CN103063736B - Method for online detecting thermal aging condition of duplex stainless steel and system thereof - Google Patents
Method for online detecting thermal aging condition of duplex stainless steel and system thereof Download PDFInfo
- Publication number
- CN103063736B CN103063736B CN201310002516.5A CN201310002516A CN103063736B CN 103063736 B CN103063736 B CN 103063736B CN 201310002516 A CN201310002516 A CN 201310002516A CN 103063736 B CN103063736 B CN 103063736B
- Authority
- CN
- China
- Prior art keywords
- heat ageing
- mechanical property
- stainless steel
- safety coefficient
- room temperature
- 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.)
- Active
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The invention relates to a method for online detecting the thermal aging condition of duplex stainless steel and a system thereof. The system comprises an input and output module and a computation module, wherein the computation module comprises three algorithm units of a relationship of the magnetic permeability and the thermal aging dynamics, a relationship of the thermal aging dynamics and the mechanical property and a relationship of the mechanical property and the thermal aging security coefficient. The method comprises the following steps: establishing the algorithm units of a duplex stainless steel material; reading the relative permeability parameters of a material to be detected, and obtaining the thermal aging security coefficient of the duplex stainless steel according to the algorithm units; and judging the security of the material according to the obtain thermal aging security coefficient. The system and the method can realize online detection to duplex stainless steel parts and increase the service security of the parts. Meanwhile, the system and the method are convenient to operate, save the time and the labor, and are beneficial to engineers and researchers to develop the service life evaluation of the duplex stainless steel parts on this basis.
Description
Technical field
The invention belongs to field of metal material detection, be specifically related to a kind of method and system of on-line checkingi dual-phase stainless steel hot aging performance.
Background technology
Two phase stainless steel has austenite and ferritic duplex structure, has the welding performance of high intensity, good corrosion-resistant and cracking performance and excellence, is widely used in the industrial circle such as nuclear energy, petroleum and chemical industry.But two-phase stainless steel part is Long-Time Service in 300 ~ 500 DEG C of temperature ranges, heat ageing can occur thus cause the mechanical property of material that deterioration occurs, show as: the impact toughness decreased of material, decay resistance is deteriorated and fatigue life shortens.This not only can make shorten the service life of parts, also can increase the insecurity of parts or equipment.Primary Ioops main pipeline in pressurized-water reactor nuclear power plant, main pump pump case, valve etc. all adopt two phase stainless steel, and the potential safety hazard that heat ageing is brought to two phase stainless steel parts has had influence on the stable operation of whole nuclear power station.Therefore, Real-Time Monitoring must be carried out to the heat ageing situation of two phase stainless steel.
Detection in the past for the heat ageing of two-phase stainless steel part is carried out often through in laboratory, the material identical with parts be placed in the experimental situation similar to Service Environment or carry out acceleration thermal ageing test under worse environment, indirectly obtaining the heat ageing situation of material by the mechanical property of material in determination experiment room.This method wastes time and energy on the one hand, needs a large amount of manpower and materials of cost and experimental period; There is certain deviation in the True Data under the data obtained in laboratory environment on the other hand and Service Environment.Therefore, the method and system developing a kind of on-line checkingi dual-phase stainless steel hot aging performance are very necessary.
Summary of the invention
The object of the present invention is to provide a kind of method and system of dual-phase stainless steel hot aging performance, realize the on-line checkingi to military service two-phase stainless steel part, thus improve its service safety.
A method for on-line checkingi dual-phase stainless steel hot aging performance, comprises the steps:
1) the following algorithm unit of two-phase stainless Steel material is set up: the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient;
2) read the relative permeability parameter of material to be detected, according to step 1), each algorithm unit obtains the heat ageing safety coefficient of two phase stainless steel;
3) material safety is judged according to the heat ageing safety coefficient obtained.
Described magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, computing formula is μ
r=-0.65ln (0.00367lnt
p), wherein μ
rfor the relative permeability under material room temperature; t
pbe the thermal aging time at 400 DEG C, the measuring tempeature of magnetic conductivity is room temperature.
The ralation method unit computing formula of described heat ageing dynamics and mechanical property is t
p=55448.09exp (-C
v/ 38.56)-57.53, wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material; Select impact property as mechanical performance index, the measuring tempeature of ballistic work is room temperature.
