Copper Precipitation Behavior and Mechanical Properties of Cu-Bearing Ferritic Stainless Steel with Different Cr Addition

doi:10.1007/s40195-025-01814-4

IMR OpenIR

	Copper Precipitation Behavior and Mechanical Properties of Cu-Bearing Ferritic Stainless Steel with Different Cr Addition
	Li, Yifan 1,2; Ma, Shengyao 2,3; Zhang, Xinrui 2; Xi, Tong 2; Yang, Chunguang 2; Zhao, Hanyu 2; Yang, Ke 2
通讯作者	Xi, Tong(txi@imr.ac.cn) ; Yang, Chunguang(cgyang@imr.ac.cn)
	2025-01-15
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	The microstructure evolution and mechanical properties of Cu-bearing ferritic stainless steel with different Cr addition (Cr = 12, 15 and 17 wt%) were investigated. The phase transformation behavior under different cooling rate, Cu-rich precipitation behavior and its influence on the mechanical properties under different aging treatment are systematically characterized using dilatometry, differential scanning calorimeter (DSC) and transmission electron microscopy (TEM). The results indicated that the increase in Cr content narrowed the austenite phase region at high temperatures, affecting its microstructure under different cooling rates. The 12Cr-1.5Cu steel exhibited a fully austenitic phase region at high temperature and occurred apparent martensitic transformation after air cooling. Cooling rate significantly influenced the phase transition of the steels, and subsequently affected its mechanical properties. All three investigated steels showed higher strength and lower plasticity in air cooling condition compared to furnace cooling condition, due to the presence of martensite. After aging treatment, high number densities of Cu-rich precipitates were formed in steel matrix and the size of Cu-rich precipitates increased obviously with increasing aging temperature, while the tendency for number density was opposite. Fine and dispersed Cu-rich precipitates formed during low-temperature aging enhanced strength of the steels, while larger Cu-rich phases developed during high-temperature aging endowed greater ductility to the steels. Notably, the Cr content had no significant effect on the precipitation behavior of Cu-rich precipitation. These comprehensive results and analyses could provide a solid foundation for broader applications of Cu-bearing ferritic stainless steels.
关键词	Cu-bearing stainless steel Mechanical property Cu-rich precipitate Microstructure
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Medical and Industrial Cross Joint of Liaoning Province
DOI	10.1007/s40195-025-01814-4
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52101293/52171242] ; Natural Science Foundation of Medical and Industrial Cross Joint of Liaoning Province[2022-YGJC-54]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001396153600001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180897
专题	中国科学院金属研究所
通讯作者	Xi, Tong; Yang, Chunguang
作者单位	1.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450001, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Li, Yifan,Ma, Shengyao,Zhang, Xinrui,et al. Copper Precipitation Behavior and Mechanical Properties of Cu-Bearing Ferritic Stainless Steel with Different Cr Addition[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2025:13.
APA	Li, Yifan.,Ma, Shengyao.,Zhang, Xinrui.,Xi, Tong.,Yang, Chunguang.,...&Yang, Ke.(2025).Copper Precipitation Behavior and Mechanical Properties of Cu-Bearing Ferritic Stainless Steel with Different Cr Addition.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Li, Yifan,et al."Copper Precipitation Behavior and Mechanical Properties of Cu-Bearing Ferritic Stainless Steel with Different Cr Addition".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2025):13.