Abstract
The correlation among apparent global plasticity, Poisson's ratio, and fragility in monolithic bulk metallic glass (BMG) alloys has been investigated in the present study. The shear and bulk moduli in monolithic Cu-based BMG alloys have been measured by resonant ultrasound spectroscopy (RUS) and ultrasonic technique. The Cu43 Zr43Al7Ag7 BMG alloy showing a large apparent global plasticity (∼8%) exhibits a high Poisson's ratio when compared with that of Cu43Zr43 Al7Be7 BMG alloy. In addition, the fragility of Cu-based BMG alloys can be obtained by differential scanning calorimetry (DSC). The fragility index m of Cu43 Zr43Al7Ag7 BMG alloy is slightly larger than that of Cu43Zr43 Al7Be7 BMG alloy. The correlation between Poisson's ratio and fragility in BMG alloys can be presented by a simple relation of m - 17 = 14 (B∞/G∞ - 1). Poisson's ratio and fragility might be regarded as an important parameter that controls global plasticity of glass-forming alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 523-528 |
| Number of pages | 6 |
| Journal | Journal of Materials Research |
| Volume | 23 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2008 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Poisson's ratio and fragility of bulk metallic glasses. / Na, J. H.; Park, E. S.; Kim, Y. C.; Fleury, E.; Kim, W. T.; Kim, D. H.
In: Journal of Materials Research, Vol. 23, No. 2, 01.02.2008, p. 523-528.Research output: Contribution to journal › Article
TY - JOUR
T1 - Poisson's ratio and fragility of bulk metallic glasses
AU - Na, J. H.
AU - Park, E. S.
AU - Kim, Y. C.
AU - Fleury, E.
AU - Kim, W. T.
AU - Kim, D. H.
PY - 2008/2/1
Y1 - 2008/2/1
N2 - The correlation among apparent global plasticity, Poisson's ratio, and fragility in monolithic bulk metallic glass (BMG) alloys has been investigated in the present study. The shear and bulk moduli in monolithic Cu-based BMG alloys have been measured by resonant ultrasound spectroscopy (RUS) and ultrasonic technique. The Cu43 Zr43Al7Ag7 BMG alloy showing a large apparent global plasticity (∼8%) exhibits a high Poisson's ratio when compared with that of Cu43Zr43 Al7Be7 BMG alloy. In addition, the fragility of Cu-based BMG alloys can be obtained by differential scanning calorimetry (DSC). The fragility index m of Cu43 Zr43Al7Ag7 BMG alloy is slightly larger than that of Cu43Zr43 Al7Be7 BMG alloy. The correlation between Poisson's ratio and fragility in BMG alloys can be presented by a simple relation of m - 17 = 14 (B∞/G∞ - 1). Poisson's ratio and fragility might be regarded as an important parameter that controls global plasticity of glass-forming alloys.
AB - The correlation among apparent global plasticity, Poisson's ratio, and fragility in monolithic bulk metallic glass (BMG) alloys has been investigated in the present study. The shear and bulk moduli in monolithic Cu-based BMG alloys have been measured by resonant ultrasound spectroscopy (RUS) and ultrasonic technique. The Cu43 Zr43Al7Ag7 BMG alloy showing a large apparent global plasticity (∼8%) exhibits a high Poisson's ratio when compared with that of Cu43Zr43 Al7Be7 BMG alloy. In addition, the fragility of Cu-based BMG alloys can be obtained by differential scanning calorimetry (DSC). The fragility index m of Cu43 Zr43Al7Ag7 BMG alloy is slightly larger than that of Cu43Zr43 Al7Be7 BMG alloy. The correlation between Poisson's ratio and fragility in BMG alloys can be presented by a simple relation of m - 17 = 14 (B∞/G∞ - 1). Poisson's ratio and fragility might be regarded as an important parameter that controls global plasticity of glass-forming alloys.
UR - http://www.scopus.com/inward/record.url?scp=39749113700&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=39749113700&partnerID=8YFLogxK
U2 - 10.1557/jmr.2008.0060
DO - 10.1557/jmr.2008.0060
M3 - Article
AN - SCOPUS:39749113700
VL - 23
SP - 523
EP - 528
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 2
ER -