| Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses | |
| Qu Ruitao1,2; Wang Xiaodi1; Wu Shaojie1; Zhang Zhefeng1 | |
| Corresponding Author | Qu Ruitao(rtqu@nwpu.edu.cn) |
| 2021-04-11 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 57Issue:4Pages:453-472 |
| Abstract | Plastic deformation of metallic glasses (MGs) at room temperature usually localizes into shear bands. The shear banding behavior dominates the deformation and fracture mechanisms of MGs and affects their mechanical properties (e. g., strength, plasticity, fracture toughness, fatigue properties, etc.). The shear banding behavior is of vital importance for understanding and improving mechanical properties of MGs; therefore, studies on shear bands have been long-standing hot topics in the MG field. In this paper, based on the previous studies of shear banding behaviors in various MGs, the mechanisms of shear band propagation, cracking, and unstable fracture under monotonic and cyclic loadings are elucidated. The experimental evidence of progressive shear band propagation under uniaxial loading is provided and the mechanisms of shear band cracking under compression are revealed. It is found that the "cold"fracture of shear band can occur when reducing sample size, adding external confinement, or decreasing the testing temperature to stabilize the shear band propagation. Under cyclic loading, the shear-band-mediated fatigue crack initiation and cracking mechanisms are confirmed. Furthermore, the fragmentation in brittle MGs under compression should be caused by split cracking from defects. The effect of sample size on competition between shearing and splitting for brittle MGs is also discussed. Finally, the significant role of external defects (e.g., notches) on shear banding behavior is described and a "defect engineering"strategy for tailoring the mechanical properties of MGs is proposed. |
| Keyword | metallic glass shear band crack notch size effect |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Liaoning Revitalization Talents Program |
| DOI | 10.11900/0412.1961.2020.00428 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51771205] ; Natural Science Foundation of Liaoning Province[2020-MS-011] ; Liaoning Revitalization Talents Program[XLYC1808027] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000636641500008 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/162411 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Qu Ruitao |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China |
| Recommended Citation GB/T 7714 | Qu Ruitao,Wang Xiaodi,Wu Shaojie,et al. Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses[J]. ACTA METALLURGICA SINICA,2021,57(4):453-472. |
| APA | Qu Ruitao,Wang Xiaodi,Wu Shaojie,&Zhang Zhefeng.(2021).Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses.ACTA METALLURGICA SINICA,57(4),453-472. |
| MLA | Qu Ruitao,et al."Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses".ACTA METALLURGICA SINICA 57.4(2021):453-472. |
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