Tailoring Strength and Ductility of an Fe-Mn-Al-C Low-Density Duplex Steel by Controlling the Cooling Path after Hot Rolling

doi:10.1002/adem.202301595

IMR OpenIR

	Tailoring Strength and Ductility of an Fe-Mn-Al-C Low-Density Duplex Steel by Controlling the Cooling Path after Hot Rolling
	Li, Zhenlei 1; Chen, Rong 2; Wang, Yi 3; Gao, Long 1; Li, Xiaowu 3
通讯作者	Li, Xiaowu(xwli@mail.neu.edu.cn)
	2023-12-15
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	8
摘要	The low-density duplex steels provide a potential for the industrial application owing to their good strength-ductility match and reduced density. In the present work, the microstructure of an Fe-8.03Mn-6.10Al-0.4C (wt%) low-density duplex steel was adjusted by controlling the cooling path after hot rolling, which is a conventional process during the production of steel sheets and strips. A microstructure of ferrite and austenite has been achieved by annealing the air-cooled samples, and the microstructure of furnace-cooled annealed samples consists of banded ferrite, austenite, and martensite. This is mainly due to the fact that the austenite is more stable by refining the grain size via embedding the needle-like alpha-ferrite. The existing of martensite and the banded microstructure in furnace-cooled annealed samples induces the occurrence of cracks during deformation, resulting in an abrupt fracture at a relatively lower strain level. However, for air-cooled annealed samples, a good ductility of duplex microstructure ensures that the deformation can be sustained up to a much higher strain level, and the transformation induced plasticity effect plays a positive role at the later deformation stage; this contributes to the occurrence of an extra work hardening rate recovery during deformation and thus to a good strength-ductility match. Controlling the cooling path after hot rolling has been verified as an effective method for improving the strength and ductility of duplex low-density steels. The effect on the microstructure and mechanical properties has been investigated. The stable duplex microstructure of ferrite and austenite obtained by air cooling and annealing is beneficial in achieving a better strength-ductility synergy.image (c) 2023 WILEY-VCH GmbH
关键词	cooling path hot rolling low-density steel mechanical properties microstructure evolution
资助者	National Natural Science Foundation of China ; Natural Science Foundation of China ; National Key Research and Development Program
DOI	10.1002/adem.202301595
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171108] ; National Natural Science Foundation of China[52275315] ; Natural Science Foundation of China[2022YFB3304801] ; National Key Research and Development Program
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001125894700001
出版者	WILEY-V C H VERLAG GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/182914
专题	中国科学院金属研究所
通讯作者	Li, Xiaowu
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automation, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Key Lab Anisotropy & Texture Mat,Minist Educ, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhenlei,Chen, Rong,Wang, Yi,et al. Tailoring Strength and Ductility of an Fe-Mn-Al-C Low-Density Duplex Steel by Controlling the Cooling Path after Hot Rolling[J]. ADVANCED ENGINEERING MATERIALS,2023:8.
APA	Li, Zhenlei,Chen, Rong,Wang, Yi,Gao, Long,&Li, Xiaowu.(2023).Tailoring Strength and Ductility of an Fe-Mn-Al-C Low-Density Duplex Steel by Controlling the Cooling Path after Hot Rolling.ADVANCED ENGINEERING MATERIALS,8.
MLA	Li, Zhenlei,et al."Tailoring Strength and Ductility of an Fe-Mn-Al-C Low-Density Duplex Steel by Controlling the Cooling Path after Hot Rolling".ADVANCED ENGINEERING MATERIALS (2023):8.