Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation
Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions o...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Tin, S. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2001 |
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| Schlagwörter: |
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| Anmerkung: |
© ASM International & TMS-The Minerals, Metals and Materials Society 2001 |
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| Übergeordnetes Werk: |
Enthalten in: Metallurgical and materials transactions / A - Springer-Verlag, 1994, 32(2001), 7 vom: Juli, Seite 1743-1753 |
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| Übergeordnetes Werk: |
volume:32 ; year:2001 ; number:7 ; month:07 ; pages:1743-1753 |
| Links: |
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| DOI / URN: |
10.1007/s11661-001-0151-5 |
|---|
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OLC2054005533 |
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| 520 | |a Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. | ||
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10.1007/s11661-001-0151-5 doi (DE-627)OLC2054005533 (DE-He213)s11661-001-0151-5-p DE-627 ger DE-627 rakwb eng 670 530 VZ 19,1 ssgn Tin, S. verfasserin aut Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ASM International & TMS-The Minerals, Metals and Materials Society 2001 Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. Carbide Material Transaction Mushy Zone Carbon Addition Segregation Behavior Pollock, T. M. aut Murphy, W. aut Enthalten in Metallurgical and materials transactions / A Springer-Verlag, 1994 32(2001), 7 vom: Juli, Seite 1743-1753 (DE-627)171342011 (DE-600)1179415-X (DE-576)038876930 1073-5623 nnns volume:32 year:2001 number:7 month:07 pages:1743-1753 https://doi.org/10.1007/s11661-001-0151-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4700 AR 32 2001 7 07 1743-1753 |
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10.1007/s11661-001-0151-5 doi (DE-627)OLC2054005533 (DE-He213)s11661-001-0151-5-p DE-627 ger DE-627 rakwb eng 670 530 VZ 19,1 ssgn Tin, S. verfasserin aut Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ASM International & TMS-The Minerals, Metals and Materials Society 2001 Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. Carbide Material Transaction Mushy Zone Carbon Addition Segregation Behavior Pollock, T. M. aut Murphy, W. aut Enthalten in Metallurgical and materials transactions / A Springer-Verlag, 1994 32(2001), 7 vom: Juli, Seite 1743-1753 (DE-627)171342011 (DE-600)1179415-X (DE-576)038876930 1073-5623 nnns volume:32 year:2001 number:7 month:07 pages:1743-1753 https://doi.org/10.1007/s11661-001-0151-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4700 AR 32 2001 7 07 1743-1753 |
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10.1007/s11661-001-0151-5 doi (DE-627)OLC2054005533 (DE-He213)s11661-001-0151-5-p DE-627 ger DE-627 rakwb eng 670 530 VZ 19,1 ssgn Tin, S. verfasserin aut Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ASM International & TMS-The Minerals, Metals and Materials Society 2001 Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. Carbide Material Transaction Mushy Zone Carbon Addition Segregation Behavior Pollock, T. M. aut Murphy, W. aut Enthalten in Metallurgical and materials transactions / A Springer-Verlag, 1994 32(2001), 7 vom: Juli, Seite 1743-1753 (DE-627)171342011 (DE-600)1179415-X (DE-576)038876930 1073-5623 nnns volume:32 year:2001 number:7 month:07 pages:1743-1753 https://doi.org/10.1007/s11661-001-0151-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4700 AR 32 2001 7 07 1743-1753 |
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10.1007/s11661-001-0151-5 doi (DE-627)OLC2054005533 (DE-He213)s11661-001-0151-5-p DE-627 ger DE-627 rakwb eng 670 530 VZ 19,1 ssgn Tin, S. verfasserin aut Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © ASM International & TMS-The Minerals, Metals and Materials Society 2001 Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. Carbide Material Transaction Mushy Zone Carbon Addition Segregation Behavior Pollock, T. M. aut Murphy, W. aut Enthalten in Metallurgical and materials transactions / A Springer-Verlag, 1994 32(2001), 7 vom: Juli, Seite 1743-1753 (DE-627)171342011 (DE-600)1179415-X (DE-576)038876930 1073-5623 nnns volume:32 year:2001 number:7 month:07 pages:1743-1753 https://doi.org/10.1007/s11661-001-0151-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4700 AR 32 2001 7 07 1743-1753 |
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Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation |
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Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation |
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Tin, S. |
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Tin, S. Pollock, T. M. Murphy, W. |
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stabilization of thermosolutal convective instabilities in ni-based single-crystal superalloys: carbon additions and freckle formation |
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Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation |
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Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. © ASM International & TMS-The Minerals, Metals and Materials Society 2001 |
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Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. © ASM International & TMS-The Minerals, Metals and Materials Society 2001 |
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Abstract The effect of carbon additions on the solidification characteristics of single-crystal Ni-based superalloys has been studied over a range of composition with large variations in Re, W, and Ta. Under constant processing conditions, nominally similar experimental alloys containing additions of 0.1 wt pct C exhibited a decreased tendency to develop grain defects, such as freckle chains. The carbon additions resulted in the formation of Ta-rich MC carbides with three distinct morphologies: blocky, nodular, and script. These carbides all precipitate near the liquidus temperature of the alloy. Intentional carbon additions also affected the segregation behavior of the constituent elements. Comparison of experimentally measured distribution coefficients assessed via application of a Scheil-type analysis revealed reduced segregation of Re, W, and Ta in experimental single-crystal alloys containing carbon. The mechanisms by which carbon additions influence freckle formation are considered. © ASM International & TMS-The Minerals, Metals and Materials Society 2001 |
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Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation |
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