Hot Deformation Behavior and Processing Map of a Cu-Bearing 2205 Duplex Stainless Steel

doi:10.1007/s40195-019-00910-6

IMR OpenIR

	Hot Deformation Behavior and Processing Map of a Cu-Bearing 2205 Duplex Stainless Steel
	Xi, Tong; Yin, Lu; Yang, Chun-Guang; Yang, Ke
通讯作者	Yang, Chun-Guang(cgyang@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
	2019-12-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	32 期号:12 页码:1537-1548
摘要	The hot deformation behavior and processing map of Cu-bearing 2205 duplex stainless steel (2205-Cu DSS) were investigated at temperatures of 950-1150 degrees C and strain rates of 0.01-10 s(-1). The effects of Cu addition and different deformation parameters on deformation behavior were, respectively, characterized by analyzing flow curves, constitutive equations and microstructures. The results indicated that the shapes of flow curves strongly depended on the volume fraction of two phases. When deformed at low strain rate, DRV in ferrite was prompted with increase in the temperature and was further developed to continuous DRX. At high strain rate, flow localization preferentially occurred in ferrite at low deformation temperature due to the strain partitioning and relatively less fraction of ferrite. The activation energy for 2205-Cu DSS was 452 kJ/mol and was found to connect with the variation of strain, strain rate and deformation temperature. The optimum hot deformation parameters for 2205-Cu DSS were obtained in the temperature range of 1100-1150 degrees C and strain rate range of 0.1-1 s(-1) with a peak power dissipation efficiency of 41%. Flow localization was the main way to lead to flow instability. Meanwhile, the Cu-rich precipitates were generated within a few ferrite grains when deformed at temperature lower than 1000 degrees C. The interaction between dislocations and Cu-rich precipitates at high strain rate, as well as the limited DRV in ferrite and DRX in austenite, contributed to the complex microstructure and flow behavior.
关键词	Cu-bearing duplex stainless steel Hot deformation Processing map Dynamic recrystallization Dynamic recovery
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; State Key Program of National Natural Science of China ; Shenzhen-Hong Kong Technology Cooperation Funding Scheme ; Shenzhen Science and Technology Research Funding
DOI	10.1007/s40195-019-00910-6
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0300205] ; National Natural Science Foundation of China[51501188] ; National Natural Science Foundation of China[51771199] ; State Key Program of National Natural Science of China[51631009] ; Shenzhen-Hong Kong Technology Cooperation Funding Scheme[SGLH20150213143207910] ; Shenzhen Science and Technology Research Funding[JCYJ20160608153641020]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000495116000011
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：8[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/321006/136837
专题	中国科学院金属研究所
通讯作者	Yang, Chun-Guang; Yang, Ke
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Xi, Tong,Yin, Lu,Yang, Chun-Guang,et al. Hot Deformation Behavior and Processing Map of a Cu-Bearing 2205 Duplex Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(12):1537-1548.
APA	Xi, Tong,Yin, Lu,Yang, Chun-Guang,&Yang, Ke.(2019).Hot Deformation Behavior and Processing Map of a Cu-Bearing 2205 Duplex Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(12),1537-1548.
MLA	Xi, Tong,et al."Hot Deformation Behavior and Processing Map of a Cu-Bearing 2205 Duplex Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.12(2019):1537-1548.