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Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing
Zhang, N.1; Yang, H. J.2; Shao, X. H.2
Corresponding AuthorShao, X. H.(xhshao@imr.ac.cn)
2021-10-06
Source PublicationPHILOSOPHICAL MAGAZINE LETTERS
ISSN0950-0839
Pages11
AbstractGrain refinement is significant for the mechanical properties of engineering alloys. We achieved a bi-ultrafine microstructure in an Mg-12Gd-3Y-0.5Zr alloy through equal channel angular pressing (ECAP) at 300 degrees C. The ECAP not only refined the matrix grains but also broke the large intermetallic particles into fine secondary particles and then rearranged them at the grain boundaries. These fine particles can suppress the growth of the recrystallised grains, as well as promote nucleation for recrystallisation. After four passes of ECAP, a uniform microstructure with both the matrix grain (similar to 500 nm) and the particle size (similar to 300 nm) in the ultrafine range was obtained. This unique microstructure resulted in a good combination of strength (>300MPa) and elongation to failure (>35%) at 200 degrees C, which sheds new light on refining microstructure to obtain good mechanical performance at elevated temperatures for Mg alloys.
KeywordMagnesium alloy equal channel angular pressing recrystallisation second-phase particles
Funding OrganizationAnalytical and Testing Center of Northeastern University, Shenyang, China ; Liaoning Provincial Natural Science Foundation
DOI10.1080/09500839.2021.1985733
Indexed BySCI
Language英语
Funding ProjectAnalytical and Testing Center of Northeastern University, Shenyang, China ; Liaoning Provincial Natural Science Foundation[2019-MS-335]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000705402100001
PublisherTAYLOR & FRANCIS LTD
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166552
Collection中国科学院金属研究所
Corresponding AuthorShao, X. H.
Affiliation1.Northeastern Univ, Analyt & Testing Ctr Northeastern Univ, Shenyang, Peoples R China
2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang, N.,Yang, H. J.,Shao, X. H.. Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing[J]. PHILOSOPHICAL MAGAZINE LETTERS,2021:11.
APA Zhang, N.,Yang, H. J.,&Shao, X. H..(2021).Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing.PHILOSOPHICAL MAGAZINE LETTERS,11.
MLA Zhang, N.,et al."Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing".PHILOSOPHICAL MAGAZINE LETTERS (2021):11.
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