Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment

doi:10.1016/j.jnucmat.2022.154023

IMR OpenIR

	Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment
	Zhai, Ruzong 1,2,3; Zhang, Honglin 1,3; Liu, Sheng 1,2,3; Sun, Mingyue 1,3; Sheng, Shaolong 4; Xu, Bin 1,3
通讯作者	Xu, Bin(bxu@imr.ac.cn)
	2022-12-01
发表期刊	JOURNAL OF NUCLEAR MATERIALS
ISSN	0022-3115
卷号	571 页码:12
摘要	Nitrogen strengthened stainless steel named N50 fully meets the strength demand of developing novel alloys for more powerful fusion reactor applications in superconducting coil armor materials. The detailed evolution of microstructure and its resultant effect on tensile properties of N50 steel with two different C contents after aging at 650 degrees C were investigated. The results indicated that the cryogenic ductility of 0.04 wt % C steel decreased significantly with the extension of aging time, while the ductility of 0.01 wt % C steel remained stable. Bulk primary MX precipitates and Z phases are distributed in the matrix af-ter solution annealing. After aging treatment, the flake M23C6 mostly occupies the grain boundaries of 0.04 wt % C steel, while the smaller cubical Z phases were the main intergranular precipitates in the 0.01 wt % C steel. The higher carbon content increases the nucleation driving force of M23C6 and con-tributes to its more precipitations after aging. The larger intergranular M23C6 in 0.04 wt % C steel leads to its brittle fracture features. While the stable intergranular Z phases in 0.01 wt % C steel obtained rela-tively excellent low-temperature plasticity. Serving as a superconducting coil armor material, the carbon content of N50 steel should be limited to acquire better cryogenic mechanical properties by eliminating the precipitation of intergranular M23C6.(c) 2022 Elsevier B.V. All rights reserved.
关键词	N50 steel Aging treatment M 23 C 6 Z phase Cryogenic tensile properties
资助者	National Key Research and Development Program ; Key Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; IMR Innovation Foundation ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS
DOI	10.1016/j.jnucmat.2022.154023
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2017YFE0301403] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-4-2] ; National Natural Science Foundation of China[52173305] ; National Natural Science Foundation of China[52101061] ; China Postdoctoral Science Foundation[2021M703276] ; IMR Innovation Foundation[2022-PY12] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC0400000] ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS
WOS研究方向	Materials Science ; Nuclear Science & Technology
WOS类目	Materials Science, Multidisciplinary ; Nuclear Science & Technology
WOS记录号	WOS:000872389200001
出版者	ELSEVIER
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176375
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, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Ruzong,Zhang, Honglin,Liu, Sheng,et al. Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment[J]. JOURNAL OF NUCLEAR MATERIALS,2022,571:12.
APA	Zhai, Ruzong,Zhang, Honglin,Liu, Sheng,Sun, Mingyue,Sheng, Shaolong,&Xu, Bin.(2022).Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment.JOURNAL OF NUCLEAR MATERIALS,571,12.
MLA	Zhai, Ruzong,et al."Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment".JOURNAL OF NUCLEAR MATERIALS 571(2022):12.