The deformation behavior and fracture toughness of single crystal YSZ(111) by indentation.
Saved in:
| Title: | The deformation behavior and fracture toughness of single crystal YSZ(111) by indentation. |
|---|---|
| Authors: | Yen, Cheng-Yo1, Jian, Sheng-Rui2 srjian@gmail.com, Tseng, Yu-Chin3, Juang, Jenh-Yih3 jyjuang@g2.nctu.edu.tw |
| Source: | Journal of Alloys & Compounds. Feb2018, Vol. 735, p2423-2427. 5p. |
| Subjects: | Yttrium, Dislocation loops, Dislocations in crystals, Deformations (Mechanics), Indentation (Materials science), Zirconium oxide, Crystallography |
| Abstract: | The nano-scale deformation behaviors and indentation-induced fracture features of the (111)-oriented yttrium-stabilized zirconia single crystal (YSZ(111)) were investigated by Berkovich and micro-Vicker indentations, respectively. The load-displacement curves in the Berkovich nano-indentation experiments evidently exhibited indentation-induced single “pop-in” phenomenon during loading, indicating that the nano-scale deformation in the YSZ(111) crystals is due primarily to the activities of dislocation nucleation and propagation. Based on this scenario, the number of nanoindentation-induced dislocation loops giving rise to the pop-in event was estimated to be around 2 × 10 5 with a critical radius of ∼2 nm. The hardness and Young's modulus of YSZ(111) single crystal obtained by the continuous contact stiffness measurements (CSM) mode were 22.3 ± 1.1 GPa and 270.6 ± 8.5 GPa, consistent with those reported previously in the literature. In addition, the fracture toughness of YSZ(111) single crystal was estimated to be about 1.4–1.6 MPa m 1/2 . [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
