The dependence of magnetic properties on fatigue in A533B nuclear pressure vessel steels

Author

Bi, Y. ; Govindaraju, M.R. ; Jiles, D.C.

Author_Institution

Center for Nondestructive Evaluation, Iowa State Univ., Ames, IA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3928

Lastpage

3930

Abstract

Cyclic loading causes cumulative microstructural changes in materials. The magnetic properties of A533B steel are determined by both initial microstructures and microstructural changes induced by fatigue damage. From the results of a series of strain-controlled fatigue tests, the magnetic properties were found to change systematically with fatigue damage throughout the fatigue life. A linear relationship between magnetic remanence and mechanical modulus was observed. The fatigue lifetimes were also dependent on the initial microstructure, and a relationship between these lifetimes and pre-fatigue magnetic properties such as coercivity was observed. Therefore this study has demonstrated that magnetic measurements can be exploited to evaluate the progress of fatigue damage in steel

Keywords

coercive force; crystal microstructure; elastic moduli; fatigue; nondestructive testing; remanence; steel; A533B nuclear pressure vessel steels; coercivity; cumulative microstructural changes; cyclic loading; fatigue; magnetic remanence; mechanical modulus; strain-controlled fatigue tests; Coercive force; Fatigue; Life testing; Magnetic materials; Magnetic properties; Magnetic variables measurement; Microstructure; Remanence; Steel; System testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.619618

Filename

619618