Bi-modal Structure of Copper via Room-Temperature Partial Recrystallization After Cryogenic Dynamic Compression
SCIE
SCOPUS
- Title
- Bi-modal Structure of Copper via Room-Temperature Partial Recrystallization After Cryogenic Dynamic Compression
- Authors
- Dong-Hyun Ahn; Dong Jun Lee; Minju Kang; Lee Ju Park; Lee, S; Kim, HS
- Date Issued
- 2016-04
- Publisher
- Springer
- Abstract
- Pure copper was compressed at high strain rates (over similar to 3 x 10(3) s(-1)) under liquid nitrogen. This deformation resulted in bi-modal microstructures of ultrafine grains and abnormally grown micro grains, and in greater hardness (by similar to 30 Hv) than room-temperature, dynamically deformed copper. This bi-modal microstructure is attributable to partial recrystallization at room temperature, activated by high-energy states and by twins generated at high Zener-Hollomon parameter conditions. This result demonstrates a new approach for producing bi-modally structured materials.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29984
- DOI
- 10.1007/S11661-016-3326-9
- ISSN
- 1073-5623
- Article Type
- Article
- Citation
- Metallurgical and Material Transaction A, vol. 47A, no. 4, page. 1600 - 1606, 2016-04
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