Microstructural dependence of Barkhausen noise and magnetic relaxation in the weld HAZ of an RPV steel

Duck Gun Park; Cheol Gi Kim; Jun Hwa Hong

doi:10.1016/S0304-8853(00)00282-1

Microstructural dependence of Barkhausen noise and magnetic relaxation in the weld HAZ of an RPV steel

Duck Gun Park, Cheol Gi Kim, Jun Hwa Hong

Department of Physics and Chemistry

Korea Atomic Energy Research Institute

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

Magnetic Barkhausen noise and permeability spectra have been measured to characterize different microstructure regions such as coarse-grain region, fine-grain region, intercritical structure (composed of tempered martensite and bainite) within the heat-affected zone (HAZ) of SA508-3 steel weldments using simulated HAZ microstructure sample. The intercritical region and coarse-grained region can be distinguished from the BNE and relaxation frequency. The BNE was decreased in the martensite regions and increased in the bainite regions by the post-weld heat treatment (PWHT). The change of relaxation frequency also showed similar trends, but the rate of change was less than that of BNE. The behavior of BNE and permeability spectra on the corresponding microstructure can be explained in terms of carbide morphology and residual stress related with domain wall motion.

Original language	English
Pages (from-to)	765-768
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	215
DOIs	https://doi.org/10.1016/S0304-8853(00)00282-1
State	Published - 2 Jun 2000
Event	14th International Symposium on Soft Magnetic Materials (SMM14) - Balatonfured, Hung Duration: 8 Sep 1999 → 10 Sep 1999

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title = "Microstructural dependence of Barkhausen noise and magnetic relaxation in the weld HAZ of an RPV steel",

abstract = "Magnetic Barkhausen noise and permeability spectra have been measured to characterize different microstructure regions such as coarse-grain region, fine-grain region, intercritical structure (composed of tempered martensite and bainite) within the heat-affected zone (HAZ) of SA508-3 steel weldments using simulated HAZ microstructure sample. The intercritical region and coarse-grained region can be distinguished from the BNE and relaxation frequency. The BNE was decreased in the martensite regions and increased in the bainite regions by the post-weld heat treatment (PWHT). The change of relaxation frequency also showed similar trends, but the rate of change was less than that of BNE. The behavior of BNE and permeability spectra on the corresponding microstructure can be explained in terms of carbide morphology and residual stress related with domain wall motion.",

author = "Park, \{Duck Gun\} and Kim, \{Cheol Gi\} and Hong, \{Jun Hwa\}",

year = "2000",

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doi = "10.1016/S0304-8853(00)00282-1",

language = "English",

volume = "215",

pages = "765--768",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

note = "14th International Symposium on Soft Magnetic Materials (SMM14) ; Conference date: 08-09-1999 Through 10-09-1999",

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TY - JOUR

T1 - Microstructural dependence of Barkhausen noise and magnetic relaxation in the weld HAZ of an RPV steel

AU - Park, Duck Gun

AU - Kim, Cheol Gi

AU - Hong, Jun Hwa

PY - 2000/6/2

Y1 - 2000/6/2

N2 - Magnetic Barkhausen noise and permeability spectra have been measured to characterize different microstructure regions such as coarse-grain region, fine-grain region, intercritical structure (composed of tempered martensite and bainite) within the heat-affected zone (HAZ) of SA508-3 steel weldments using simulated HAZ microstructure sample. The intercritical region and coarse-grained region can be distinguished from the BNE and relaxation frequency. The BNE was decreased in the martensite regions and increased in the bainite regions by the post-weld heat treatment (PWHT). The change of relaxation frequency also showed similar trends, but the rate of change was less than that of BNE. The behavior of BNE and permeability spectra on the corresponding microstructure can be explained in terms of carbide morphology and residual stress related with domain wall motion.

AB - Magnetic Barkhausen noise and permeability spectra have been measured to characterize different microstructure regions such as coarse-grain region, fine-grain region, intercritical structure (composed of tempered martensite and bainite) within the heat-affected zone (HAZ) of SA508-3 steel weldments using simulated HAZ microstructure sample. The intercritical region and coarse-grained region can be distinguished from the BNE and relaxation frequency. The BNE was decreased in the martensite regions and increased in the bainite regions by the post-weld heat treatment (PWHT). The change of relaxation frequency also showed similar trends, but the rate of change was less than that of BNE. The behavior of BNE and permeability spectra on the corresponding microstructure can be explained in terms of carbide morphology and residual stress related with domain wall motion.

UR - https://www.scopus.com/pages/publications/0033706274

U2 - 10.1016/S0304-8853(00)00282-1

DO - 10.1016/S0304-8853(00)00282-1

M3 - Conference article

AN - SCOPUS:0033706274

SN - 0304-8853

VL - 215

SP - 765

EP - 768

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

T2 - 14th International Symposium on Soft Magnetic Materials (SMM14)

Y2 - 8 September 1999 through 10 September 1999

ER -

Microstructural dependence of Barkhausen noise and magnetic relaxation in the weld HAZ of an RPV steel

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