An assessment of static recrystallization in L-605 Cobalt-based superalloy
In this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amoun...
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| Format: | Article |
| Language: | English |
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The Netherlands Press
2016-12-01
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| Series: | Metallurgical & Materials Engineering |
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| Online Access: | https://metall-mater-eng.com/index.php/home/article/view/231 |
| _version_ | 1797963156542193664 |
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| author | Padina Ajami Ghaleh Rashidi Hossein Arabi Seyed Mehdi Abbasi |
| author_facet | Padina Ajami Ghaleh Rashidi Hossein Arabi Seyed Mehdi Abbasi |
| author_sort | Padina Ajami Ghaleh Rashidi |
| collection | DOAJ |
| description | In this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amounts (i.e. 5-35 percent thickness reduction). The cold-rolled samples were heat treated for different times (i.e. 2-120 min.) at temperature range of 1068-1230 ºC in order to study their recrystallization behavior. The results of microstructural analysis indicated that static recrystallization is responsible for microstructural refinement and coarsening, so that an increase in the amounts of cold rolling resulted in a fully recrystallized microstructure at lower temperature. This analysis also indicated that annealing temperature is more effective than annealing time in grain growth. Microstructural evaluation as well as showed that carbides such as M7C3 and M23C6 which have been reported in some literature were not observed during rolling or annealing in this research. It is perhaps due to usage of high annealing temperatures or possibly due to their very low contents which was not possible for us to evaluate their formation with conventional methods. Hardness results revealed that higher annealing temperature lead to lower hardness values as expected. |
| first_indexed | 2024-04-11T01:24:59Z |
| format | Article |
| id | doaj.art-7cd2a1732f964526843cd32d8fa8fa80 |
| institution | Directory Open Access Journal |
| issn | 2217-8961 |
| language | English |
| last_indexed | 2024-04-11T01:24:59Z |
| publishDate | 2016-12-01 |
| publisher | The Netherlands Press |
| record_format | Article |
| series | Metallurgical & Materials Engineering |
| spelling | doaj.art-7cd2a1732f964526843cd32d8fa8fa802023-01-03T10:36:52ZengThe Netherlands PressMetallurgical & Materials Engineering2217-89612016-12-01224221236228An assessment of static recrystallization in L-605 Cobalt-based superalloyPadina Ajami Ghaleh Rashidi0Hossein Arabi1Seyed Mehdi Abbasi2School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, IranCenter of Excellence for High Strength Alloys Technology (CEHSAT), School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, IranMetallic Materials Research Center (MMRC-MA), Tehran, IranIn this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amounts (i.e. 5-35 percent thickness reduction). The cold-rolled samples were heat treated for different times (i.e. 2-120 min.) at temperature range of 1068-1230 ºC in order to study their recrystallization behavior. The results of microstructural analysis indicated that static recrystallization is responsible for microstructural refinement and coarsening, so that an increase in the amounts of cold rolling resulted in a fully recrystallized microstructure at lower temperature. This analysis also indicated that annealing temperature is more effective than annealing time in grain growth. Microstructural evaluation as well as showed that carbides such as M7C3 and M23C6 which have been reported in some literature were not observed during rolling or annealing in this research. It is perhaps due to usage of high annealing temperatures or possibly due to their very low contents which was not possible for us to evaluate their formation with conventional methods. Hardness results revealed that higher annealing temperature lead to lower hardness values as expected.https://metall-mater-eng.com/index.php/home/article/view/231recrystallization, annealing, cold rolling, grain size, L-605 superalloy |
| spellingShingle | Padina Ajami Ghaleh Rashidi Hossein Arabi Seyed Mehdi Abbasi An assessment of static recrystallization in L-605 Cobalt-based superalloy Metallurgical & Materials Engineering recrystallization, annealing, cold rolling, grain size, L-605 superalloy |
| title | An assessment of static recrystallization in L-605 Cobalt-based superalloy |
| title_full | An assessment of static recrystallization in L-605 Cobalt-based superalloy |
| title_fullStr | An assessment of static recrystallization in L-605 Cobalt-based superalloy |
| title_full_unstemmed | An assessment of static recrystallization in L-605 Cobalt-based superalloy |
| title_short | An assessment of static recrystallization in L-605 Cobalt-based superalloy |
| title_sort | assessment of static recrystallization in l 605 cobalt based superalloy |
| topic | recrystallization, annealing, cold rolling, grain size, L-605 superalloy |
| url | https://metall-mater-eng.com/index.php/home/article/view/231 |
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