Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel
The grain boundary misorientation distributions associated with the development of dynamic recrystallization were studied in a high-nitrogen austenitic stainless steel subjected to hot working. Under conditions of discontinuous dynamic recrystallization, the relationships between the grain or subgra...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-11-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2075-4701/6/11/268 |
| _version_ | 1818218553927532544 |
|---|---|
| author | Marina Tikhonova Pavel Dolzhenko Rustam Kaibyshev Andrey Belyakov |
| author_facet | Marina Tikhonova Pavel Dolzhenko Rustam Kaibyshev Andrey Belyakov |
| author_sort | Marina Tikhonova |
| collection | DOAJ |
| description | The grain boundary misorientation distributions associated with the development of dynamic recrystallization were studied in a high-nitrogen austenitic stainless steel subjected to hot working. Under conditions of discontinuous dynamic recrystallization, the relationships between the grain or subgrain sizes and flow stresses can be expressed by power law functions with different grain/subgrain size exponents of about −0.76 (for grain size) or −1.0 (for subgrain size). Therefore, the mean grain size being much larger than the subgrain size under conditions of low flow stress gradually approaches the size of the subgrains with an increase in the flow stress. These dependencies lead to the fraction of high-angle boundaries being a function of the flow stress. Namely, the fraction of ordinary high-angle boundaries in dynamically-recrystallized structures decreases with a decrease in the flow stress. On the other hand, the fraction of special boundaries, which are associated with annealing twins, progressively increases with a decrease of the flow stress. |
| first_indexed | 2024-12-12T07:25:36Z |
| format | Article |
| id | doaj.art-254c013ee47344fb86b1001c24cef73c |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-12T07:25:36Z |
| publishDate | 2016-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-254c013ee47344fb86b1001c24cef73c2022-12-22T00:33:09ZengMDPI AGMetals2075-47012016-11-0161126810.3390/met6110268met6110268Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless SteelMarina Tikhonova0Pavel Dolzhenko1Rustam Kaibyshev2Andrey Belyakov3Laboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, Pobeda 85, Belgorod 308015, RussiaLaboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, Pobeda 85, Belgorod 308015, RussiaLaboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, Pobeda 85, Belgorod 308015, RussiaLaboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, Pobeda 85, Belgorod 308015, RussiaThe grain boundary misorientation distributions associated with the development of dynamic recrystallization were studied in a high-nitrogen austenitic stainless steel subjected to hot working. Under conditions of discontinuous dynamic recrystallization, the relationships between the grain or subgrain sizes and flow stresses can be expressed by power law functions with different grain/subgrain size exponents of about −0.76 (for grain size) or −1.0 (for subgrain size). Therefore, the mean grain size being much larger than the subgrain size under conditions of low flow stress gradually approaches the size of the subgrains with an increase in the flow stress. These dependencies lead to the fraction of high-angle boundaries being a function of the flow stress. Namely, the fraction of ordinary high-angle boundaries in dynamically-recrystallized structures decreases with a decrease in the flow stress. On the other hand, the fraction of special boundaries, which are associated with annealing twins, progressively increases with a decrease of the flow stress.http://www.mdpi.com/2075-4701/6/11/268dynamic recrystallizationaustenitic stainless steelgrain boundary engineeringhot working |
| spellingShingle | Marina Tikhonova Pavel Dolzhenko Rustam Kaibyshev Andrey Belyakov Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel Metals dynamic recrystallization austenitic stainless steel grain boundary engineering hot working |
| title | Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel |
| title_full | Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel |
| title_fullStr | Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel |
| title_full_unstemmed | Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel |
| title_short | Grain Boundary Assemblies in Dynamically-Recrystallized Austenitic Stainless Steel |
| title_sort | grain boundary assemblies in dynamically recrystallized austenitic stainless steel |
| topic | dynamic recrystallization austenitic stainless steel grain boundary engineering hot working |
| url | http://www.mdpi.com/2075-4701/6/11/268 |
| work_keys_str_mv | AT marinatikhonova grainboundaryassembliesindynamicallyrecrystallizedausteniticstainlesssteel AT paveldolzhenko grainboundaryassembliesindynamicallyrecrystallizedausteniticstainlesssteel AT rustamkaibyshev grainboundaryassembliesindynamicallyrecrystallizedausteniticstainlesssteel AT andreybelyakov grainboundaryassembliesindynamicallyrecrystallizedausteniticstainlesssteel |