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Effect of hydrogen on subsurface deformation during indentation of a bulk metallic glass
- Authors
- Yoo, Byung-Gil; Oh, Jun-Hak; Kim, Yong-Jae; Jang, Jae-il
- Issue Date
- Oct-2010
- Publisher
- Elsevier BV
- Keywords
- Glasses; Metallic; Hydrogen embrittlement; Mechanical properties; Mechanical testing
- Citation
- Intermetallics, v.18, no.10, pp 1872 - 1875
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Intermetallics
- Volume
- 18
- Number
- 10
- Start Page
- 1872
- End Page
- 1875
- ISSN
- 0966-9795
1879-0216
- Abstract
- The influence of hydrogen on the plastic deformation of bulk metallic glasses (BMGs) was analyzed by recourse to nanoindentation of subsurface deformation produced during macroscopic indentation of the as-cast and hydrogen-charged samples. Results reveal that hydrogen restricts the plasticity (that is, shear band evolution) and thus significantly enhances hardness. The deformed regions of both the as-cast and hydrogen-charged samples exhibit plastic flow softening. This study demonstrates that the hydrogen affects the plastic deformation of BMGs in a manner that is similar to structural relaxation. This is due to the similar influence both of them have on reducing the free volume content.
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Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
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Related Researcher
- Jang, Jae Il
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)