Measuring Young’s modulus of Ni-based superalloy single crystals at elevated temperatures through microindentation
✍ Scribed by Hidenari Takagi; Masami Fujiwara; Koji Kakehi
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 277 KB
- Volume
- 387-389
- Category
- Article
- ISSN
- 0921-5093
No coin nor oath required. For personal study only.
✦ Synopsis
This study reveals that the instrumented indentation testing technique is a powerful tool for extracting Young's modulus at high temperatures in advanced materials available only in small quantities due to cost or processing challenges. Young's modulus, E s , of the Ni-based superalloy single crystal CMSX-4 is evaluated by the Oliver-Pharr method at temperatures from 298 to 1073 K. The E s values near to the 1 0 0 direction are 156 GPa at 298 K and 106 GPa at 1073 K. In the 1 1 0 direction, the E s values are 225 GPa at 298 K and 173 GPa at 1073 K. These results are in good agreement with those of conventional resonant frequency measurements, cited from some sources.