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Effect of Strain Rate on Compressive Behavior of a Zr-Based Metallic Glass under a Wide Range of Strain Rates
Li, Wenqing1,2; Geng, Tieqiang2; Ge, Shaofan1,2; Zhu, Zhengwang2; Zhang, Long2; Li, Zhengkun2; Fu, Huameng2; Zhang, Hongwei2; Li, Hong2; Wang, Aimin2; Zhang, Haifeng2
Corresponding AuthorZhu, Zhengwang(zwzhu@imr.ac.cn) ; Zhang, Haifeng(hfzhang@imr.ac.cn)
2020-06-01
Source PublicationMATERIALS
Volume13Issue:12Pages:14
AbstractThe strain rate effect on the mechanical behavior of amorphous alloys has aroused general interest. Most studies in this area have focused on quasi-static and high strain-rate compressive deformations. However, experimental results have been few, or even non-existent, under a moderate strain-rate loading. This article extends the traditional split Hopkinson pressure bar (SHPB) technique to characterize compressive deformation of an amorphous alloy at medium strain rates. The compressive behavior of Zr(65.25)Cu(21.75)Al(8)Ni(4)Nb(1)amorphous alloy shows a negative strain rate effect on the yield strength with a quasi-static, moderate to high strain-rate range, and the fracture angle increases from 44 degrees at 10(-5)s(-1)to 60 degrees at 4000 s(-1)as strain rate increases(.)Herein, we introduce a modified cooperative shear model to describe the compressive behavior of the current amorphous alloy under a broad strain rate range. The model predicts that the normalized yield strength will linearly descend with logarithmic strain rate when the strain rate is less than a critical strain rate, however, which rapidly decreases linearly with the square of the strain rate at high strain rates. The predicted data of the model are highly consistent with the current experimental results. These findings provide support for future engineering applications of amorphous alloys.
Keywordamorphous alloy strain rate yield strength free volume thermal softening SHPB
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Science and Technology on Transient Impact Laboratory ; LiaoNing Revitalization Talents Program ; Shenyang Amorphous Metal Manufacturing Co., Ltd.
DOI10.3390/ma13122861
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program[2018YFB0703402] ; National Natural Science Foundation of China[51790484] ; National Natural Science Foundation of China[U1738101] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Science and Technology on Transient Impact Laboratory[6142606192208] ; LiaoNing Revitalization Talents Program[XLYC1802078] ; LiaoNing Revitalization Talents Program[XLYC1807062] ; Shenyang Amorphous Metal Manufacturing Co., Ltd.
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000553463800001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140049
Collection中国科学院金属研究所
Corresponding AuthorZhu, Zhengwang; Zhang, Haifeng
Affiliation1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, Wenqing,Geng, Tieqiang,Ge, Shaofan,et al. Effect of Strain Rate on Compressive Behavior of a Zr-Based Metallic Glass under a Wide Range of Strain Rates[J]. MATERIALS,2020,13(12):14.
APA Li, Wenqing.,Geng, Tieqiang.,Ge, Shaofan.,Zhu, Zhengwang.,Zhang, Long.,...&Zhang, Haifeng.(2020).Effect of Strain Rate on Compressive Behavior of a Zr-Based Metallic Glass under a Wide Range of Strain Rates.MATERIALS,13(12),14.
MLA Li, Wenqing,et al."Effect of Strain Rate on Compressive Behavior of a Zr-Based Metallic Glass under a Wide Range of Strain Rates".MATERIALS 13.12(2020):14.
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