Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling
Using the Mn-Nb-B low carbon bainite high strength steel with the reducing production technology as the research target, the deformation behavior and phase transformation behavior were studied by the thermal simulation testing machine. Combining with the characteristics of the medium and heavy plate...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2016-07-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.07.005 |
| _version_ | 1797966943142019072 |
|---|---|
| author | WANG Bing-xing DONG Fu-zhi WANG Zhao-dong WANG Guo-dong |
| author_facet | WANG Bing-xing DONG Fu-zhi WANG Zhao-dong WANG Guo-dong |
| author_sort | WANG Bing-xing |
| collection | DOAJ |
| description | Using the Mn-Nb-B low carbon bainite high strength steel with the reducing production technology as the research target, the deformation behavior and phase transformation behavior were studied by the thermal simulation testing machine. Combining with the characteristics of the medium and heavy plate production line, the controlled rolling and controlled cooling technology based on ultra-fast cooling were designed to produce low cost high strength construction machinery steel with superior comprehensive mechanical properties. The strengthening mechanisms such as grain refinement strengthening, precipitation strengthening are effective to produce the Mn-Nb-B low carbon bainite high strength steel. The yield strength and tensile strength of the product reach to 678MPa and 756 MPa respectively, the elongation <i>A</i><sub>50</sub> is 33% and the impact energy at -20℃ is 261J. The microstructure of the steel is composed of granular bainite, acicular ferrite and lath bainite. A large number of fine, point, granular M/A constituents and dislocation structures dispersively distributed inside the matrix, and also tiny and dispersed (Nb,Ti) (C,N) precipitates are observed by transmission electron microscopy. |
| first_indexed | 2024-04-11T02:23:20Z |
| format | Article |
| id | doaj.art-0ed7ef36b89f44f39ed22606d4c72861 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:23:20Z |
| publishDate | 2016-07-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-0ed7ef36b89f44f39ed22606d4c728612023-01-02T23:08:42ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812016-07-01447263110.11868/j.issn.1001-4381.2016.07.00520160705Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast CoolingWANG Bing-xing0DONG Fu-zhi1WANG Zhao-dong2WANG Guo-dong3The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaUsing the Mn-Nb-B low carbon bainite high strength steel with the reducing production technology as the research target, the deformation behavior and phase transformation behavior were studied by the thermal simulation testing machine. Combining with the characteristics of the medium and heavy plate production line, the controlled rolling and controlled cooling technology based on ultra-fast cooling were designed to produce low cost high strength construction machinery steel with superior comprehensive mechanical properties. The strengthening mechanisms such as grain refinement strengthening, precipitation strengthening are effective to produce the Mn-Nb-B low carbon bainite high strength steel. The yield strength and tensile strength of the product reach to 678MPa and 756 MPa respectively, the elongation <i>A</i><sub>50</sub> is 33% and the impact energy at -20℃ is 261J. The microstructure of the steel is composed of granular bainite, acicular ferrite and lath bainite. A large number of fine, point, granular M/A constituents and dislocation structures dispersively distributed inside the matrix, and also tiny and dispersed (Nb,Ti) (C,N) precipitates are observed by transmission electron microscopy.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.07.005TMCPultra-fast coolinglow carbon bainitemicrostructuremechanical property |
| spellingShingle | WANG Bing-xing DONG Fu-zhi WANG Zhao-dong WANG Guo-dong Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling Cailiao gongcheng TMCP ultra-fast cooling low carbon bainite microstructure mechanical property |
| title | Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling |
| title_full | Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling |
| title_fullStr | Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling |
| title_full_unstemmed | Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling |
| title_short | Microstructure and Property of Mn-Nb-B Low Carbon Bainite High Strength Steel Under Ultra-fast Cooling |
| title_sort | microstructure and property of mn nb b low carbon bainite high strength steel under ultra fast cooling |
| topic | TMCP ultra-fast cooling low carbon bainite microstructure mechanical property |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.07.005 |
| work_keys_str_mv | AT wangbingxing microstructureandpropertyofmnnbblowcarbonbainitehighstrengthsteelunderultrafastcooling AT dongfuzhi microstructureandpropertyofmnnbblowcarbonbainitehighstrengthsteelunderultrafastcooling AT wangzhaodong microstructureandpropertyofmnnbblowcarbonbainitehighstrengthsteelunderultrafastcooling AT wangguodong microstructureandpropertyofmnnbblowcarbonbainitehighstrengthsteelunderultrafastcooling |