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

文献类型：期刊论文

作者Li, Jing3; Wu, Sajian3; Ma, Ping2; Yang, Ying1; Wu, Erdong3; Xiong, Liangyin3; Liu, Shi3
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2019-05-29
卷号757页码:42-51
ISSN号0921-5093
关键词Oxide dispersion strengthened Internal oxidation process Nanometric Y-Al-O precipitates Microstructure and mechanical properties
DOI10.1016/j.msea.2019.04.088
通讯作者Li, Jing(jingli@imr.ac.cn)
英文摘要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.
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
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000470944600005
资助机构Ministry of Science and Technology of the Peoples Republic of China ; China General Nuclear Power Group ; Shenyang Municipal Bureau of Science and Technology
源URL[http://ir.imr.ac.cn/handle/321006/134210]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Jing
作者单位1.China Nucl Power Technol Res Inst, ATF Res & Dev Team, Shenzhen 518000, Peoples R China
2.Anhui Univ Technol, Anal & Testing Cent, Hefei 243002, Anhui, Peoples R China
3.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Mat Special Environm Div, Inst Met Res, Shenyang 110016, Liaoning, 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.

入库方式： OAI收割

来源：金属研究所

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