The relational calculus unit computing formula of described mechanical property and heat ageing safety coefficient is P=(C
v/ C
v0) ^2-0.2, wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for lower limit or the saturated ballistic work of materials design criteria, select impact property as mechanical performance index, the measuring tempeature of ballistic work is room temperature, and the design standard of selection material or saturated ballistic work are as the lower limit of mechanical performance index; When described P≤1, material is judged as dangerous; P > 1, material is judged as safety.
For realizing said method, the invention provides a kind of system of on-line checkingi dual-phase stainless steel hot aging performance, comprise the input module, computing module and the output module that connect successively, the function of described input module is the parameter of the relative permeability reading material from user, and is supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and its function is the relation calculating the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient; Described output module is the output to material safety.
Magnetic conductivity in described computing module and the dynamic (dynamical) relation of heat ageing adopt following computing formula:
μ
r=-0.65ln (0.00367lnt
p) formula 1
Wherein, μ
rfor the relative permeability under material room temperature; t
pit is the thermal aging time at 400 DEG C.
Heat ageing dynamics in described computing module and the relation of mechanical property adopt following computing formula:
T
p=55448.09exp (-C
v/ 38.56)-57.53 formulas 2
Wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material.
The relation of the mechanical property in described computing module and heat ageing safety coefficient adopts following computing formula:
P=(C
v/ C
v0) ^2-0.2 formula 3
Wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for lower limit or the saturated ballistic work of materials design criteria.When recording P≤1, material is judged as dangerous; P > 1, material is judged as safety.
Tool of the present invention has the following advantages:
1. can carry out on-line checkingi to the heat ageing situation of two phase stainless steel.The present invention can according to the relative permeability of the actual material recorded, by the great many of experiments number of chambers according to three relations that basis obtains: the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property and the relation of mechanical property and heat ageing safety coefficient, the final heat ageing situation obtaining two phase stainless steel.The computational methods of these heat ageing dynamics and heat ageing safety coefficient can provide foundation for the life appraisal of two phase stainless steel.
2. easy to operate, to save time, laborsaving.No matter adopt the inventive method, be the staff of factory, or the researcher of scientific research institutions, can carry out the life assessment work of two-phase stainless steel part.
Accompanying drawing explanation
Fig. 1 is FB(flow block) of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail as follows:
Fig. 1 is FB(flow block) of the present invention.The present invention is a kind of method of on-line checkingi dual-phase stainless steel hot aging performance, comprises the steps:
1) the following algorithm unit of two-phase stainless Steel material is set up: the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient; Described magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, computing formula is μ
r=-0.65ln (0.00367lnt
p), wherein μ
rfor the relative permeability under material room temperature; t
pbe the thermal aging time at 400 DEG C, the measuring tempeature of magnetic conductivity is room temperature.The ralation method unit computing formula of described heat ageing dynamics and mechanical property is: t
p=55448.09exp (-C
v/ 38.56)-57.53, wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material; Select impact property as mechanical performance index, the measuring tempeature of ballistic work is room temperature.The relational calculus unit computing formula of described mechanical property and heat ageing safety coefficient is P=(C
v/ C
v0) ^2-0.2, wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for lower limit or the saturated ballistic work of materials design criteria, select impact property as mechanical performance index, the measuring tempeature of ballistic work is room temperature, and the design standard of selection material or saturated ballistic work are as the lower limit of mechanical performance index;
2) read the relative permeability parameter of material to be detected, according to step 1), each algorithm unit obtains the heat ageing safety coefficient of two phase stainless steel;
3) material safety is judged according to the heat ageing safety coefficient obtained.When described P≤1, material is judged as dangerous; P > 1, material is judged as safety.
For realizing said method, the invention provides a kind of system of on-line checkingi dual-phase stainless steel hot aging performance, comprise the input module, computing module and the output module that connect successively, the function of described input module is the parameter of the relative permeability reading material from user, and is supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and its function is the relation calculating the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient; Described output module is the output to material safety.
