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Structural evolution under elastic cyclic loading in a Ti-based metallic glass
Wang, X. D.1; Song, S. L.1; Zhu, Z. W.2; Zhang, H. F.2; Ren, X. C.1
Corresponding AuthorWang, X. D.(wangxiaodi@ustb.edu.cn) ; Ren, X. C.(xcren@ustb.edu.cn)
2022-02-01
Source PublicationJOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN0022-3093
Volume577Pages:10
AbstractMultiple characterization techniques including DSC, TEM, XRD, HV and SEM were utilized to investigate the structural evolution of metallic glass (MG) under elastic cyclic loading. It is found that the relaxation enthalpy (served as the reflection of free volume contents) in the fatigued specimen was raised by similar to 5 times as compared with as-cast specimen. The cyclic loading induces the larger interatomic distance and smaller coordination number. Besides, the micmhardness reduction from similar to 545.6 +/- 15.3 to similar to 518.7 +/- 4.8 was observed in the as-cast and fatigued specimens, indicating the cyclic loading induced softening behavior. Such results reveal that the elastic cyclic loading can cause the irreversible structural change with the increase of free volume. Then the key problem of shear band formation under cyclic stress level lower than yield strength was clarified by the free volume theory.
KeywordMetallic glass Cyclic loading Free volume Shear band Rejuvenation
Funding OrganizationChina Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC)
DOI10.1016/j.jnoncrysol.2021.121263
Indexed BySCI
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2019M660455] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-011A1] ; National Natural Science Foundation of China (NSFC)[52101065]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics ; Materials Science, Multidisciplinary
WOS IDWOS:000754665000007
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173412
Collection中国科学院金属研究所
Corresponding AuthorWang, X. D.; Ren, X. C.
Affiliation1.Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, X. D.,Song, S. L.,Zhu, Z. W.,et al. Structural evolution under elastic cyclic loading in a Ti-based metallic glass[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2022,577:10.
APA Wang, X. D.,Song, S. L.,Zhu, Z. W.,Zhang, H. F.,&Ren, X. C..(2022).Structural evolution under elastic cyclic loading in a Ti-based metallic glass.JOURNAL OF NON-CRYSTALLINE SOLIDS,577,10.
MLA Wang, X. D.,et al."Structural evolution under elastic cyclic loading in a Ti-based metallic glass".JOURNAL OF NON-CRYSTALLINE SOLIDS 577(2022):10.
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