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Review on the Hall-Petch Relation in Ferritic Steel
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| Zeitschriftentitel: | Materials Science Forum |
|---|---|
| Personen und Körperschaften: | |
| In: | Materials Science Forum, 654-656, 2010, S. 11-16 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
Trans Tech Publications, Ltd.
|
| Schlagwörter: |
| author_facet |
Takaki, Setsuo Takaki, Setsuo |
|---|---|
| author |
Takaki, Setsuo |
| spellingShingle |
Takaki, Setsuo Materials Science Forum Review on the Hall-Petch Relation in Ferritic Steel Mechanical Engineering Mechanics of Materials Condensed Matter Physics General Materials Science |
| author_sort |
takaki, setsuo |
| spelling |
Takaki, Setsuo 1662-9752 Trans Tech Publications, Ltd. Mechanical Engineering Mechanics of Materials Condensed Matter Physics General Materials Science http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.11 <jats:p>Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky value of interstitial free steels is substantially small as 130-180MPa•μm1/2 and it can be greatly increased by a small amount of solute carbon less than 20ppm. It was also cleared that the disappearance of yield point by purifying is due to the decrease in the ky value. On the other hand, the ky value is changeable depending on heat treatment conditions such as cooling condition from an elevated temperature and aging treatment at 90°C. These results suggest the contribution of carbon segregation at grain boundary in terms of the change in the ky value. On the contrary, substitutional elements such as Cr and Si do not give large influence to the ky value in comparison with the effect by carbon.</jats:p> Review on the Hall-Petch Relation in Ferritic Steel Materials Science Forum |
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DE-D275 DE-Bn3 DE-Brt1 DE-D161 DE-Gla1 DE-Zi4 DE-15 DE-Pl11 DE-Rs1 DE-105 DE-14 DE-Ch1 DE-L229 |
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Trans Tech Publications, Ltd., 2010 |
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| title |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_unstemmed |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_full |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_fullStr |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_full_unstemmed |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_short |
Review on the Hall-Petch Relation in Ferritic Steel |
| title_sort |
review on the hall-petch relation in ferritic steel |
| topic |
Mechanical Engineering Mechanics of Materials Condensed Matter Physics General Materials Science |
| url |
http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.11 |
| publishDate |
2010 |
| physical |
11-16 |
| description |
<jats:p>Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky value of interstitial free steels is substantially small as 130-180MPa•μm1/2 and it can be greatly increased by a small amount of solute carbon less than 20ppm. It was also cleared that the disappearance of yield point by purifying is due to the decrease in the ky value. On the other hand, the ky value is changeable depending on heat treatment conditions such as cooling condition from an elevated temperature and aging treatment at 90°C. These results suggest the contribution of carbon segregation at grain boundary in terms of the change in the ky value. On the contrary, substitutional elements such as Cr and Si do not give large influence to the ky value in comparison with the effect by carbon.</jats:p> |
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| author | Takaki, Setsuo |
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| container_title | Materials Science Forum |
| container_volume | 654-656 |
| description | <jats:p>Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky value of interstitial free steels is substantially small as 130-180MPa•μm1/2 and it can be greatly increased by a small amount of solute carbon less than 20ppm. It was also cleared that the disappearance of yield point by purifying is due to the decrease in the ky value. On the other hand, the ky value is changeable depending on heat treatment conditions such as cooling condition from an elevated temperature and aging treatment at 90°C. These results suggest the contribution of carbon segregation at grain boundary in terms of the change in the ky value. On the contrary, substitutional elements such as Cr and Si do not give large influence to the ky value in comparison with the effect by carbon.</jats:p> |
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| imprint | Trans Tech Publications, Ltd., 2010 |
| imprint_str_mv | Trans Tech Publications, Ltd., 2010 |
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| physical | 11-16 |
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| spelling | Takaki, Setsuo 1662-9752 Trans Tech Publications, Ltd. Mechanical Engineering Mechanics of Materials Condensed Matter Physics General Materials Science http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.11 <jats:p>Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky value of interstitial free steels is substantially small as 130-180MPa•μm1/2 and it can be greatly increased by a small amount of solute carbon less than 20ppm. It was also cleared that the disappearance of yield point by purifying is due to the decrease in the ky value. On the other hand, the ky value is changeable depending on heat treatment conditions such as cooling condition from an elevated temperature and aging treatment at 90°C. These results suggest the contribution of carbon segregation at grain boundary in terms of the change in the ky value. On the contrary, substitutional elements such as Cr and Si do not give large influence to the ky value in comparison with the effect by carbon.</jats:p> Review on the Hall-Petch Relation in Ferritic Steel Materials Science Forum |
| spellingShingle | Takaki, Setsuo, Materials Science Forum, Review on the Hall-Petch Relation in Ferritic Steel, Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science |
| title | Review on the Hall-Petch Relation in Ferritic Steel |
| title_full | Review on the Hall-Petch Relation in Ferritic Steel |
| title_fullStr | Review on the Hall-Petch Relation in Ferritic Steel |
| title_full_unstemmed | Review on the Hall-Petch Relation in Ferritic Steel |
| title_short | Review on the Hall-Petch Relation in Ferritic Steel |
| title_sort | review on the hall-petch relation in ferritic steel |
| title_unstemmed | Review on the Hall-Petch Relation in Ferritic Steel |
| topic | Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science |
| url | http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.11 |