Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels
The knowledge of the flow behavior of metallic alloys subjected to hot forming operations has particular interest for metallurgists in the practice of industrial forming processes involving high temperatures (e.g., rolling, forging, and/or extrusion operations). Dynamic recrystallisation (DRX) occur...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-01-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/10/1/135 |
| _version_ | 1828159446303375360 |
|---|---|
| author | Gonzalo Varela-Castro José-María Cabrera José-Manuel Prado |
| author_facet | Gonzalo Varela-Castro José-María Cabrera José-Manuel Prado |
| author_sort | Gonzalo Varela-Castro |
| collection | DOAJ |
| description | The knowledge of the flow behavior of metallic alloys subjected to hot forming operations has particular interest for metallurgists in the practice of industrial forming processes involving high temperatures (e.g., rolling, forging, and/or extrusion operations). Dynamic recrystallisation (DRX) occurs during high temperature forming over a wide range of metals and alloys, and it is known to be a powerful tool that can be used to control the microstructure and mechanical properties. Therefore, it is important to know, particularly in low stacking fault energy materials, the precise time at which DRX is available to act. Under a constant strain rate condition, and for a given temperature, such a time is defined as a critical strain (<i>ε<sub>c</sub></i>). Unfortunately, this critical value is not always directly measurable on the flow curve; as a result, different methods have been developed to derive it. Focused on carbon and microalloyed steels subjected to laboratory-scale testing, in the present work, the state of art on the critical strain for the initiation of DRX is reviewed and summarized. A review of the different methods and expressions for assessing the critical strain is also included. The collected data are well suited to feeding constitutive models and computational codes. |
| first_indexed | 2024-04-12T00:01:10Z |
| format | Article |
| id | doaj.art-edfa174047574e4483d87627683a1f35 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-12T00:01:10Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-edfa174047574e4483d87627683a1f352022-12-22T03:56:14ZengMDPI AGMetals2075-47012020-01-0110113510.3390/met10010135met10010135Critical Strain for Dynamic Recrystallisation. The Particular Case of SteelsGonzalo Varela-Castro0José-María Cabrera1José-Manuel Prado2Department of Materials Science and Engineering, Universitat Politècnica de Catalunya—BarcelonaTech (UPC), c/Eduard Maristany 10-4, Edificio I, 08019 Barcelona, SpainDepartment of Materials Science and Engineering, Universitat Politècnica de Catalunya—BarcelonaTech (UPC), c/Eduard Maristany 10-4, Edificio I, 08019 Barcelona, SpainDepartment of Materials Science and Engineering, Universitat Politècnica de Catalunya—BarcelonaTech (UPC), c/Eduard Maristany 10-4, Edificio I, 08019 Barcelona, SpainThe knowledge of the flow behavior of metallic alloys subjected to hot forming operations has particular interest for metallurgists in the practice of industrial forming processes involving high temperatures (e.g., rolling, forging, and/or extrusion operations). Dynamic recrystallisation (DRX) occurs during high temperature forming over a wide range of metals and alloys, and it is known to be a powerful tool that can be used to control the microstructure and mechanical properties. Therefore, it is important to know, particularly in low stacking fault energy materials, the precise time at which DRX is available to act. Under a constant strain rate condition, and for a given temperature, such a time is defined as a critical strain (<i>ε<sub>c</sub></i>). Unfortunately, this critical value is not always directly measurable on the flow curve; as a result, different methods have been developed to derive it. Focused on carbon and microalloyed steels subjected to laboratory-scale testing, in the present work, the state of art on the critical strain for the initiation of DRX is reviewed and summarized. A review of the different methods and expressions for assessing the critical strain is also included. The collected data are well suited to feeding constitutive models and computational codes.https://www.mdpi.com/2075-4701/10/1/135critical strainonset dynamic recrystallisationdynamic restorationsofteninghot rollingstrain hardening ratesteels |
| spellingShingle | Gonzalo Varela-Castro José-María Cabrera José-Manuel Prado Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels Metals critical strain onset dynamic recrystallisation dynamic restoration softening hot rolling strain hardening rate steels |
| title | Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels |
| title_full | Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels |
| title_fullStr | Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels |
| title_full_unstemmed | Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels |
| title_short | Critical Strain for Dynamic Recrystallisation. The Particular Case of Steels |
| title_sort | critical strain for dynamic recrystallisation the particular case of steels |
| topic | critical strain onset dynamic recrystallisation dynamic restoration softening hot rolling strain hardening rate steels |
| url | https://www.mdpi.com/2075-4701/10/1/135 |
| work_keys_str_mv | AT gonzalovarelacastro criticalstrainfordynamicrecrystallisationtheparticularcaseofsteels AT josemariacabrera criticalstrainfordynamicrecrystallisationtheparticularcaseofsteels AT josemanuelprado criticalstrainfordynamicrecrystallisationtheparticularcaseofsteels |