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Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method
Yan,Fuzhao1,2; Li,Jing1; Xiong,Liangyin1; Liu,Shi1
Corresponding AuthorYan,Fuzhao()
2021-04-01
Source PublicationMaterials Research Express
Volume8Issue:4
AbstractAbstract A fabrication process of 14Cr ODS FeCrAl alloy including direct oxidation treatment, explosive compaction and vacuum post-sintering was proposed herein. A thin oxide layer formed on the powder surface during a low-temperature oxidation treatment was crushed in the explosive compaction, resulting in the redistribution of oxides at prior powder boundary (PPB) and the subsequent formation of an exclusive iron oxide layer between the grains of compacted materials. A large number of defects (dislocations and grain boundaries) were also produced in the compacted particles. Through characterizing the evolution of oxide dispersoids during the course of fabrication, the contribution of explosive compaction to dislocations, nanoscale precipitates and mechanical properties was clarified. The results show that the iron oxide layer became the container for transporting oxygen and was dissolved during the post-sintering, which affected the composition of nanoscale precipitates. The high-density dislocations not only became the rapid diffusion paths of oxygen, aluminum and yttrium atom, but also became the preferential sites of Y-Al-O precipitation. With the manufacturing method, the more uniform distribution of oxide nanoparticles and the higher microhardness of ODS alloy were obtained.
KeywordODS FeCrAl alloy explosive compaction defects Y-Al-O nanoparticles prior powder boundary
DOI10.1088/2053-1591/abeea6
Language英语
WOS IDIOP:2053-1591-8-4-abeea6
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159393
Collection中国科学院金属研究所
Corresponding AuthorYan,Fuzhao
Affiliation1.Materials for Special Environments Division, CAS Key Laboratory of Nuclear Materials and Safety Assessment, Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
Recommended Citation
GB/T 7714
Yan,Fuzhao,Li,Jing,Xiong,Liangyin,et al. Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method[J]. Materials Research Express,2021,8(4).
APA Yan,Fuzhao,Li,Jing,Xiong,Liangyin,&Liu,Shi.(2021).Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method.Materials Research Express,8(4).
MLA Yan,Fuzhao,et al."Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method".Materials Research Express 8.4(2021).
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