Electromagnetic evaluation of the microstructure of Grade 91 tubes/pipes

Jun Liu; John Wilson; Martin Strangwood; Claire L. Davis; Anthony Peyton; Jonathan Parker

doi:10.1016/j.ijpvp.2015.05.009

Electromagnetic evaluation of the microstructure of Grade 91 tubes/pipes

Jun Liu, John Wilson, Martin Strangwood, Claire L. Davis, Anthony Peyton, Jonathan Parker

Metallurgy and Materials

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

10 Citations (Scopus)

215 Downloads (Pure)

Abstract

This paper assesses the feasibility of transferring a laboratory-based electromagnetic (EM) sensor technique, which has already proved sensitive to significant (e.g. phase balance) or subtle (e.g. number density of fine precipitates) microstructural changes in steel, to non-destructive evaluation of the microstructure of power generation components such as tubes/pipes. It has been found that Grade 91 steels, in different conditions representative of service entry, thermally aged or ex-service, can be distinguished using laboratory-based measurement systems on small machined cylindrical samples as well as by an industry deployment EM sensor system on full-diameter tube samples. The measurements for the tube samples follow the same trend as the machined cylindrical samples. The results indicate an industrial deployable sensor system can be used for sorting service-exposed or mis-heat-treated/mis-manufactured Grade 91 steel tubes/pipes from the correctly heat treated service-entry ones.

Original language	English
Pages (from-to)	65-71
Number of pages	7
Journal	International Journal of Pressure Vessels and Piping
Volume	132-133
Early online date	3 Jun 2015
DOIs	https://doi.org/10.1016/j.ijpvp.2015.05.009
Publication status	Published - 1 Aug 2015

Keywords

Grade 91 steel
EM sensor
Relative permeability
BH loop
Tube

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10.1016/j.ijpvp.2015.05.009

Liu_et_al_Electromagnetic_Evaluation_International_Journal_Pressure_Vessels_Piping_2015
Published under a Creative Commons Attribution license Checked September 2015
Final published version, 2.11 MBLicence: Creative Commons: Attribution (CC BY)

http://linkinghub.elsevier.com/retrieve/pii/S0308016115000691

ASAP - Advanced electromagnetic Sensors for Assessing Property scatter in high value steels- UK and India Partnership in Advanced Manufacturing Research
Davis, C. (Principal Investigator) & Strangwood, M. (Co-Investigator)
Engineering & Physical Science Research Council
1/02/14 → 31/01/17
Project: Research Councils
High temperature In-situ Monitoring of Power Station Steels using Electromagnetic Sensors - POWEREMS
Davis, C. (Principal Investigator) & Strangwood, M. (Co-Investigator)
Engineering & Physical Science Research Council
1/06/10 → 31/05/13
Project: Research Councils

Cite this

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title = "Electromagnetic evaluation of the microstructure of Grade 91 tubes/pipes",

abstract = "This paper assesses the feasibility of transferring a laboratory-based electromagnetic (EM) sensor technique, which has already proved sensitive to significant (e.g. phase balance) or subtle (e.g. number density of fine precipitates) microstructural changes in steel, to non-destructive evaluation of the microstructure of power generation components such as tubes/pipes. It has been found that Grade 91 steels, in different conditions representative of service entry, thermally aged or ex-service, can be distinguished using laboratory-based measurement systems on small machined cylindrical samples as well as by an industry deployment EM sensor system on full-diameter tube samples. The measurements for the tube samples follow the same trend as the machined cylindrical samples. The results indicate an industrial deployable sensor system can be used for sorting service-exposed or mis-heat-treated/mis-manufactured Grade 91 steel tubes/pipes from the correctly heat treated service-entry ones.",

keywords = "Grade 91 steel, EM sensor, Relative permeability, BH loop, Tube",

author = "Jun Liu and John Wilson and Martin Strangwood and Davis, {Claire L.} and Anthony Peyton and Jonathan Parker",

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doi = "10.1016/j.ijpvp.2015.05.009",

language = "English",

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journal = "International Journal of Pressure Vessels and Piping",

issn = "0308-0161",

publisher = "Elsevier",

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TY - JOUR

T1 - Electromagnetic evaluation of the microstructure of Grade 91 tubes/pipes

AU - Liu, Jun

AU - Wilson, John

AU - Strangwood, Martin

AU - Davis, Claire L.

AU - Peyton, Anthony

AU - Parker, Jonathan

PY - 2015/8/1

Y1 - 2015/8/1

N2 - This paper assesses the feasibility of transferring a laboratory-based electromagnetic (EM) sensor technique, which has already proved sensitive to significant (e.g. phase balance) or subtle (e.g. number density of fine precipitates) microstructural changes in steel, to non-destructive evaluation of the microstructure of power generation components such as tubes/pipes. It has been found that Grade 91 steels, in different conditions representative of service entry, thermally aged or ex-service, can be distinguished using laboratory-based measurement systems on small machined cylindrical samples as well as by an industry deployment EM sensor system on full-diameter tube samples. The measurements for the tube samples follow the same trend as the machined cylindrical samples. The results indicate an industrial deployable sensor system can be used for sorting service-exposed or mis-heat-treated/mis-manufactured Grade 91 steel tubes/pipes from the correctly heat treated service-entry ones.

AB - This paper assesses the feasibility of transferring a laboratory-based electromagnetic (EM) sensor technique, which has already proved sensitive to significant (e.g. phase balance) or subtle (e.g. number density of fine precipitates) microstructural changes in steel, to non-destructive evaluation of the microstructure of power generation components such as tubes/pipes. It has been found that Grade 91 steels, in different conditions representative of service entry, thermally aged or ex-service, can be distinguished using laboratory-based measurement systems on small machined cylindrical samples as well as by an industry deployment EM sensor system on full-diameter tube samples. The measurements for the tube samples follow the same trend as the machined cylindrical samples. The results indicate an industrial deployable sensor system can be used for sorting service-exposed or mis-heat-treated/mis-manufactured Grade 91 steel tubes/pipes from the correctly heat treated service-entry ones.

KW - Grade 91 steel

KW - EM sensor

KW - Relative permeability

KW - BH loop

KW - Tube

U2 - 10.1016/j.ijpvp.2015.05.009

DO - 10.1016/j.ijpvp.2015.05.009

M3 - Article

SN - 0308-0161

VL - 132-133

SP - 65

EP - 71

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

ER -

Electromagnetic evaluation of the microstructure of Grade 91 tubes/pipes

Abstract

Keywords

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Projects

ASAP - Advanced electromagnetic Sensors for Assessing Property scatter in high value steels- UK and India Partnership in Advanced Manufacturing Research

High temperature In-situ Monitoring of Power Station Steels using Electromagnetic Sensors - POWEREMS

Cite this