期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2016.08.082
关键词
Metallic glass; Plasticity; Shear bands; Micromechanics; Defects
类别
资金
- National Natural Science Foundation of China [51401192, 51611130120, 11572249]
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University
- Fundamental Research Funds for the Central Universities [3102015ZY027, 3102015BJ (II) JGZ019]
- Aeronautical Science Foundation of China [2015ZF53072]
- Shanghai Aerospace Science and Technology Innovation Fund [SAST2016047]
- Natural Science Foundation of Shaanxi Province [2016JM5009]
- Aerospace Technology Foundation [N2014KC0068]
In the current work, the size effect to plasticity of the Zr50Cu40+xAl10-x(x=0, and 2) bulk metallic glasses has been investigated experimentally. It is found that macroscopic plasticity are affected by different of leading factors. The mean stress drop of serrated flow is positively related to the number of weak regions. With greater number of weak regions, more pronounced stress drop occurs in the serrated flow process. The experimental results suggested that fewer number of weak regions lead to larger dimple patterns area. Besides, the average spacing of primary shear bands is associated with the weak regions and the position where shear bands terminate. (C) 2016 Elsevier B.V. All rights reserved.
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