Magnetic conductivity in described computing module and the dynamic (dynamical) relation of heat ageing adopt following computing formula:
μ
r=-0.65ln (0.00367lnt
p) formula 1
Wherein, μ
rfor the relative permeability under material room temperature; t
pit is the thermal aging time at 400 DEG C.
Heat ageing dynamics in described computing module and the relation of mechanical property adopt following computing formula:
T
p=55448.09exp (-C
v/ 38.56)-57.53 formulas 2
Wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material.
The relation of the mechanical property in described computing module and heat ageing safety coefficient adopts following computing formula:
P=(C
v/ C
v0) ^2-0.2 formula 3
Wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for lower limit or the saturated ballistic work of materials design criteria.When recording P≤1, material is judged as dangerous; P > 1, material is judged as safety.
Embodiment 1:
The present embodiment carries out heat ageing condition detection to certain in-service duplex phase stainless tube.Step is as follows:
1) the following algorithm unit of two-phase stainless Steel material is set up: namely utilize system of the present invention:
2) read the relative permeability parameter of material to be detected by input module, read the parameter of the relative permeability of material from user, and be supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and computing module calculates the relation of the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient:
The first step: the relative permeability measuring this two-phase stainless steel part is 2.21 μ r, adopt formula 1 calculate this heat ageing state corresponding at 400 DEG C heat ageing 8897.6 hours.
Second step: the result of calculation of the input first step, adopts formula 2 to calculate the corresponding 91.1J of impact property value of heat ageing material after 8897.6 hours at 400 DEG C.
3rd step: the result of calculation of input second step, selects the lower limit 80J of ballistic work in this steel part design standard as C
v0value, adopt formula 3 to calculate heat ageing safety coefficient P=1.1 when ballistic work is 91.1J,
3) judge material safety according to the heat ageing safety coefficient P=1.1 obtained, P > 1, material is judged as safety.
Embodiment 2:
The present embodiment two phase stainless steel pump case in-service to certain carries out heat ageing condition detection.Step is as follows:
1) the following algorithm unit of two-phase stainless Steel material is set up: namely utilize system of the present invention:
2) read the relative permeability parameter of material to be detected by input module, read the parameter of the relative permeability of material from user, and be supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and computing module calculates the relation of the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient:
The first step: the relative permeability measuring this two-phase stainless steel part is 2.45 μ r, adopt formula 1 calculate this heat ageing state corresponding at 400 DEG C heat ageing 537.0 hours.
Second step: the result of calculation of the input first step, adopts formula 2 to calculate the corresponding 174.9J of impact property value of heat ageing material after 537.0 hours at 400 DEG C.
3rd step: the result of calculation of input second step, selects the lower limit 60J of ballistic work in this steel part design standard as C
v0value, adopt formula 3 to calculate heat ageing safety coefficient P=8.3 when ballistic work is 174.9J.
3) judge material safety according to the heat ageing safety coefficient P=8.3 obtained, P > 1, material is judged as safety.Embodiment 3:
The present embodiment two phase stainless steel valve in-service to certain carries out heat ageing condition detection.Step is as follows:
1) the following algorithm unit of two-phase stainless Steel material is set up: namely utilize system of the present invention:
2) read the relative permeability parameter of material to be detected by input module, read the parameter of the relative permeability of material from user, and be supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and computing module calculates the relation of the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient:
The first step: the relative permeability measuring this two-phase stainless steel part is 2.161 μ r, adopt formula 1 calculate this heat ageing state corresponding at 400 DEG C heat ageing 18409.9 hours.
Second step: the result of calculation of the input first step, adopts formula 2 to calculate the corresponding 42.4J of impact property value of heat ageing material after 18409.9 hours at 400 DEG C.
3rd step: the result of calculation of input second step, selects the saturated ballistic work 60J of this steel part as C
v0value, adopt formula 3 to calculate heat ageing safety coefficient P=0.5 when ballistic work is 42.4J.
3) judge material safety, P≤1 according to the heat ageing safety coefficient P=0.5 obtained, material is judged to be dangerous.
Claims (8)
1. a method for on-line checkingi dual-phase stainless steel hot aging performance, is characterized in that, comprises the steps:
1) the following algorithm unit of two-phase stainless Steel material is set up: the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient;
2) the relative permeability parameter of material to be detected is read, according to step 1) described each algorithm unit obtains the heat ageing safety coefficient of two phase stainless steel;
3) material safety is judged according to the heat ageing safety coefficient obtained.
