4.7 Article

Comparison of electromagnetic inspection methods for creep-degraded high chromium ferritic steels

Journal

NDT & E INTERNATIONAL
Volume 118, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.ndteint.2020.102399

Keywords

Electromagnetic NonDestructive testing; Micromagnetic modelling; High-chromium steel; Creep degradation; Jiles-atherton model

Ask authors/readers for more resources

This study compared three different electromagnetic NDT techniques applied to high-chromium steels to understand the microstructural changes associated with creep evolution. Modeling techniques were proposed for each applied method, with model parameters optimized for each NDT technique and tested material. The accuracy of parameter determination strongly depends on the NDT technique, indicating its correlation with microstructural information.
Nondestructive testing (NDT) techniques are used to evaluate the material degradation of ferromagnetic materials, for example, in sensitive environments, such as thermal power plants, where the materials are subjected to creep damage. There is no consensus on the use of an electromagnetic NDT technique to characterize the evolution of creep damage in high-chromium ferritic steels. In this work, an overview and comparison of three different electromagnetic NDT techniques that were applied to high-chromium steels is provided to understand creep evolution in terms of microstructural changes, such as precipitation, dislocation and grain size. To quantify the empirical measurements, a modelling technique was proposed for each applied method. The model parameters were optimized for each NDT technique and tested material. Depending on the model parameters, the accuracy of the parameter determination depends strongly on the NDT technique, which indicates its correlation with the microstructural information.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available