Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2
The aim of this research is to clarify the influence of vacuum carburizing on the fatigue-crack progress characteristics of DSG2 steel. The test specimen tempering material (QT material) and vacuum carburizing material (VC material) has been used. The fatigue-crack progress was examined by subjectin...
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Gruppo Italiano Frattura
2015-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1580 |
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| author | K. Nambu N. Egami |
| author_facet | K. Nambu N. Egami |
| author_sort | K. Nambu |
| collection | DOAJ |
| description | The aim of this research is to clarify the influence of vacuum carburizing on the fatigue-crack progress
characteristics of DSG2 steel. The test specimen tempering material (QT material) and vacuum carburizing
material (VC material) has been used. The fatigue-crack progress was examined by subjecting the samples to
four-point bending. The loading-capacity fixed experiment was done using a maximum load of Pmax = 4000–
7000 N. The ?K fixed experiment was done using a load of ?K = 18–36 MPa?m.
The crack progress speed of VC material fell, after the high crack progress speed was shown, and after it
showed the minimum, it showed the tendency to go up again. This is considered to be what is depended on the
compressive residual stress given to the carburizing layer. From this, it is thinkable that there is a crack progress depression effect in a carburizing layer.
In VC material, a carburizing layer has a crack progress depression effect from a plunger-helix bottom to about
2.6 mm, and it turned out that it is larger than an effective carburizing layer. Moreover, in each ?K, it was
shown that depression effect revelation differs and the crack progress process accompanying it was able to be
shown typically. |
| format | Article |
| id | doaj-art-6417dae08cc444a295370df683ee0b6b |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2015-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-6417dae08cc444a295370df683ee0b6b2025-01-02T23:01:28ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-09-01934Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2K. NambuN. EgamiThe aim of this research is to clarify the influence of vacuum carburizing on the fatigue-crack progress characteristics of DSG2 steel. The test specimen tempering material (QT material) and vacuum carburizing material (VC material) has been used. The fatigue-crack progress was examined by subjecting the samples to four-point bending. The loading-capacity fixed experiment was done using a maximum load of Pmax = 4000– 7000 N. The ?K fixed experiment was done using a load of ?K = 18–36 MPa?m. The crack progress speed of VC material fell, after the high crack progress speed was shown, and after it showed the minimum, it showed the tendency to go up again. This is considered to be what is depended on the compressive residual stress given to the carburizing layer. From this, it is thinkable that there is a crack progress depression effect in a carburizing layer. In VC material, a carburizing layer has a crack progress depression effect from a plunger-helix bottom to about 2.6 mm, and it turned out that it is larger than an effective carburizing layer. Moreover, in each ?K, it was shown that depression effect revelation differs and the crack progress process accompanying it was able to be shown typically.https://www.fracturae.com/index.php/fis/article/view/1580Vacuum carburizing |
| spellingShingle | K. Nambu N. Egami Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 Fracture and Structural Integrity Vacuum carburizing |
| title | Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 |
| title_full | Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 |
| title_fullStr | Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 |
| title_full_unstemmed | Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 |
| title_short | Influence of vacuum carburizing treatment on fatigue crack growth characteristic in DSG2 |
| title_sort | influence of vacuum carburizing treatment on fatigue crack growth characteristic in dsg2 |
| topic | Vacuum carburizing |
| url | https://www.fracturae.com/index.php/fis/article/view/1580 |
| work_keys_str_mv | AT knambu influenceofvacuumcarburizingtreatmentonfatiguecrackgrowthcharacteristicindsg2 AT negami influenceofvacuumcarburizingtreatmentonfatiguecrackgrowthcharacteristicindsg2 |