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Characterization of oxide dispersoids and mechanical properties of 14Cr-ODS FeCrAl alloys
Wu, Sajian; Li, Jing; Li, Wuhui; Liu, Shi
2020-01-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
Volume814
AbstractTwo variants of 14-Cr oxide dispersion strengthened FeCrAl alloys are fabricated by MA method. The morphology, phase and oxide/matrix interface structure of the nano-oxide dispersoids in both alloys are characterized by TEM, HRTEM, TKD and XRD. Almost all the small precipitates in Fe-14Cr-4.5Al-2W-0.4Ti-0.4Y alloy are identified as orthorhombic YAlO3 particles. In Fe-14Cr-4.5Al-2W-0.4Ti-0.3Zr-0.4Y ODS alloy, Y-2(Zr0.4Ti0.6)(2)O-7 particle with better coherent relationship with the matrix is found. Almost 23% Y-2(Zr0.4Ti0.6)(2)O-7 and YAlO3 particles coexist, resulting in refinement of average diameter of oxide dispersoids and improvement of mechanical strength. Tensile tests from room temperature to 1000 degrees C demonstrate the attainment of strength-toughness matching in these ODS FeCrAl alloys. The inter-granular fracture after the tensile tests at elevated temperature indicates that grain boundary sliding may be the dominant mechanism for deformation. (C) 2019 Elsevier B.V. All rights reserved.
DOI10.1016/j.jallcom.2019.152282
WOS IDWOS:000490765400012
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83205
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wu, Sajian,Li, Jing,Li, Wuhui,et al. Characterization of oxide dispersoids and mechanical properties of 14Cr-ODS FeCrAl alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,814.
APA Wu, Sajian,Li, Jing,Li, Wuhui,&Liu, Shi.(2020).Characterization of oxide dispersoids and mechanical properties of 14Cr-ODS FeCrAl alloys.JOURNAL OF ALLOYS AND COMPOUNDS,814.
MLA Wu, Sajian,et al."Characterization of oxide dispersoids and mechanical properties of 14Cr-ODS FeCrAl alloys".JOURNAL OF ALLOYS AND COMPOUNDS 814(2020).
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