Academic Journal
Recrystallisation before austenitization for improved microstructure and properties in automotive steel sheets with high product of strength and elongation
| العنوان: | Recrystallisation before austenitization for improved microstructure and properties in automotive steel sheets with high product of strength and elongation |
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| المؤلفون: | Fei Huang, Heng Zhang, Jialin Qi, Qiwei Chen, Hanlin Ding |
| المصدر: | Materials Research Express, Vol 8, Iss 5, p 056510 (2021) |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2021 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | pre-recrystallisation, microstructure, properties, high product of strength and elongation, Materials of engineering and construction. Mechanics of materials, TA401-492, Chemical technology, TP1-1185 |
| الوصف: | This study investigated the effect of recrystallization before austenitizing transformation (i.e., pre-recrystallization) on the microstructure and properties of 22Mn2Cr cold-rolled automotive steel sheets based on continuous annealing at 700 °C for various holding times. Subsequently, the samples were heated to an austenitizing temperature of ∼850 °C, which led to the formation of a fine austenite grains via nucleation at the dislocations during reheating. The austenite grain size was more refined when samples were pre-recrystallized at 700 °C for several minutes compared to those directly heated to 850 °C, which was attributed to combined grain refinement from recrystallization and austenite phase transformation. This refined austenite grain size led to a finer bainite grain size in the cooled final product. The strength of the steel decreased slightly (∼1200 MPa), but the elongation (∼19%) and product of strength and elongation (∼23 GPa%) were significantly enhanced by the pre-recrystallization treatment. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2053-1591 |
| Relation: | https://doi.org/10.1088/2053-1591/abfc7a; https://doaj.org/toc/2053-1591; https://doaj.org/article/7a57ee2110d446be9fa91cdd11809ae0 |
| DOI: | 10.1088/2053-1591/abfc7a |
| الاتاحة: | https://doi.org/10.1088/2053-1591/abfc7a https://doaj.org/article/7a57ee2110d446be9fa91cdd11809ae0 |
| رقم الانضمام: | edsbas.D48A774B |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20531591 |
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| DOI: | 10.1088/2053-1591/abfc7a |