| Direct observations on the evolution of shear bands into cracks in metallic glass | |
| R. T. Qu; F. F. Wu; Z. F. Zhang; J. Eckert | |
| 2009 | |
| Source Publication | Journal of Materials Research
 |
| ISSN | 0884-2914 |
| Volume | 24Issue:10Pages:3130-3135 |
| Abstract | The evolution of shear bands (SBs) into cracks was observed by using a high-resolution scanning electron microscope in Zr(59)Cu(20)Al(10)Ni(8)Ti(3) metallic glassy samples after a small punch test with different strain rates. As shear strain increased along a radial SB, three distinctive regions of morphologies were found (I) bonded SB, (II) microcrack plus bonded SB, and (III) full crack. In region H with moderate shear strain, some glassy "extrusions" were also observed. Once shear offset increases to a critical value, the SB becomes a full crack. For two different SBs in one specimen, the critical shear offsets maintain approximately the same value, which sheds light on the critical shear failure condition of metallic glass. The critical shear offset was also found to be sensitive to the strain rate and a higher strain rate led to less critical shear offset. It is suggested that the structure evolution and heat evolution within a shearing SB should be responsible for the present results. |
| description.department | [qu, rui-tao; wu, fu-fa; zhang, zhe-feng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [wu, fu-fa] liaoning univ technol, sch mat & chem engn, jinzhou 121001, peoples r china. [eckert, juergen] ifw dresden, inst complex mat, d-01171 dresden, germany.;zhang, zf (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn |
| Keyword | Tensile Ductility Matrix Composites Deformation Fracture Plasticity Behavior |
| URL | 查看原文 |
| WOS ID | WOS:000270500100018 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/32251 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | R. T. Qu,F. F. Wu,Z. F. Zhang,et al. Direct observations on the evolution of shear bands into cracks in metallic glass[J]. Journal of Materials Research,2009,24(10):3130-3135. |
| APA | R. T. Qu,F. F. Wu,Z. F. Zhang,&J. Eckert.(2009).Direct observations on the evolution of shear bands into cracks in metallic glass.Journal of Materials Research,24(10),3130-3135. |
| MLA | R. T. Qu,et al."Direct observations on the evolution of shear bands into cracks in metallic glass".Journal of Materials Research 24.10(2009):3130-3135. |
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