JPS5655854A - Measuring method for life of heat-resisting steel - Google Patents
Measuring method for life of heat-resisting steelInfo
- Publication number
- JPS5655854A JPS5655854A JP13131079A JP13131079A JPS5655854A JP S5655854 A JPS5655854 A JP S5655854A JP 13131079 A JP13131079 A JP 13131079A JP 13131079 A JP13131079 A JP 13131079A JP S5655854 A JPS5655854 A JP S5655854A
- Authority
- JP
- Japan
- Prior art keywords
- carbonate
- particle
- heat
- curve
- resisting steel
- 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
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
PURPOSE: To measure the degree of deterioration of the heat-resisting steel rapidly and with high precision by a method wherein a particle-diameter frequency curve of the M23C6 carbonate educed in the heat-resisting steel is found and the curve is compared with the particle-diameter frequency curve of the M23C6 carbonate separated in an employed heat-resisting steel member.
CONSTITUTION: In the measurement of the life of the heat-resisting steel such as the blade material for a steam turbine, the M23C6 carbonate in a creep interruption material, for instance, which shows the values of 1/5, 2/5, 3/5 and 4/5 in relation to a breakage time tR in the course of a creep test for the 12% CrMoVW steel is observed by means of an electronic microscope and the particle- diameter frequency curve is measured. The graphs of particle diameter and number of pieces of the M23C6 carbonate form the curve 1 prior to the test and the curves 2W6, as shown in the figure (X), for the creep interruption times 1/5, 2/5, 3/5, and 4/5 and for the breakage time, respectively. The position of the peak of the particle diameter and the number pieces transfers to that of larger diameter of the particle. In addition, when the total sum of the area of the carbonate within a straigth line 8 which is the limit of the size of the carbonate allowing the observation thereof and the particle diameter of 0.2 or less is found for the curves 1W6, the figure (Y) is obtained. Thus, when the curve of deterioration with the elapse of year is once prepared, the estimation of the degree of deterioration with the elapse of year becomes possible.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13131079A JPS5655854A (en) | 1979-10-13 | 1979-10-13 | Measuring method for life of heat-resisting steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13131079A JPS5655854A (en) | 1979-10-13 | 1979-10-13 | Measuring method for life of heat-resisting steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5655854A true JPS5655854A (en) | 1981-05-16 |
Family
ID=15054960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13131079A Pending JPS5655854A (en) | 1979-10-13 | 1979-10-13 | Measuring method for life of heat-resisting steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5655854A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245155A (en) * | 1986-04-17 | 1987-10-26 | Mitsubishi Heavy Ind Ltd | Residual life evaluation for ferrite heat-resisting steel |
| EP0264813A2 (en) * | 1986-10-16 | 1988-04-27 | Babcock-Hitachi Kabushiki Kaisha | Method of predicting remaining lifetime of metal material |
| CN103308372A (en) * | 2013-06-17 | 2013-09-18 | 武汉大学 | T91-steel ageing ranking method based on transmission electron microscope |
| CN109883904A (en) * | 2019-03-06 | 2019-06-14 | 清华大学 | A method of it is distributed using non-metallic inclusion in electrolysis method characterization large-scale steel ingot |
-
1979
- 1979-10-13 JP JP13131079A patent/JPS5655854A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245155A (en) * | 1986-04-17 | 1987-10-26 | Mitsubishi Heavy Ind Ltd | Residual life evaluation for ferrite heat-resisting steel |
| EP0264813A2 (en) * | 1986-10-16 | 1988-04-27 | Babcock-Hitachi Kabushiki Kaisha | Method of predicting remaining lifetime of metal material |
| CN103308372A (en) * | 2013-06-17 | 2013-09-18 | 武汉大学 | T91-steel ageing ranking method based on transmission electron microscope |
| CN109883904A (en) * | 2019-03-06 | 2019-06-14 | 清华大学 | A method of it is distributed using non-metallic inclusion in electrolysis method characterization large-scale steel ingot |
| CN109883904B (en) * | 2019-03-06 | 2021-01-12 | 清华大学 | Method for representing distribution of nonmetallic inclusions in large steel ingot by using electrolytic method |
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