Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method

doi:10.1088/2053-1591/abeea6

IMR OpenIR

	Effect of explosive compaction on microstructure of ODS FeCrAl alloy fabricated by oxidation method
	Yan,Fuzhao 1,2; Li,Jing 1; Xiong,Liangyin 1; Liu,Shi 1
通讯作者	Yan,Fuzhao()
	2021-04-01
发表期刊	Materials Research Express
卷号	8 期号:4
摘要	Abstract 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.
关键词	ODS FeCrAl alloy explosive compaction defects Y-Al-O nanoparticles prior powder boundary
DOI	10.1088/2053-1591/abeea6
语种	英语
WOS记录号	IOP:2053-1591-8-4-abeea6
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159393
专题	中国科学院金属研究所
通讯作者	Yan,Fuzhao
作者单位	1.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
推荐引用方式 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).