| Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory | |
| Zhao, J. X.1,3; Zhang, Z. F.2; Chen, Y. F.1,3; Gong, J. M.1,3 | |
| Corresponding Author | Zhao, J. X.(jxzhaoimr@njtech.edu.cn) |
| 2020-03-01 | |
| Source Publication | JOURNAL OF NON-CRYSTALLINE SOLIDS
 |
| ISSN | 0022-3093 |
| Volume | 531Pages:8 |
| Abstract | The shear band evolution process induced by different aspect ratios was investigated by experiments and hydrostatic-stress embedded free-volume theory. It was found that specimen with lower aspect ratio displayed a higher compressive plasticity since the shear band propagation was confined by the machine head in a way of preventing the sample from fracturing along one major shear band. Hydrostatic-stress embedded free-volume theory was incorporated into ABAQUS as a user material subroutine UMAT. Numerical method was performed to reveal the shear band evolution caused by different aspect ratios. There was a good agreement between experiments and simulations. Furthermore, simulations demonstrated that sample with smaller aspect ratios yielded a relatively lower strain localization level, leading to a correspondingly stable plastic deformation process. Compared with the viscoelastic model, it showed that the current model could better describe shear band evolution history. |
| Keyword | Metallic glass Shear band Aspect ratio Plasticity Hydrostatic-stress embedded free-volume theory |
| Funding Organization | Nanjing Tech University |
| DOI | 10.1016/j.jnoncrysol.2019.119861 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Nanjing Tech University[3827400243] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000527022700015 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138553 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhao, J. X. |
| Affiliation | 1.Nanjing Tech Univ, Sch Mech & Power Engn, 30 Puzhu Rd, Nanjing 211816, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Jiangsu Key Lab Design & Manufacture Extreme Pres, Nanjing 210000, Peoples R China |
| Recommended Citation GB/T 7714 | Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,et al. Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2020,531:8. |
| APA | Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,&Gong, J. M..(2020).Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory.JOURNAL OF NON-CRYSTALLINE SOLIDS,531,8. |
| MLA | Zhao, J. X.,et al."Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory".JOURNAL OF NON-CRYSTALLINE SOLIDS 531(2020):8. |
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