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- Title
EFFECT OF STRUCTURAL RELAXATION ON THE DEFORMATION BEHAVIOR OF A Zr<sub>64.13</sub>Cu<sub>15.75</sub>Ni<sub>10.12</sub>Al<sub>10</sub> BULK METALLIC GLASS UNDER NANOINDENTATION.
- Authors
JIANSHENG GU; BINGCHEN WEI; TAIHUA ZHANG; YIHUI FENG; YANPING HU; ZHIWEI SUN
- Abstract
Structural relaxation by isothermal annealing below the glass transition temperature is conducted on a Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass. The effect of structural relaxation on thermal and mechanical properties was investigated by differential scanning calorimetry and instrumented nanoindentation. The recovery of the enthalpy in the DSC curves indicates that thermally unstable defects were annihilated through structural relaxation. During nanoindentation, the structural relaxation did not have a significant influence on the serrated plastic flow behavior. However, Structural relaxation shows an obvious effect in increasing both the hardness and elastic modulus, which is attributed to the annihilation of thermally unstable defects that resulted from the relaxation.
- Subjects
STRESS relaxation (Mechanics); METALLIC glasses; STRENGTH of materials; DEFORMATIONS (Mechanics); GLASS transition temperature; PHASE transitions; CALORIMETRY
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2010, Vol 24, Issue 15/16, p2320
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979210064861