JPS6453155A - Measuring method for deterioration degree of ferrite-based heat-resisting steel component - Google Patents

Measuring method for deterioration degree of ferrite-based heat-resisting steel component

Info

Publication number
JPS6453155A
JPS6453155A JP63098320A JP9832088A JPS6453155A JP S6453155 A JPS6453155 A JP S6453155A JP 63098320 A JP63098320 A JP 63098320A JP 9832088 A JP9832088 A JP 9832088A JP S6453155 A JPS6453155 A JP S6453155A
Authority
JP
Japan
Prior art keywords
deterioration degree
ferrite
based heat
resisting steel
property value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63098320A
Other languages
Japanese (ja)
Inventor
Shuichi Komatsu
Shinichi Nakamura
Kazumi Shimotori
Yoshio Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP54009122A external-priority patent/JPS5917384B2/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP63098320A priority Critical patent/JPS6453155A/en
Publication of JPS6453155A publication Critical patent/JPS6453155A/en
Pending legal-status Critical Current

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  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

PURPOSE:To easily measure the degree of deterioration of ferrite-based heat- resisting steel with time by using the close correlation between the deterioration degree and an experimental expression showing the relation among the absolute temperature, elapsed time, and property value, e.g. particle side of deposited carbide. CONSTITUTION:The property value P of the carbide deposited in the in-use ferrite-based heat-resisting steel such as the grain side and intergranular distance is expressed by the experimental expression P=T(C+log t) among the absolute temperature T, elapsed time (t) and a constant C depending upon the material. Further, a relational expression has close correlation with the deterioration degree. For the purpose, a forcible acceleration test of a test piece is conducted so that the temperature and time are parameters, and a deterioration degree evaluation reference curve showing the relation with a property value such as gain size sown by said grain size is found previously. This used to easily measure the deterioration degree of the object member.
JP63098320A 1979-01-31 1988-04-22 Measuring method for deterioration degree of ferrite-based heat-resisting steel component Pending JPS6453155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63098320A JPS6453155A (en) 1979-01-31 1988-04-22 Measuring method for deterioration degree of ferrite-based heat-resisting steel component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP54009122A JPS5917384B2 (en) 1979-01-31 1979-01-31 Method for measuring the degree of deterioration of ferritic heat-resistant steel parts
JP63098320A JPS6453155A (en) 1979-01-31 1988-04-22 Measuring method for deterioration degree of ferrite-based heat-resisting steel component

Publications (1)

Publication Number Publication Date
JPS6453155A true JPS6453155A (en) 1989-03-01

Family

ID=26343780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63098320A Pending JPS6453155A (en) 1979-01-31 1988-04-22 Measuring method for deterioration degree of ferrite-based heat-resisting steel component

Country Status (1)

Country Link
JP (1) JPS6453155A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009139137A (en) * 2007-12-04 2009-06-25 Babcock Hitachi Kk Graphitization damage diagnosing method of carbon steel and mo steel for boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009139137A (en) * 2007-12-04 2009-06-25 Babcock Hitachi Kk Graphitization damage diagnosing method of carbon steel and mo steel for boiler

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