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Microstructure evolution and yield strength improvement of a low carbon medium manganese steel experienced intercritical annealing, pre-straining and tempering

文献类型：期刊论文

作者Bi, Nannan3,4; Liang, Juhua4; Wang, Xingfu4; Kang, Tao1,2; Han, Fusheng4
刊名MATERIALS CHARACTERIZATION
出版日期2022-12-01
卷号194
ISSN号1044-5803
关键词Medium manganese steel Intercritical annealing Pre -strain Microstructure evolution Mechanical property
DOI10.1016/j.matchar.2022.112439
通讯作者Liang, Juhua(liangjuhua0721@126.com) ; Han, Fusheng(fshan@issp.ac.cn)
英文摘要The microstructure evolution and mechanical properties of a 0.15C1.2Si10Mn0.5 V medium manganese steel after intercritical annealing, pre-straining and tempering treatment are systematically analyzed. An intercritical annealing yields a microstructure containing ultrafine gamma + alpha coexisting structure while final tempering reduces martensitic supersaturation, which is beneficial to the ductility of the steel. The applied pre-strains between the two processes cause a part of unstable banded austenite in hot rolled state prematurely to transform into lath martensite that divides the coarse banded austenite into smaller ones. When the pre-strain is 0.02, there are about 21% strain-induced martensite produced in the microstructure and the steel exhibits the best comprehensive mechanical properties with the yield strength of 1264 MPa, tensile strength of 1506 MPa and total elongation of 19%. Actually, the increase in yield strength under pre-strains should be ascribed to dislocation strengthening in the strain-induced martensite and the precipitation strengthening of vanadium carbides during the deformation and subsequent tempering.
WOS关键词MECHANICAL-PROPERTIES ; RETAINED AUSTENITE ; TENSILE BEHAVIOR ; MARTENSITE ; PRECIPITATION ; DUCTILITY ; TEMPERATURE ; STABILITY ; TOUGHNESS ; MODEL
资助项目National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province of China ; Science and Technology Program of Inner Mongolia Autonomous Region ; [52001304] ; [2008085QE259] ; [2108085ME142] ; [2022YFDZ0004]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE INC
WOS记录号WOS:000882077600003
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province of China ; Science and Technology Program of Inner Mongolia Autonomous Region
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/130355]  
专题中国科学院合肥物质科学研究院
通讯作者Liang, Juhua; Han, Fusheng
作者单位1.China North Vehicle Res Inst, Beijing 100072, Peoples R China
2.Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
4.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Bi, Nannan,Liang, Juhua,Wang, Xingfu,et al. Microstructure evolution and yield strength improvement of a low carbon medium manganese steel experienced intercritical annealing, pre-straining and tempering[J]. MATERIALS CHARACTERIZATION,2022,194.
APA Bi, Nannan,Liang, Juhua,Wang, Xingfu,Kang, Tao,&Han, Fusheng.(2022).Microstructure evolution and yield strength improvement of a low carbon medium manganese steel experienced intercritical annealing, pre-straining and tempering.MATERIALS CHARACTERIZATION,194.
MLA Bi, Nannan,et al."Microstructure evolution and yield strength improvement of a low carbon medium manganese steel experienced intercritical annealing, pre-straining and tempering".MATERIALS CHARACTERIZATION 194(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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