NDLI: Significant plasticity enhancement of ZrCu-based bulk metallic glass composite dispersed by in situ and ex situ Ta particles

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Significant plasticity enhancement of ZrCu-based bulk metallic glass composite dispersed by in situ and ex situ Ta particles

Content Provider	Semantic Scholar
Author	Jang, Jason S. C. Li, Chuan Jiang Jian, Sheng-Rui Tsai, Ping Hung Hwang, J. D. Huang, Johnny C. Nieh, T. G.
Copyright Year	2012
Abstract	a b s t r a c t Using two-step arc melting process and suction casting, the Zr47.3Cu32Al8Ag8Ta4Si0.7-based bulk metal- lic glass composites (BMGCs) rods with ex situ added micro-sized Ta particles have been successfully fabricated. The structure and thermal properties of these BMGCs samples were examined by differen- tial scanning calorimeter (DSC) and X-ray diffraction (XRD). It was found that these BMGCs with ex situ added Ta exhibit similar thermal properties in comparison with their base alloy counterpart, with rela- tively high glass forming ability (GFA). For the mechanical study, the results of compression test show that more than 25% compressive plastic strain and 1800 MPa fracture strength at room temperature can be obtained for the 2 mm diameter rod of the ZrCu-based BMGC ex situ added 6 and 9 vol.% Ta particles, respectively. Images from SEM on the fractured surfaces show that the homogeneously distributed Ta particles (20 ± 8 m) would form semi-uniform confinement zones to restrict the shear band propaga- tion. In other words, the inter-particle free space and the size of confinement zone (mean free path of shear bands) is apparently the controlling factor in affecting the plasticity of BMGCs.
Starting Page	249
Ending Page	254
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1016/j.msea.2012.05.013
Volume Number	551
Alternate Webpage(s)	http://www2.nsysu.edu.tw/MSE/papers/Paper%20in%20PDF/240%20MSE-A%20Zr-BMG%20+Ta.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.msea.2012.05.013
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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