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The formation of the complex oxide in Ni-based alloy powder during mechanical milling and heat treatment
Mao, Zhe1,2,3; Xiong, Liangyin1,3; Liu, Shi1,3
Corresponding AuthorXiong, Liangyin(lyxiong@imr.ac.cn) ; Liu, Shi(sliu@imr.ac.cn)
2021-10-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume879Pages:7
AbstractNi-based oxide dispersion strengthening (ODS) alloys fabricated by mechanical alloying (MA) and hot isostatic pressing (HIP) improve mechanical properties by adding yttria as a dispersoid. The evolution of the additive Y2O3 particles was studied by scanning electron microscope (SEM) for the powder milled for 5 h, 20 h, 40 h, and the un-milling powder. The samples of powders after the mechanical milling and the heat treatment at 1175 degrees C for 3 h corresponding to HIP were observed by high-resolution transmission electron microscopes (HRTEM). In the process of the mechanical alloying, the Y2O3 crystallites underwent dispersion, dissolution, and partly transformed into YCrO3 and Y2Ti2O7 particles. A small amount of the complex oxide particles could be produced in the process of mechanical milling. A high number density of complex oxide particles precipitated and coarsened in the powder after the heat treatment. Mechanical milling could induce the formation of complex oxide particles because of their formation energies. The difference in size of YCrO3 and Y2Ti2O7 particles in the powder after the heat treatment mainly attribute to diffusion coefficient, solubility, and the interfacial energy. (C) 2021 Elsevier B.V. All rights reserved.
KeywordNi-based ODS alloy powder Mechanical milling Oxide particle Dissolution Precipitation
DOI10.1016/j.jallcom.2021.160333
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000662786500003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160449
Collection中国科学院金属研究所
Corresponding AuthorXiong, Liangyin; Liu, Shi
Affiliation1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Mao, Zhe,Xiong, Liangyin,Liu, Shi. The formation of the complex oxide in Ni-based alloy powder during mechanical milling and heat treatment[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,879:7.
APA Mao, Zhe,Xiong, Liangyin,&Liu, Shi.(2021).The formation of the complex oxide in Ni-based alloy powder during mechanical milling and heat treatment.JOURNAL OF ALLOYS AND COMPOUNDS,879,7.
MLA Mao, Zhe,et al."The formation of the complex oxide in Ni-based alloy powder during mechanical milling and heat treatment".JOURNAL OF ALLOYS AND COMPOUNDS 879(2021):7.
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