EXPANSION OF HIGH TEMPERATURE CREEP TEST DATA FOR FAILURE EVALUATION OF BWR LOWER HEAD IN A SEVERE ACCIDENT

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 1915
Author(s):  
Yoshihito YAMAGUCHI ◽  
Jinya KATSUYAMA ◽  
Yoshiyuki KAJI ◽  
Masahiko OSAKA ◽  
Yinsheng LI
Keyword(s):  
High Temperature ◽  
Test Data ◽  
Creep Test ◽  
Severe Accident ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Lower Head ◽  
Failure Evaluation

scholarly journals Expansion of high temperature creep test data for failure evaluation of BWR lower head in severe accident

2020 ◽  
Vol 7 (3) ◽  
pp. 19-00560-19-00560
Author(s):  
Yoshihito YAMAGUCHI ◽  
Jinya KATSUYAMA ◽  
Yoshiyuki KAJI ◽  
Masahiko OSAKA ◽  
Yinsheng LI
Keyword(s):  
High Temperature ◽  
Test Data ◽  
Creep Test ◽  
Severe Accident ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Lower Head ◽  
Failure Evaluation

scholarly journals Development of failure evaluation method for BWR Lower head in severe accident; high temperature creep test and creep damage model

2017 ◽  
Vol 4 (6) ◽  
pp. 15-00694-15-00694 ◽  
Author(s):  
Yoshihito YAMAGUCHI ◽  
Jinya KATSUYAMA ◽  
Yoshiyuki NEMOTO ◽  
Yoshiyuki KAJI ◽  
Hiroyuki YOSHIDA ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Test ◽  
Evaluation Method ◽  
Damage Model ◽  
Creep Damage ◽  
Severe Accident ◽  
High Temperature Creep ◽  
Lower Head ◽  
Creep Damage Model ◽  
Failure Evaluation

Evaluation of Creep Properties of Alloy 690 Steam Generator Tubes at High Temperature Using Tube Specimen

2019 ◽  
Author(s):  
Jongmin Kim ◽  
Woogon Kim ◽  
Minchul Kim
Keyword(s):  
High Temperature ◽  
Steam Generator ◽  
Creep Test ◽  
Rupture Life ◽  
Creep Rupture ◽  
Severe Accident ◽  
High Temperature Creep ◽  
Creep Life ◽  
Temperature Creep ◽  
Alloy 690

Abstract Thermally induced steam generator (SG) tube failures caused by hot gases from a damaged reactor core can result in a containment bypass event and may lead to release of fission products to the environment. A typical severe accident scenario is a station blackout (SBO) with loss of auxiliary feedwater. Alloy 690 which has increased the Cr content has been replaced for the SG tube due to its high corrosion resistance against stress corrosion cracking (SCC). However, there is lack of research on the high temperature creep rupture and life prediction model of Alloy 690. In this study, creep test was performed to estimate the high temperature creep rupture life of Alloy 690. Based on reported creep data and creep test results of Alloy 690 in this study, creep life extrapolation was carried out using Larson-Miller Parameter (LMP), Orr-Sherby-Dorn (OSD), Manson-Haferd Parameter (MHP), and Wilshire’s approach. And a hyperbolic sine (sinh) function to determine master curves in LMP, OSD and MHP methods was used for improving the creep life estimation of Alloy 690 material.

Study of Mechanical Properties and Fracture Mechanism of a New High-Temperature Alloys

2012 ◽  
Vol 271-272 ◽  
pp. 64-68
Author(s):  
Dong Xu Zhang ◽  
Da Shun Liu ◽  
Xi Ping Zhu
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Base Metal ◽  
Creep Test ◽  
Arc Welding ◽  
Tensile Fracture ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Welding Joints ◽  
High Temperature Tensile

GH3230 is a new type of superalloy,it is the first study about it. This paper studied the high temperature mechanical properties of the GH3230 base metal and argon-arc welding joints by high temperature tensile test,high temperature creep test and SEM analyses. The results showed thatthe ultimate tensile strength of GH3230 argon-arc welding joints is about 85.6% of that of base metal under the same conditions. In the high temperature creep test, GH3230 argon-arc welding joints had a longer creep life than that of base metal. Both GH3230 base metal and argon-arc welding joints showed a ductile fracture. High temperature tensile fracture is cavities fracture and high temperature creep fracture is intergranular fracture. The deformation of GH3230 argon-arc welding joints is much more uniformited and smaller than that of base material, and GH3230 argon-arc welding joints has less cracks.

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