| Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process | |
| Li, Jing1; Wu, Sajian1; Ma, Ping2; Yang, Ying3; Wu, Erdong1; Xiong, Liangyin1; Liu, Shi1 | |
| Corresponding Author | Li, Jing(jingli@imr.ac.cn) |
| 2019-05-29 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 757Pages:42-51 |
| Abstract | 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. |
| Keyword | Oxide dispersion strengthened Internal oxidation process Nanometric Y-Al-O precipitates Microstructure and mechanical properties |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000470944600005 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134211 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Jing |
| Affiliation | 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 |
| Recommended Citation 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. |
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