Effect of rhenium on the brittle fracture threshold of molybdenum
Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Morgunova, N. N. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1987 |
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| Schlagwörter: |
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| Anmerkung: |
© Plenum Publishing Corporation 1987 |
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| Übergeordnetes Werk: |
Enthalten in: Metal science and heat treatment - Kluwer Academic Publishers-Plenum Publishers, 1959, 29(1987), 6 vom: Juni, Seite 441-447 |
|---|---|
| Übergeordnetes Werk: |
volume:29 ; year:1987 ; number:6 ; month:06 ; pages:441-447 |
| Links: |
|---|
| DOI / URN: |
10.1007/BF00715883 |
|---|
| Katalog-ID: |
OLC2048040640 |
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| 245 | 1 | 0 | |a Effect of rhenium on the brittle fracture threshold of molybdenum |
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| 520 | |a Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. | ||
| 650 | 4 | |a Molybdenum | |
| 650 | 4 | |a Brittle Fracture | |
| 650 | 4 | |a Rhenium | |
| 650 | 4 | |a Fracture Threshold | |
| 650 | 4 | |a Cold Brittleness | |
| 700 | 1 | |a Abramyan, A. V. |4 aut | |
| 700 | 1 | |a Kazakova, N. I. |4 aut | |
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10.1007/BF00715883 doi (DE-627)OLC2048040640 (DE-He213)BF00715883-p DE-627 ger DE-627 rakwb eng 670 620 660 VZ Morgunova, N. N. verfasserin aut Effect of rhenium on the brittle fracture threshold of molybdenum 1987 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1987 Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. Molybdenum Brittle Fracture Rhenium Fracture Threshold Cold Brittleness Abramyan, A. V. aut Kazakova, N. I. aut Enthalten in Metal science and heat treatment Kluwer Academic Publishers-Plenum Publishers, 1959 29(1987), 6 vom: Juni, Seite 441-447 (DE-627)129596981 (DE-600)240858-2 (DE-576)015090159 0026-0673 nnns volume:29 year:1987 number:6 month:06 pages:441-447 https://doi.org/10.1007/BF00715883 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4319 AR 29 1987 6 06 441-447 |
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10.1007/BF00715883 doi (DE-627)OLC2048040640 (DE-He213)BF00715883-p DE-627 ger DE-627 rakwb eng 670 620 660 VZ Morgunova, N. N. verfasserin aut Effect of rhenium on the brittle fracture threshold of molybdenum 1987 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1987 Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. Molybdenum Brittle Fracture Rhenium Fracture Threshold Cold Brittleness Abramyan, A. V. aut Kazakova, N. I. aut Enthalten in Metal science and heat treatment Kluwer Academic Publishers-Plenum Publishers, 1959 29(1987), 6 vom: Juni, Seite 441-447 (DE-627)129596981 (DE-600)240858-2 (DE-576)015090159 0026-0673 nnns volume:29 year:1987 number:6 month:06 pages:441-447 https://doi.org/10.1007/BF00715883 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4319 AR 29 1987 6 06 441-447 |
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10.1007/BF00715883 doi (DE-627)OLC2048040640 (DE-He213)BF00715883-p DE-627 ger DE-627 rakwb eng 670 620 660 VZ Morgunova, N. N. verfasserin aut Effect of rhenium on the brittle fracture threshold of molybdenum 1987 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1987 Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. Molybdenum Brittle Fracture Rhenium Fracture Threshold Cold Brittleness Abramyan, A. V. aut Kazakova, N. I. aut Enthalten in Metal science and heat treatment Kluwer Academic Publishers-Plenum Publishers, 1959 29(1987), 6 vom: Juni, Seite 441-447 (DE-627)129596981 (DE-600)240858-2 (DE-576)015090159 0026-0673 nnns volume:29 year:1987 number:6 month:06 pages:441-447 https://doi.org/10.1007/BF00715883 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4319 AR 29 1987 6 06 441-447 |
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10.1007/BF00715883 doi (DE-627)OLC2048040640 (DE-He213)BF00715883-p DE-627 ger DE-627 rakwb eng 670 620 660 VZ Morgunova, N. N. verfasserin aut Effect of rhenium on the brittle fracture threshold of molybdenum 1987 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1987 Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. Molybdenum Brittle Fracture Rhenium Fracture Threshold Cold Brittleness Abramyan, A. V. aut Kazakova, N. I. aut Enthalten in Metal science and heat treatment Kluwer Academic Publishers-Plenum Publishers, 1959 29(1987), 6 vom: Juni, Seite 441-447 (DE-627)129596981 (DE-600)240858-2 (DE-576)015090159 0026-0673 nnns volume:29 year:1987 number:6 month:06 pages:441-447 https://doi.org/10.1007/BF00715883 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4319 AR 29 1987 6 06 441-447 |
