Mechanical Behavior of Zr．based Bulk Metallic Glass under Quasi-static Bending Stress
[1]LI Fushan,KONG Chao,YANG Huizhi,et al.Mechanical Behavior of Zr．based Bulk Metallic Glass under Quasi-static Bending Stress[J].Journal of Zhengzhou University (Engineering Science),2009,30(04):89-92.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30
Number of periods:
2009年04期
Page number:
89-92
Column:
Public date:
1900-01-01
- Title:
- Mechanical Behavior of Zr．based Bulk Metallic Glass under Quasi-static Bending Stress
- CLC:
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- DOI:
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- Abstract:
- The deformation and fracture behavior under bending of bulk metallic glass Zr65 Cul5 Nilo A1lo wasstudied using three—point bending machine and scanning electron microscopy(SEM)at room temperature．The results indicate that the samples experience elastic and plastic deformation process before fracture，and noobvious serrated rheological change and work hardening is found during plastic deformation．The biggest deflection value of specimens reaches 4．1 1 mm，which exhibits better plasticity．Shear bands do not propagate a—long the direction of theoretical maximum stress because of complex stress state．The fracture surface is typicalvein—pattern in compressive stress regions，which is the same as fracture surface in compressive test．Corn—plex reticular patterns are observed under different stress states in tension regions，and micro—scale voids andcracks exit along the shear bands，showing that the formation of shear bands is associated with free volume．
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Last Update:
1900-01-01