2. the method for claim 1, is characterized in that: described magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, computing formula is μ
r=-0.65ln (0.00367lnt
p), wherein μ
rfor the relative permeability under material room temperature; t
pbe the thermal aging time at 400 DEG C, the measuring tempeature of magnetic conductivity is room temperature.
3. the method for claim 1, is characterized in that: the ralation method unit computing formula of described heat ageing dynamics and mechanical property is t
p=55448.09exp (-C
v/ 38.56)-57.53, wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material; Select impact property as mechanical performance index, the measuring tempeature of ballistic work is room temperature.
4. the method for claim 1, is characterized in that: the relational calculus unit computing formula of described mechanical property and heat ageing safety coefficient is P=(C
v/ C
v0) ^2-0.2, wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for the lower limit of ballistic work specified in materials design criteria, the measuring tempeature of ballistic work is room temperature, and the design standard of selection material or saturated ballistic work are as the lower limit of impact property index; Material safety is judged by the heat ageing safety coefficient of material.
5. the system of an on-line checkingi dual-phase stainless steel hot aging performance, it is characterized in that, comprise the input module, computing module and the output module that connect successively, the function of described input module is the parameter of the relative permeability reading material from user, and is supplied to computing module; Described computing module comprises the ralation method unit of the ralation method unit of magnetic conductivity and the dynamic (dynamical) ralation method unit of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient, and its function is the relation calculating the relation of magnetic conductivity and the dynamic (dynamical) relation of heat ageing, heat ageing dynamics and mechanical property, mechanical property and heat ageing safety coefficient; Described output module is the output to material safety.
6. system as claimed in claim 5, is characterized in that: the magnetic conductivity in computing module and the dynamic (dynamical) relation of heat ageing adopt following computing formula:
μ
r=-0.65ln (0.00367lnt
p) formula 1
Wherein, μ
rfor the relative permeability under material room temperature; t
pit is the thermal aging time at 400 DEG C.
7. system as claimed in claim 5, is characterized in that: the heat ageing dynamics in computing module and the relation of mechanical property adopt following computing formula:
T
p=55448.09exp (-C
v/ 38.56)-57.53 formulas 2
Wherein, t
pbe the thermal aging time at 400 DEG C, C
vfor the room temperature Charpy-V impact power of material.
8. system as claimed in claim 5, is characterized in that: the relation of the mechanical property in computing module and heat ageing safety coefficient adopts following computing formula:
P=(C
v/ C
v0) ^2-0.2 formula 3
Wherein, P is the heat ageing safety coefficient of material, C
vfor the room temperature Charpy-V impact power of material, C
v0for the lower limit of ballistic work specified in materials design criteria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310002516.5A CN103063736B (en) | 2013-01-05 | 2013-01-05 | Method for online detecting thermal aging condition of duplex stainless steel and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310002516.5A CN103063736B (en) | 2013-01-05 | 2013-01-05 | Method for online detecting thermal aging condition of duplex stainless steel and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103063736A CN103063736A (en) | 2013-04-24 |
| CN103063736B true CN103063736B (en) | 2015-04-29 |
Family
ID=48106448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310002516.5A Active CN103063736B (en) | 2013-01-05 | 2013-01-05 | Method for online detecting thermal aging condition of duplex stainless steel and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103063736B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181096A (en) * | 2014-09-09 | 2014-12-03 | 北京科技大学 | Method for evaluating thermal ageing state of duplex stainless steel by use of thermoelectric potential |
| CN110108631B (en) * | 2019-05-20 | 2021-11-19 | 上海应用技术大学 | Prediction method for service life of stainless steel pipe in coal conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353755A (en) * | 1980-10-29 | 1982-10-12 | General Electric Company | Method of making high strength duplex stainless steels |
