Fatigue damage evaluation of low-alloy steel welded joints in fusion zone and heat affected zone based on frequency response changes in gigacycle fatigue

2014 ◽  
Vol 61 ◽  
pp. 297-303 ◽  
Author(s):  
Chao He ◽  
Chongxiang Huang ◽  
Yongjie Liu ◽  
Qingyuan Wang
Keyword(s):  
Frequency Response ◽  
Fusion Zone ◽  
Alloy Steel ◽  
Fatigue Damage ◽  
Heat Affected Zone ◽  
Welded Joints ◽  
Damage Evaluation ◽  
Low Alloy Steel

Study on fatigue damage evaluation of low alloy steel casting with AE method

2017 ◽  
Vol 2017.92 (0) ◽  
pp. M810
Author(s):  
Yuto TSUZUKI ◽  
Masanori TAKUMA ◽  
Naoki HARADA ◽  
Ken-ichi SAITO ◽  
Yoshimasa TAKAHASHI ◽  
...  
Keyword(s):  
Alloy Steel ◽  
Fatigue Damage ◽  
Steel Casting ◽  
Damage Evaluation ◽  
Low Alloy Steel

Effect of Microstructure on High-Strength Low-Alloy Steel Welded Joint Toughness with Simulation of Heat-Affected Zone Coarse-Grained Area

Metallurgist ◽  
2021 ◽  
Vol 64 (9-10) ◽  
pp. 875-884
Author(s):  
K. G. Vorkachev ◽  
P. P. Stepanov ◽  
L. I. Éfron ◽  
M. M. Kantor ◽  
A. V. Chastukhin ◽  
...  
Keyword(s):  
Alloy Steel ◽  
Heat Affected Zone ◽  
Welded Joint ◽  
High Strength ◽  
Coarse Grained ◽  
Low Alloy Steel ◽  
Effect Of Microstructure

Fracture Toughness in the Ductile-Brittle Transition and Thermal Ageing Behavior of Decarburized Heat Affected Zone of Alloy 52 Dissimilar Metal Welds of Nuclear Components

2014 ◽  
Author(s):  
Pierre Joly ◽  
Miguel Yescas ◽  
Elisabeth Keim
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Alloy Steel ◽  
Heat Affected Zone ◽  
Power Plants ◽  
Base Alloy ◽  
Thermal Ageing ◽  
Low Alloy Steel ◽  
Dissimilar Metal ◽  
Brittle Transition

Dissimilar metal welds (DMW) are used in nuclear power plants between the nozzles of main components in low alloy steel and stainless steel pipes, or safe-ends connected to the main coolant line pipes. AREVA proposes for EPR™ an improved design of DMW involving narrow gap welding without buttering between the low alloy steel nozzles and the stainless steel safe-ends, and the use of a corrosion resistant weld filler metal (Alloy 52). AREVA performed a thorough characterization of this type of welds, which shows a particular microstructure close to the fusion line between the low alloy steel and the nickel base alloy, where the heat affected zone of the low alloy steel is decarburized. This paper presents results of fracture toughness tests performed with the crack tip located in this area, in the ductile to brittle transition in the as post-welded heat treated condition and after thermal ageing. The results show an excellent fracture toughness behavior of this particular area, compared to that of low alloy steel parent metal.

Sign in / Sign up

Export Citation Format

Share Document