EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL
The study is conducted to determine the effect of quenching and tempering processes on microstructural evolutions and abrasive properties of medium carbon-high chromium steel. For this purpose, Austenitizing was performed at the temperatures of 1000 °C for 15 min followed by oil quenching. To determ...
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| Format: | Article |
| Language: | English |
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SciCell s.r.o.
2018-06-01
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| Series: | Acta Metallurgica Slovaca |
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| Online Access: | https://journals.scicell.org/index.php/AMS/article/view/260 |
| _version_ | 1818334666963288064 |
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| author | Masoud Sehri Hamid Ghayour Kamran Amini Masaab Naseri Habib Rastegari Vahid Javaeri |
| author_facet | Masoud Sehri Hamid Ghayour Kamran Amini Masaab Naseri Habib Rastegari Vahid Javaeri |
| author_sort | Masoud Sehri |
| collection | DOAJ |
| description | The study is conducted to determine the effect of quenching and tempering processes on microstructural evolutions and abrasive properties of medium carbon-high chromium steel. For this purpose, Austenitizing was performed at the temperatures of 1000 °C for 15 min followed by oil quenching. To determine the optimum tempering temperature, tempering temperatures were selected in the temperature ranges of 350-550°C. The samples cryogenically treated immediately after quenching in liquid nitrogen (-196°C) for 24 hrs. Dry sand/rubber wheel test was used to evaluate the wear resistance properties. Microstructural observation, fractography and retain austenite was evaluated by optical and scanning electron microscopy and X-ray diffraction analysis. The results show that the best wear resistance can be obtained at the tempering temperature of 500°C, due to the reduction of a tendency to micro-cracking, decrease in internal stresses and improvement of impact energy. Observation of the worn surfaces revealed that the wear mechanisms after tempering at 450°C are a combination of abrasive, adhesive and fatigue wear. However, abrasive wear is the only active wear mechanism for specimen tempered at 500°C. In addition, wear resistance of deep cryogenically treated sample was significantly increased (about 25%) by the removal of retained austenite and formation of uniform fine carbides distribution in the matrix. |
| first_indexed | 2024-12-13T14:11:10Z |
| format | Article |
| id | doaj.art-7939c206e6ed4705b590c00ecc715c43 |
| institution | Directory Open Access Journal |
| issn | 1335-1532 1338-1156 |
| language | English |
| last_indexed | 2024-12-13T14:11:10Z |
| publishDate | 2018-06-01 |
| publisher | SciCell s.r.o. |
| record_format | Article |
| series | Acta Metallurgica Slovaca |
| spelling | doaj.art-7939c206e6ed4705b590c00ecc715c432022-12-21T23:42:27ZengSciCell s.r.o.Acta Metallurgica Slovaca1335-15321338-11562018-06-0124210.12776/ams.v24i2.1037EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEELMasoud SehriHamid GhayourKamran AminiMasaab NaseriHabib RastegariVahid JavaeriThe study is conducted to determine the effect of quenching and tempering processes on microstructural evolutions and abrasive properties of medium carbon-high chromium steel. For this purpose, Austenitizing was performed at the temperatures of 1000 °C for 15 min followed by oil quenching. To determine the optimum tempering temperature, tempering temperatures were selected in the temperature ranges of 350-550°C. The samples cryogenically treated immediately after quenching in liquid nitrogen (-196°C) for 24 hrs. Dry sand/rubber wheel test was used to evaluate the wear resistance properties. Microstructural observation, fractography and retain austenite was evaluated by optical and scanning electron microscopy and X-ray diffraction analysis. The results show that the best wear resistance can be obtained at the tempering temperature of 500°C, due to the reduction of a tendency to micro-cracking, decrease in internal stresses and improvement of impact energy. Observation of the worn surfaces revealed that the wear mechanisms after tempering at 450°C are a combination of abrasive, adhesive and fatigue wear. However, abrasive wear is the only active wear mechanism for specimen tempered at 500°C. In addition, wear resistance of deep cryogenically treated sample was significantly increased (about 25%) by the removal of retained austenite and formation of uniform fine carbides distribution in the matrix.https://journals.scicell.org/index.php/AMS/article/view/260Heat treatmentDeep cryogenicMicrostructureWear-resistantMartensitic steel |
| spellingShingle | Masoud Sehri Hamid Ghayour Kamran Amini Masaab Naseri Habib Rastegari Vahid Javaeri EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL Acta Metallurgica Slovaca Heat treatment Deep cryogenic Microstructure Wear-resistant Martensitic steel |
| title | EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL |
| title_full | EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL |
| title_fullStr | EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL |
| title_full_unstemmed | EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL |
| title_short | EFFECTS OF CRYOGENIC TREATMENT ON MICROSTRUCTURE AND WEAR RESISTANCE OF Fe-0.35C-6.3Cr MARTENSITIC STEEL |
| title_sort | effects of cryogenic treatment on microstructure and wear resistance of fe 0 35c 6 3cr martensitic steel |
| topic | Heat treatment Deep cryogenic Microstructure Wear-resistant Martensitic steel |
| url | https://journals.scicell.org/index.php/AMS/article/view/260 |
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