 1 | |a Wollgramm, P. |4 oth | |
| 700 | 1 | |a Buck, H. |4 oth | |
| 700 | 1 | |a Kostka, A. |4 oth | |
| 700 | 1 | |a Somsen, C. |4 oth | |
| 700 | 1 | |a Dlouhy, A. |4 oth | |
| 700 | 1 | |a Eggeler, G. |4 oth | |
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10.1016/j.actamat.2015.02.005 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV023892102 (ELSEVIER)S1359-6454(15)00101-9 DE-627 ger DE-627 rakwb eng 330 VZ Parsa, A.B. verfasserin aut Ledges and grooves at γ/γ′ interfaces of single crystal superalloys 2015transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. Ni-base single crystal superalloys Elsevier Interface dislocations Elsevier Grooves Elsevier Rafting Elsevier γ/γ′ interfaces Elsevier Wollgramm, P. oth Buck, H. oth Kostka, A. oth Somsen, C. oth Dlouhy, A. oth Eggeler, G. oth Enthalten in Elsevier Science Chauvet, Marcelle ELSEVIER Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. 2022 Amsterdam [u.a.] (DE-627)ELV009239057 volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 https://doi.org/10.1016/j.actamat.2015.02.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 90 2015 15 0515 105-117 13 |
| spelling |
10.1016/j.actamat.2015.02.005 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV023892102 (ELSEVIER)S1359-6454(15)00101-9 DE-627 ger DE-627 rakwb eng 330 VZ Parsa, A.B. verfasserin aut Ledges and grooves at γ/γ′ interfaces of single crystal superalloys 2015transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. Ni-base single crystal superalloys Elsevier Interface dislocations Elsevier Grooves Elsevier Rafting Elsevier γ/γ′ interfaces Elsevier Wollgramm, P. oth Buck, H. oth Kostka, A. oth Somsen, C. oth Dlouhy, A. oth Eggeler, G. oth Enthalten in Elsevier Science Chauvet, Marcelle ELSEVIER Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. 2022 Amsterdam [u.a.] (DE-627)ELV009239057 volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 https://doi.org/10.1016/j.actamat.2015.02.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 90 2015 15 0515 105-117 13 |
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10.1016/j.actamat.2015.02.005 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV023892102 (ELSEVIER)S1359-6454(15)00101-9 DE-627 ger DE-627 rakwb eng 330 VZ Parsa, A.B. verfasserin aut Ledges and grooves at γ/γ′ interfaces of single crystal superalloys 2015transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. Ni-base single crystal superalloys Elsevier Interface dislocations Elsevier Grooves Elsevier Rafting Elsevier γ/γ′ interfaces Elsevier Wollgramm, P. oth Buck, H. oth Kostka, A. oth Somsen, C. oth Dlouhy, A. oth Eggeler, G. oth Enthalten in Elsevier Science Chauvet, Marcelle ELSEVIER Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. 2022 Amsterdam [u.a.] (DE-627)ELV009239057 volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 https://doi.org/10.1016/j.actamat.2015.02.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 90 2015 15 0515 105-117 13 |
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10.1016/j.actamat.2015.02.005 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV023892102 (ELSEVIER)S1359-6454(15)00101-9 DE-627 ger DE-627 rakwb eng 330 VZ Parsa, A.B. verfasserin aut Ledges and grooves at γ/γ′ interfaces of single crystal superalloys 2015transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. Ni-base single crystal superalloys Elsevier Interface dislocations Elsevier Grooves Elsevier Rafting Elsevier γ/γ′ interfaces Elsevier Wollgramm, P. oth Buck, H. oth Kostka, A. oth Somsen, C. oth Dlouhy, A. oth Eggeler, G. oth Enthalten in Elsevier Science Chauvet, Marcelle ELSEVIER Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. 2022 Amsterdam [u.a.] (DE-627)ELV009239057 volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 https://doi.org/10.1016/j.actamat.2015.02.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 90 2015 15 0515 105-117 13 |
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10.1016/j.actamat.2015.02.005 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV023892102 (ELSEVIER)S1359-6454(15)00101-9 DE-627 ger DE-627 rakwb eng 330 VZ Parsa, A.B. verfasserin aut Ledges and grooves at γ/γ′ interfaces of single crystal superalloys 2015transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. Ni-base single crystal superalloys Elsevier Interface dislocations Elsevier Grooves Elsevier Rafting Elsevier γ/γ′ interfaces Elsevier Wollgramm, P. oth Buck, H. oth Kostka, A. oth Somsen, C. oth Dlouhy, A. oth Eggeler, G. oth Enthalten in Elsevier Science Chauvet, Marcelle ELSEVIER Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. 2022 Amsterdam [u.a.] (DE-627)ELV009239057 volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 https://doi.org/10.1016/j.actamat.2015.02.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 90 2015 15 0515 105-117 13 |
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Enthalten in Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. Amsterdam [u.a.] volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 |
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Enthalten in Nonlinear relationship between monetary policy and stock returns: Evidence from the U.S. Amsterdam [u.a.] volume:90 year:2015 day:15 month:05 pages:105-117 extent:13 |
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We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. 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ledges and grooves at γ/γ′ interfaces of single crystal superalloys |
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Ledges and grooves at γ/γ′ interfaces of single crystal superalloys |
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In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. |
| abstractGer |
In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. |
| abstract_unstemmed |
In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight previous work which documents the presence of such interface irregularities and shows that their number and size increases during high temperature exposure and creep. We use diffraction contrast stereo transmission electron microscopy (TEM) to provide new evidence for the presence of ledges and grooves near dislocations at γ/γ′ interfaces after heat treatment and creep. We present a 2D model of the interfacial region which shows how dislocation stress fields alter local chemical potentials and drive diffusional fluxes which result in the formation of a groove. The results of the numerical study yield realistic groove sizes in relevant time scales. The results obtained in the present study suggest that the formation of grooves and ledges represents an elementary process which needs to be considered when rationalizing the kinetics of rafting, the directional coarsening of the γ′ phase. |
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