| 题名: | Failure of Zr61Ti2Cu25Al12 bulk metallic glass under torsional loading |
| 作者: | Song, Zhen-Qiang; Ma, Evan; Xu, Jian |
| 发表日期: | 2017-7-1 |
| 摘要: | The torsional properties of the Zr61Ti2Cu25Al12 BMG have been tested using cylinder samples, including the shear yield strength, shear elastic strain limit and shear modulus. Under torsional loading, the BMG fails via a major shear band, without obvious macroscopic plasticity on the specimen surface. The shear band maintained stable propagation by a distance of similar to 300 mu m (similar to 20% of cylinder radius) before final catastrophic failure, owing to the constraint of stress gradient along the radial direction. The combined tensile, compressive and torsional properties of the Zr61Ti2Cu25Al12 BMG suggest that recent ellipse criterion and eccentric ellipse criterion are more appropriate than other well-known ones in describing the yield behavior of this BMG. The cooperative shear model underestimates the shear elastic strain limit, because of its default assumption that the yielding behavior follows the Tresca yield criterion. (C) 2017 Elsevier Ltd. All rights reserved. |
| 刊名: | INTERMETALLICS |
| Appears in Collections: | 中国科学院金属研究所_期刊论文
|
Files in This Item:
There are no files associated with this item.
|
| Recommended Citation: | |
Song, Zhen-Qiang,Ma, Evan,Xu, Jian. Failure Of Zr61ti2cu25al12 Bulk Metallic Glass Under Torsional Loading[J]. Intermetallics,2017,86:25-32.
|
|
|
