Published 2001 | Version v1
Miscellaneous Metadata-only

Evaluation of 1Cr-1Mo-0.25V steel degradation using magnetic barkhausen noise

Creators

  • 1. Inha Univ., Incheon (Korea, Republic of)
  • 2. Korea Research Institute of Standards and Science, Taejon (Korea, Republic of)

Description

It is inevitable to evaluate the life of turbine rotor because the operating periods of power plants need to be extended. The magnetic methods utilizing magnetic barkhausen noise curve were applied to detect the degradation caused by thermal aging. The magnetic property of material depends on the domain dynamics and it is affected by the microstructure of material. Therefore the magnetic property is very sensitive to the microstructure change of the material. It is, thus, very useful to detect the state of degradation of varying materials. The test specimen made of 1Cr-1Mo-0.25V steel was used widely for turbine rotor material, and seven kinds of specimens with different degradation levels were prepared by the isothermal heat treatment at 630 .deg. C. With the increase of degradation, BHN was decreased. The result was compared with coercive force and vickers hardness

Part of:
Proceedings of the KSME 2001 spring annual meeting A

Additional details

Publishing Information

Publisher
KSME
Imprint Place
Seoul (Korea, Republic of)
Imprint Title
Proceedings of the KSME 2001 spring annual meeting A
Imprint Pagination
980 p.
Journal Page Range
p. 250-255

Conference

Title
KSME 2001 spring annual meeting A
Dates
27-29 Jun 2001
Place
Cheju (Korea, Republic of)

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
36017179
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
COERCIVE FORCE; FERROMAGNETISM; HEAT TREATMENTS; ISOTHERMAL PROCESSES; POWER PLANTS; ROTORS; STEELS; THERMAL DEGRADATION; TURBINES; VICKERS HARDNESS
Descriptors DEC
ALLOYS; CARBON ADDITIONS; EQUIPMENT; IRON ALLOYS; IRON BASE ALLOYS; MACHINERY; MAGNETISM; TRANSITION ELEMENT ALLOYS; TURBOMACHINERY

Optional Information

Notes
9 refs, 8 figs, 3 tabs