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Estimation of the shear transformation zone size fin a bulk metallic glass through statistical a analysis of the first pop-in stresses during spherical nanoindentation
- Authors
- Choi, In-Chul; Zhao, Yakai; Yoo, Byung-Gil; Kim, Yong-Jae; Suh, Jin-Yoo; Ramamurty, Upadrasta; Jang, Jae-il
- Issue Date
- Jun-2012
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Bulk amorphous materials; Nanoindentation; Yield phenomena; Shear transformation zone
- Citation
- SCRIPTA MATERIALIA, v.66, no.11, pp.923 - 926
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 66
- Number
- 11
- Start Page
- 923
- End Page
- 926
- ISSN
- 1359-6462
- Abstract
- The size of the shear transformation zone (STZ) that initiates the elastic to plastic transition in a Zr-based bulk metallic glass was estimated by conducting a statistical analysis of the first pop-in event during spherical nanoindentation. A series of experiments led us to a successful description of the distribution of shear strength for the transition and its dependence on the loading rate. From the activation volume determined by statistical analysis the STZ size was estimated based on a cooperative shearing model.
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Related Researcher
- Jang, Jae Il
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)