Fabrication and performance evaluation of CICC jacket based on modified N50 austenitic steel for CFETR magnet

doi:10.1016/j.jmrt.2023.12.278

IMR OpenIR

	Fabrication and performance evaluation of CICC jacket based on modified N50 austenitic steel for CFETR magnet
	Zhai, Ruzong 1,2,3; Zhang, Honglin 1,3; Qi, Xilun 4; Wang, Weijun 5; Chen, Xinhe 4; Xu, Bin 1,3; Sun, Mingyue 1,3
通讯作者	Xu, Bin(bxu@imr.ac.cn)
	2024
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	28 页码:3435-3448
摘要	The hot deformation behavior of modified N50 austenitic stainless steel in the temperature range 950 similar to 1250 C-degrees and strain rate range of 0.01-50/s was studied by uniaxial compression experiment. The processing map and the constitutive equation for the finite element simulation were established, and the recrystallization mechanism was discussed. The results indicated that the dominant deformation mode DDRX (discontinuous dynamic recrystallization) increased with the rise of deformation temperature while the CDRX (continuous dynamic recrystallization) was on the contrary. There is a decrease in global recrystallization with increasing strain rate, up to a threshold 1/s beyond which the global recrystallization began significantly promotion owing to not only the adiabatic heat and higher stored energy, but also quick Post-DRX mechanism induced by delay quenching. The reasonable hot working interval was determined by a hot working map, then the most suitable hot extrusion parameters (1180(degrees)C-100 mm/s) were further obtained with the help of finite element simulation, and ultimately, the industrial hot extrusion trials of N50 pipes with Post-DRX features were further completed. The tensile performance of final jacket pipes was far beyond the current mainstream low-temperature austenitic structural steel and met the requirements of the new generation of superconducting coil jacket materials.
关键词	Modified N50 steel Post-dynamic recrystallization Constitutive equation Hot processing map Finite element simulation Hot extrusion Cryogenic mechanical properties
资助者	National Key Research and Devel-opment Program ; Key Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; IMR Innovation Foundation ; LingChuang Research Project of China National Nuclear Corporation ; CNNC Science Fund for Talented Young Scholars and Youth Innovation Promotion Association, CAS
DOI	10.1016/j.jmrt.2023.12.278
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel-opment Program[2018YFA0702900] ; Key Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China[52101061] ; National Natural Science Foundation of China[52233017] ; National Natural Science Foundation of China[52203384] ; National Natural Science Foundation of China[2022-PY12] ; IMR Innovation Foundation[ZDRW-CN-2021-2-4-2] ; LingChuang Research Project of China National Nuclear Corporation ; CNNC Science Fund for Talented Young Scholars and Youth Innovation Promotion Association, CAS ; [52173305]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001154939500001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183920
专题	中国科学院金属研究所
通讯作者	Xu, Bin
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Xinxing Ductile Iron Pipes Co Ltd China, Handan 056000, Peoples R China 5.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Ruzong,Zhang, Honglin,Qi, Xilun,et al. Fabrication and performance evaluation of CICC jacket based on modified N50 austenitic steel for CFETR magnet[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,28:3435-3448.
APA	Zhai, Ruzong.,Zhang, Honglin.,Qi, Xilun.,Wang, Weijun.,Chen, Xinhe.,...&Sun, Mingyue.(2024).Fabrication and performance evaluation of CICC jacket based on modified N50 austenitic steel for CFETR magnet.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,28,3435-3448.
MLA	Zhai, Ruzong,et al."Fabrication and performance evaluation of CICC jacket based on modified N50 austenitic steel for CFETR magnet".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 28(2024):3435-3448.