| CN102002646A (en) * | 2010-10-12 | 2011-04-06 | 西安建筑科技大学 | Economic biphase stainless steel with high mechanical property and superior corrosion resistance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3332971B2 (en) * | 1993-01-25 | 2002-10-07 | バブコック日立株式会社 | Diagnosis method for deterioration of ferritic heat-resistant steel |
| JP3728286B2 (en) * | 2002-10-23 | 2005-12-21 | 財団法人発電設備技術検査協会 | Nondestructive high temperature creep damage evaluation method |
-
2013
- 2013-01-05 CN CN201310002516.5A patent/CN103063736B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353755A (en) * | 1980-10-29 | 1982-10-12 | General Electric Company | Method of making high strength duplex stainless steels |
| CN102002646A (en) * | 2010-10-12 | 2011-04-06 | 西安建筑科技大学 | Economic biphase stainless steel with high mechanical property and superior corrosion resistance |
Non-Patent Citations (3)
| Title |
|---|
| Mechanistic Modeling of Dynamic Strain Aging in Austenitic Stainless Steels;L. H. de Almeida et al.;《Materials Characterization》;19981031;第41卷(第4期);第137-150页 * |
| 核电一回路铸造双相不锈钢热老化机理研究;加文哲;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20120715;第9-83页 * |
| 核电站一回路主管道铸造奥氏体不锈钢热老化研究现状与展望;王永强 等;《材料导报》;20120229;第26卷(第2期);第101-105页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103063736A (en) | 2013-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103063528B (en) | Method for fast evaluating high temperate member residual service life on spot | |
| CN106128528B (en) | A kind of method and apparatus for monitoring nuclear power plant reactor pressure vessel irradiation damage | |
| CN103455682A (en) | Method for predicting residual life of corroded casing of high-temperature and high-pressure well | |
| CN103854057B (en) | A kind of comprehensive safety evaluation system being applied to inservice pressure vessel | |
| CN104899425A (en) | Variable selection and forecast method of silicon content in molten iron of blast furnace | |
| CN102937553B (en) | Creep endurance strength prediction method for high-temperature material | |
| Barabadi | Reliability analysis of offshore production facilities under arctic conditions using reliability data from other areas | |
| Li et al. | A procedure for fast evaluation of high-cycle fatigue under multiaxial random loading | |
| CN103063736B (en) | Method for online detecting thermal aging condition of duplex stainless steel and system thereof | |
| CN106653099B (en) | Fatigue life analysis and judgment method for fusion reactor divertor | |
| Okenyi et al. | A review of challenges and framework development for corrosion fatigue life assessment of monopile-supported horizontal-axis offshore wind turbines | |
| Mishra et al. | Use of scaled sensitivity coefficient relations for intrinsic verification of numerical codes and parameter estimation for heat conduction | |
| Bui et al. | Dynamic operation of post-combustion CO2 capture in Australian coal-fired power plants | |
| CN103278525A (en) | Safety assessment method for pressure-bearing equipment after fire disaster | |
| Xu et al. | Attributable variables with interactions that contribute to carbon dioxide in the atmosphere | |
| Zhao et al. | Application of Manson–Haferd and Larson–Miller Methods in Creep Rupture Property Evaluation of Heat-Resistant Steels | |
| CN104181096A (en) | Method for evaluating thermal ageing state of duplex stainless steel by use of thermoelectric potential | |
| Kurushina et al. | Technology audit: assessment of innovative portfolio. | |
| Schopf et al. | Fatigue Behavior and Lifetime Assessment of the Austenitic Stainless Steel AISI 347 and its Associated Filler Metal ER 347 Under Low-, High-and Very High Cycle Fatigue Loadings | |
| Cedro III et al. | Statistical Comparison of Creep-Rupture Lifetime Predictions of Single and Two-Step Aged Wrought Haynes 282 Alloy | |
| CN103602802A (en) | Method for calculating position of highest temperature point of postweld heat treatment of 9-12% Cr martensitic heat-resistant steel vertical arrangement pipeline | |
| Yang et al. | On the Interrupted Creep Test Under Low Stress Levels for the Power Law Parameter Extraction | |
| Yu et al. | Research on the Conversion Relationship for Three-Point Bending Specimen With Fixed Constraints in the Large Deformation Stage | |
| Yang et al. | A review of coupled multielectrode array sensors for corrosion monitoring and a study on the behaviors of the anodic and cathodic electrodes | |
| Hyun Lee et al. | A probabilistic environmentally assisted cracking model for steam generator tubes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |