Abstract
In this research, some nondestructive ultrasonic techniques were employed to inquire into the effect of microstructural changes induced by thermal aging and cold work on the ultrasonic response. As thermal embrittlement is a risk to the safety of nuclear power plants, a nondestructive detection method has to be developed for on-site monitoring. The austenitic stainless steel with ffi-ferrite specimens were used to study the behavior of microstructural changes caused by age-treating and cold work and then examined by the velocity, attenuation, and nonlinear ultrasonic technique. The variations of the linear and the nonlinear ultrasonic parameters were related to the microstructural changes. Additionally, the experimental results suggest that the ultrasonic nonlinearity parameter of cast stainless steel is determined by the microstructure evolution caused by spinodal decomposition and the phase precipitation process.
| Original language | English |
|---|---|
| Article number | 3476 |
| Journal | Applied Sciences (Switzerland) |
| Volume | 10 |
| Issue number | 10 |
| DOIs | |
| State | Published - 01 05 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 by the authors.
Keywords
- Cast stainless steel
- Microstructural change
- Nondestructive examination
- Nonlinear ultrasonic