Microstructural evaluation of isothermally aged 12Cr steel by magnetic property measurement

C. S. Kim; J. H. Kang; J. W. Byeon; S. I. Kwun

doi:10.4028/0-87849-413-8.1253

Microstructural evaluation of isothermally aged 12Cr steel by magnetic property measurement

C. S. Kim, J. H. Kang, J. W. Byeon, S. I. Kwun

Dept. of Mechanical Convergence Engineering

Korea University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The magnetic coercivity of ferritic 12Cr steel was experimentally studied in order to characterize its microstructures and mechanical properties during isothermal aging. As the aging time increased, the VhsCe carbide coarsened and additional precipitation of Fe₂W phase was induced. The width of martensite lath increased to about 0.4μm after 4000 hrs of aging. The coercivity decreased as the number of precipitate decreased and the width of martensite lath increased. The hardness was proportional to the magnetic coercivity. These empirical linear relations suggested that the change in the microstructures and strength of ferritic 12Cr steel during thermal aging could be evaluated by monitoring the magnetic coercivity.

Original language	English
Pages (from-to)	1253-1256
Number of pages	4
Journal	Key Engineering Materials
Volume	324-325 II
DOIs	https://doi.org/10.4028/0-87849-413-8.1253
State	Published - 2006

Keywords

Coercivity
Ferritic 12Cr steel
Isothermal aging
Martensite lath

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10.4028/0-87849-413-8.1253

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title = "Microstructural evaluation of isothermally aged 12Cr steel by magnetic property measurement",

abstract = "The magnetic coercivity of ferritic 12Cr steel was experimentally studied in order to characterize its microstructures and mechanical properties during isothermal aging. As the aging time increased, the VhsCe carbide coarsened and additional precipitation of Fe2W phase was induced. The width of martensite lath increased to about 0.4μm after 4000 hrs of aging. The coercivity decreased as the number of precipitate decreased and the width of martensite lath increased. The hardness was proportional to the magnetic coercivity. These empirical linear relations suggested that the change in the microstructures and strength of ferritic 12Cr steel during thermal aging could be evaluated by monitoring the magnetic coercivity.",

keywords = "Coercivity, Ferritic 12Cr steel, Isothermal aging, Martensite lath",

author = "Kim, \{C. S.\} and Kang, \{J. H.\} and Byeon, \{J. W.\} and Kwun, \{S. I.\}",

year = "2006",

doi = "10.4028/0-87849-413-8.1253",

language = "English",

volume = "324-325 II",

pages = "1253--1256",

journal = "Key Engineering Materials",

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TY - JOUR

T1 - Microstructural evaluation of isothermally aged 12Cr steel by magnetic property measurement

AU - Kim, C. S.

AU - Kang, J. H.

AU - Byeon, J. W.

AU - Kwun, S. I.

PY - 2006

Y1 - 2006

N2 - The magnetic coercivity of ferritic 12Cr steel was experimentally studied in order to characterize its microstructures and mechanical properties during isothermal aging. As the aging time increased, the VhsCe carbide coarsened and additional precipitation of Fe2W phase was induced. The width of martensite lath increased to about 0.4μm after 4000 hrs of aging. The coercivity decreased as the number of precipitate decreased and the width of martensite lath increased. The hardness was proportional to the magnetic coercivity. These empirical linear relations suggested that the change in the microstructures and strength of ferritic 12Cr steel during thermal aging could be evaluated by monitoring the magnetic coercivity.

AB - The magnetic coercivity of ferritic 12Cr steel was experimentally studied in order to characterize its microstructures and mechanical properties during isothermal aging. As the aging time increased, the VhsCe carbide coarsened and additional precipitation of Fe2W phase was induced. The width of martensite lath increased to about 0.4μm after 4000 hrs of aging. The coercivity decreased as the number of precipitate decreased and the width of martensite lath increased. The hardness was proportional to the magnetic coercivity. These empirical linear relations suggested that the change in the microstructures and strength of ferritic 12Cr steel during thermal aging could be evaluated by monitoring the magnetic coercivity.

KW - Coercivity

KW - Ferritic 12Cr steel

KW - Isothermal aging

KW - Martensite lath

UR - https://www.scopus.com/pages/publications/33750910212

U2 - 10.4028/0-87849-413-8.1253

DO - 10.4028/0-87849-413-8.1253

M3 - Article

AN - SCOPUS:33750910212

SN - 1013-9826

VL - 324-325 II

SP - 1253

EP - 1256

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Microstructural evaluation of isothermally aged 12Cr steel by magnetic property measurement

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Keywords

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