JPS6453156A - Measuring method for deterioration degree of 12% cr-base heat-resisting steel for steam turbine member - Google Patents
Measuring method for deterioration degree of 12% cr-base heat-resisting steel for steam turbine memberInfo
- Publication number
- JPS6453156A JPS6453156A JP63098321A JP9832188A JPS6453156A JP S6453156 A JPS6453156 A JP S6453156A JP 63098321 A JP63098321 A JP 63098321A JP 9832188 A JP9832188 A JP 9832188A JP S6453156 A JPS6453156 A JP S6453156A
- Authority
- JP
- Japan
- Prior art keywords
- deterioration
- degree
- resisting steel
- constant
- elapsed time
- 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
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
PURPOSE:To easily measure the degree of the deterioration of 12% Cr-based heat resisting steel with time by using the close correlation between an experimental expression showing the relation among a Laves phase deposition amount, absolute temperature, and elapsed time and the degree of deterioration. CONSTITUTION:A constant C depending upon the Laves phase deposition amount of 12% Cr-based heat-resisting steel in use is expressed by the experimental expression C=T(C1+log t), where T is the absolute temperature, (t) is the elapsed time, and C1 is the constant depending upon the material. Further, a relational expression has close correlation with the degree of deterioration. For the purpose, a characteristic graph showing the relation between the amount of Laves phase deposition by X-ray diffraction and elapsed time as to a test piece under the condition of constant temperature and constant stress is drawn and used as a deterioration evaluation reference curve. Consequently, the degree of deterioration, i.e. which position up to rupture is indicated is easily decided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63098321A JPS6453156A (en) | 1979-01-31 | 1988-04-22 | Measuring method for deterioration degree of 12% cr-base heat-resisting steel for steam turbine member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54009121A JPS5917383B2 (en) | 1979-01-31 | 1979-01-31 | Method for measuring the degree of deterioration of 12% Cr heat-resistant steel |
JP63098321A JPS6453156A (en) | 1979-01-31 | 1988-04-22 | Measuring method for deterioration degree of 12% cr-base heat-resisting steel for steam turbine member |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6453156A true JPS6453156A (en) | 1989-03-01 |
Family
ID=26343779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63098321A Pending JPS6453156A (en) | 1979-01-31 | 1988-04-22 | Measuring method for deterioration degree of 12% cr-base heat-resisting steel for steam turbine member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6453156A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1157916A2 (en) | 2000-04-26 | 2001-11-28 | Neo-Ex Lab. Inc. | Devices and methods for reinforcing hollow structural members |
CN103207194A (en) * | 2013-01-29 | 2013-07-17 | 武汉大学 | Method for determining content of element W in matrix after long-term operation of T/P92 steel |
-
1988
- 1988-04-22 JP JP63098321A patent/JPS6453156A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1157916A2 (en) | 2000-04-26 | 2001-11-28 | Neo-Ex Lab. Inc. | Devices and methods for reinforcing hollow structural members |
CN103207194A (en) * | 2013-01-29 | 2013-07-17 | 武汉大学 | Method for determining content of element W in matrix after long-term operation of T/P92 steel |
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