Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel
In order to develop a new generation cold-rolled ultra-high strength low-alloy steel, continuous annealing experiments of a Ti-0.12%, Nb-0.076% cold-rolled ultra-high strength low-alloy steel were done on a continuous annealing test machine. The influence of annealing temperature on the phase compos...
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Science Press
2015-02-01
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| Series: | 工程科学学报 |
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| Online Access: | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.02.008 |
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| author | MI Zhen-li PAN Dian-jun JIANG Hai-tao |
| author_facet | MI Zhen-li PAN Dian-jun JIANG Hai-tao |
| author_sort | MI Zhen-li |
| collection | DOAJ |
| description | In order to develop a new generation cold-rolled ultra-high strength low-alloy steel, continuous annealing experiments of a Ti-0.12%, Nb-0.076% cold-rolled ultra-high strength low-alloy steel were done on a continuous annealing test machine. The influence of annealing temperature on the phase composition, grain size, and mechanical properties of the steel was investigated at four dif-ferent annealing temperature ranges from 760℃ to 830℃. The final composition is ferrite and a small amount of bainite under 800℃ annealing and 400℃ over-aging conditions, the ferrite grain size is about 1.4 μn, and the yield strength reaches up to 700 MPa. A large number of nanometer size sub-crystal structures, a small number of dislocations, and nano-Ti and Nb precipitates are observed by scanning electron microscopy and transmission electron microscopy. Those microstructures improve the strength a lot. |
| format | Article |
| id | doaj-art-c595a4de66e34ca7acba9b5f29dad326 |
| institution | OA Journals |
| issn | 2095-9389 |
| language | zho |
| publishDate | 2015-02-01 |
| publisher | Science Press |
| record_format | Article |
| series | 工程科学学报 |
| spelling | doaj-art-c595a4de66e34ca7acba9b5f29dad3262025-08-20T02:17:04ZzhoScience Press工程科学学报2095-93892015-02-0137218518910.13374/j.issn2095-9389.2015.02.008Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steelMI Zhen-li0PAN Dian-jun1JIANG Hai-tao2Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083In order to develop a new generation cold-rolled ultra-high strength low-alloy steel, continuous annealing experiments of a Ti-0.12%, Nb-0.076% cold-rolled ultra-high strength low-alloy steel were done on a continuous annealing test machine. The influence of annealing temperature on the phase composition, grain size, and mechanical properties of the steel was investigated at four dif-ferent annealing temperature ranges from 760℃ to 830℃. The final composition is ferrite and a small amount of bainite under 800℃ annealing and 400℃ over-aging conditions, the ferrite grain size is about 1.4 μn, and the yield strength reaches up to 700 MPa. A large number of nanometer size sub-crystal structures, a small number of dislocations, and nano-Ti and Nb precipitates are observed by scanning electron microscopy and transmission electron microscopy. Those microstructures improve the strength a lot.http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.02.008high strength steellow-alloy steelannealingmechanical propertiesprecipitates |
| spellingShingle | MI Zhen-li PAN Dian-jun JIANG Hai-tao Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel 工程科学学报 high strength steel low-alloy steel annealing mechanical properties precipitates |
| title | Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel |
| title_full | Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel |
| title_fullStr | Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel |
| title_full_unstemmed | Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel |
| title_short | Typical continuous annealing technology of cold-rolled 700 MPa ultra-high strength low-alloy steel |
| title_sort | typical continuous annealing technology of cold rolled 700 mpa ultra high strength low alloy steel |
| topic | high strength steel low-alloy steel annealing mechanical properties precipitates |
| url | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.02.008 |
| work_keys_str_mv | AT mizhenli typicalcontinuousannealingtechnologyofcoldrolled700mpaultrahighstrengthlowalloysteel AT pandianjun typicalcontinuousannealingtechnologyofcoldrolled700mpaultrahighstrengthlowalloysteel AT jianghaitao typicalcontinuousannealingtechnologyofcoldrolled700mpaultrahighstrengthlowalloysteel |