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10.1007/BF00715883 doi (DE-627)OLC2048040640 (DE-He213)BF00715883-p DE-627 ger DE-627 rakwb eng 670 620 660 VZ Morgunova, N. N. verfasserin aut Effect of rhenium on the brittle fracture threshold of molybdenum 1987 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 1987 Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. Molybdenum Brittle Fracture Rhenium Fracture Threshold Cold Brittleness Abramyan, A. V. aut Kazakova, N. I. aut Enthalten in Metal science and heat treatment Kluwer Academic Publishers-Plenum Publishers, 1959 29(1987), 6 vom: Juni, Seite 441-447 (DE-627)129596981 (DE-600)240858-2 (DE-576)015090159 0026-0673 nnns volume:29 year:1987 number:6 month:06 pages:441-447 https://doi.org/10.1007/BF00715883 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_70 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4319 AR 29 1987 6 06 441-447 |
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Enthalten in Metal science and heat treatment 29(1987), 6 vom: Juni, Seite 441-447 volume:29 year:1987 number:6 month:06 pages:441-447 |
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Effect of rhenium on the brittle fracture threshold of molybdenum |
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Effect of rhenium on the brittle fracture threshold of molybdenum |
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Morgunova, N. N. |
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Metal science and heat treatment |
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1987 |
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441 |
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Morgunova, N. N. Abramyan, A. V. Kazakova, N. I. |
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Morgunova, N. N. |
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10.1007/BF00715883 |
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670 620 660 |
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effect of rhenium on the brittle fracture threshold of molybdenum |
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Effect of rhenium on the brittle fracture threshold of molybdenum |
| abstract |
Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. © Plenum Publishing Corporation 1987 |
| abstractGer |
Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. © Plenum Publishing Corporation 1987 |
| abstract_unstemmed |
Conclusions Addition of rhenium in quantities from 0.5 to 36% into molybdenum does not result in monotonic reduction of the metal cold brittleness threshold in its cast condition (Tbu), as this is usually suggested in technical literature [5, 6, 9].In introducing rhenium into molybdenum an increase is observed in the temperature range of transition of cast metal from plastic to brittle state. This increases Tbu and reduces Tbl with the exception of alloys containing 4–6% Re whose Tbu corresponds to Tbu of pure molybdenum.An increase of Tbu in adding rhenium to molybdenum is connected with increased values of $ σ_{0·2} $ in the higher temperature region of the cold brittleness range, while a reduction of Tbl is caused by a marked weakening of the temperature sensitivity $ σ_{0·2} $.The retention of plasticity down to lower temperatures with a high rhenium content (36%) is associated with the additional mechanism of strain-twinning. In alloys with a lower rhenium content (0.5–20%) twinning is not observed.At all temperatures below Tbu the character of fracture of alloys, regardless of their rhenium content, is brittle, transcrystalline and differs little when the test temperature changes from Tbu to Tbl. An increase in plasticity during transition from Tbl to Tbu leads to the appearance in the fracture of traces of a preliminary plastic strain with the general brittle nature of fracture retained. At temperatures above Tbu the specimens bend with α=120°C without fracture, consequently, the Mo−Re alloys like pure molybdenum develop no tough fracture. © Plenum Publishing Corporation 1987 |
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Effect of rhenium on the brittle fracture threshold of molybdenum |
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