Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing
Microstructural evolutions of the 4Al alumina-forming austenitic steel after cold rolling with different reductions from 5% to 30% and then annealing were investigated using electron backscattering diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Tensile proper...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-06-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/12/2767 |
| _version_ | 1797564864915308544 |
|---|---|
| author | Chenchen Jiang Qiuzhi Gao Hailian Zhang Ziyun Liu Huijun Li |
| author_facet | Chenchen Jiang Qiuzhi Gao Hailian Zhang Ziyun Liu Huijun Li |
| author_sort | Chenchen Jiang |
| collection | DOAJ |
| description | Microstructural evolutions of the 4Al alumina-forming austenitic steel after cold rolling with different reductions from 5% to 30% and then annealing were investigated using electron backscattering diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Tensile properties and hardness were also measured. The results show that the average grain size gradually decreases with an increase in the cold-rolling reduction. The low angle grain boundaries (LAGBs) are dominant in the cold-rolled samples, but high angle grain boundaries (HAGBs) form in the annealed samples, indicating that the grains are refined under the action of dislocations. During cold rolling, high-density dislocations are initially introduced in the samples, which contributes to a large number of dislocations remaining after annealing. With the sustaining increase in cold-rolled deformation, the samples exhibit more excellent tensile strength and hardness due to the decrease in grain size and increase in dislocation density, especially for the samples subjected to 30% cold-rolling reduction. The contribution of dislocations on yield strength is more than 60%. |
| first_indexed | 2024-03-10T19:03:53Z |
| format | Article |
| id | doaj.art-16c6ffbff1e64eea9b55cffcbd5c2cdc |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:03:53Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-16c6ffbff1e64eea9b55cffcbd5c2cdc2023-11-20T04:15:19ZengMDPI AGMaterials1996-19442020-06-011312276710.3390/ma13122767Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and AnnealingChenchen Jiang0Qiuzhi Gao1Hailian Zhang2Ziyun Liu3Huijun Li4School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaDaotian High Technology Co., Ltd., Qinhuangdao 066004, ChinaSchool of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Materials Science & Engineering, Tianjin University, Tianjin 300354, ChinaMicrostructural evolutions of the 4Al alumina-forming austenitic steel after cold rolling with different reductions from 5% to 30% and then annealing were investigated using electron backscattering diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Tensile properties and hardness were also measured. The results show that the average grain size gradually decreases with an increase in the cold-rolling reduction. The low angle grain boundaries (LAGBs) are dominant in the cold-rolled samples, but high angle grain boundaries (HAGBs) form in the annealed samples, indicating that the grains are refined under the action of dislocations. During cold rolling, high-density dislocations are initially introduced in the samples, which contributes to a large number of dislocations remaining after annealing. With the sustaining increase in cold-rolled deformation, the samples exhibit more excellent tensile strength and hardness due to the decrease in grain size and increase in dislocation density, especially for the samples subjected to 30% cold-rolling reduction. The contribution of dislocations on yield strength is more than 60%.https://www.mdpi.com/1996-1944/13/12/2767alumina-forming austenitic steelcold rollingdislocation densitymechanical properties |
| spellingShingle | Chenchen Jiang Qiuzhi Gao Hailian Zhang Ziyun Liu Huijun Li Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing Materials alumina-forming austenitic steel cold rolling dislocation density mechanical properties |
| title | Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing |
| title_full | Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing |
| title_fullStr | Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing |
| title_full_unstemmed | Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing |
| title_short | Microstructure and Mechanical Properties of 4Al Alumina-Forming Austenitic Steel after Cold-Rolling Deformation and Annealing |
| title_sort | microstructure and mechanical properties of 4al alumina forming austenitic steel after cold rolling deformation and annealing |
| topic | alumina-forming austenitic steel cold rolling dislocation density mechanical properties |
| url | https://www.mdpi.com/1996-1944/13/12/2767 |
| work_keys_str_mv | AT chenchenjiang microstructureandmechanicalpropertiesof4alaluminaformingausteniticsteelaftercoldrollingdeformationandannealing AT qiuzhigao microstructureandmechanicalpropertiesof4alaluminaformingausteniticsteelaftercoldrollingdeformationandannealing AT hailianzhang microstructureandmechanicalpropertiesof4alaluminaformingausteniticsteelaftercoldrollingdeformationandannealing AT ziyunliu microstructureandmechanicalpropertiesof4alaluminaformingausteniticsteelaftercoldrollingdeformationandannealing AT huijunli microstructureandmechanicalpropertiesof4alaluminaformingausteniticsteelaftercoldrollingdeformationandannealing |