Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process

doi:10.1016/j.msea.2019.04.088

IMR OpenIR

	Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process
	Li, Jing 1; Wu, Sajian 1; Ma, Ping 2; Yang, Ying 3; Wu, Erdong 1; Xiong, Liangyin 1; Liu, Shi 1
通讯作者	Li, Jing(jingli@imr.ac.cn)
	2019-05-29
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	757 页码:42-51
摘要	The fabrication of oxide dispersion strengthened (ODS) FeCrAl alloys by an innovative internal oxidation process is presented herein. The internal oxidation process for a precursor ODS FeCrAl alloy powder consists of two consecutive procedures. Active Y is segregated and enriched on the surface and grain boundaries of the ferritic powder during the first vacuum treatment. Yttrium oxide dispersoids are preferentially generated during the next oxidation treatment and become the precursors for the nanometric oxide precipitates in the subsequent hot consolidation. Nanometric Y2O3 and Y-Al-O precipitates are observed in the nominal compositions of Fe-16C-4.5Al-2W-0.5Ti-0.5V-0.2Y, Fe-16Cr-4.5Al-2W-0.5Ti-0.5V-0.5Y and Fe-14Cr-4.5Al-2W-0.5Ti-0.25Zr-0.8Y alloys and show a wide size distribution range from less than 10 nm to a maximum of 400 nm. No observable carbide, nitride inclusions or Al2O3 particles are identified. The improvement in the tensile strength of ODS alloys fabricated by the oxidation process is attributed to the dispersed nanometric oxide precipitates. The good ductility of the alloys is ascribed to the deficiency of ultrafine grains.
关键词	Oxide dispersion strengthened Internal oxidation process Nanometric Y-Al-O precipitates Microstructure and mechanical properties
资助者	Ministry of Science and Technology of the Peoples Republic of China ; China General Nuclear Power Group ; Shenyang Municipal Bureau of Science and Technology
DOI	10.1016/j.msea.2019.04.088
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of the Peoples Republic of China[2015ZX06004001] ; China General Nuclear Power Group[4500096267] ; China General Nuclear Power Group[3100069733] ; Shenyang Municipal Bureau of Science and Technology
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000470944600005
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：21[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/321006/134211
专题	中国科学院金属研究所
通讯作者	Li, Jing
作者单位	1.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Mat Special Environm Div, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Anhui Univ Technol, Anal & Testing Cent, Hefei 243002, Anhui, Peoples R China 3.China Nucl Power Technol Res Inst, ATF Res & Dev Team, Shenzhen 518000, Peoples R China
推荐引用方式 GB/T 7714	Li, Jing,Wu, Sajian,Ma, Ping,et al. Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,757:42-51.
APA	Li, Jing.,Wu, Sajian.,Ma, Ping.,Yang, Ying.,Wu, Erdong.,...&Liu, Shi.(2019).Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,757,42-51.
MLA	Li, Jing,et al."Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 757(2019):42-51.