scholarly journals Time-Temperature Parameter Methods and Probabilistic Delayed-Fracture Model for High Temperature Creep Rupture in Ceramics

2013 ◽  
Vol 62 (9) ◽  
pp. 569-574
Author(s):  
Shinya MATSUDA ◽  
Keiji OGI
Keyword(s):  
High Temperature ◽  
Creep Rupture ◽  
Fracture Model ◽  
High Temperature Creep ◽  
Delayed Fracture ◽  
Temperature Creep ◽  
Temperature Parameter

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.

New configuration of a [001] superdislocation formed during high-temperature creep in the γ′ phase of a single-crystal superalloy TMS-138

2006 ◽  
Vol 21 (3) ◽  
pp. 647-654 ◽  
Author(s):  
J.X. Zhang ◽  
H. Harada ◽  
Y. Koizumi
Keyword(s):  
High Temperature ◽  
Tensile Test ◽  
Single Crystal ◽  
Creep Rupture ◽  
Single Crystal Superalloy ◽  
Fourth Generation ◽  
High Temperature Creep ◽  
Burgers Vector ◽  
Temperature Creep ◽  
Interfacial Dislocations

A new configuration of a superdislocation in the γ′ phase of a fourth-generation single-crystal TMS-138 superalloy was found after creep rupture in a [001] tensile test at 1150 °C and 137 MPa. The segments of the superdislocation lie in four directions, i.e., [110], [110], [100], and [010], strictly on a (001) plane with a Burgers vectorb= [001]. This superdislocation is pure edge in character and does not dissociate into superpartials. Microstructural evidence shows that this kind of superdislocation is formed by combination of two interfacial dislocations with different Burgers vectors, i.e., 1/2[011] + 1/2[011] → [001].

Ultra-high temperature creep rupture and transient burst strength of ODS steel claddings

2019 ◽  
Vol 516 ◽  
pp. 347-353 ◽  
Author(s):  
Y. Yano ◽  
Y. Sekio ◽  
T. Tanno ◽  
S. Kato ◽  
T. Inoue ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Rupture ◽  
High Temperature Creep ◽  
Burst Strength ◽  
Temperature Creep ◽  
Ods Steel ◽  
Ultra High Temperature
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