scholarly journals The Influence Of Load History On Durability Of P92 Steel Used For The Construction Of Energy Pipelines

2015 ◽  
Vol 60 (3) ◽  
pp. 1853-1858 ◽  
Author(s):  
M. Cieśla ◽  
G. Junak
Keyword(s):  
Plastic Deformation ◽  
Mechanical Characteristics ◽  
Low Cycle Fatigue ◽  
Research Problem ◽  
Cycle Fatigue ◽  
Load History ◽  
Heavy Load ◽  
P92 Steel ◽  
Research Material ◽  
Reverse Situation

Abstract The research material used in the study was the martensitic creep-resistant steel P92 used for the manufacture of pipes being part of power generation units subject to heavy load. The research problem focused on two issues. The first one was to analyze how the plastic deformation cumulated in the material in low-cycle fatigue conditions affects the characteristics of the material in creep conditions in a temperature of 600ºC. The other one was concerned with analysis of a reverse situation, i.e. how the initial plastic deformation of the material in creep conditions changes the mechanical characteristics of the steel under low-cycle fatigue conditions in a temperature of 600ºC.

Damage behaviour in different micro-regions of P92 steel weldment under sequential low cycle fatigue and creep loading

2021 ◽  
pp. 107935
Author(s):  
Wei Zhang ◽  
Xiaowei Wang ◽  
Zitong Kang ◽  
Tianyu Zhang ◽  
Yong Jiang ◽  
...  
Keyword(s):  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
P92 Steel ◽  
Steel Weldment ◽  
Creep Loading

The Influence of Plastic Deformation on the Low-Cycle Fatigue During the Burnishing of Holes in Flat Specimens of D16chT Steel

2018 ◽  
Vol 50 (3) ◽  
pp. 448-452
Author(s):  
O. V. Tymoshenko ◽  
V. V. Koval’ ◽  
A. M. Babak ◽  
Quan Fam Dyk ◽  
Yu. M. Sydorenko
Keyword(s):  
Plastic Deformation ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

Low Cycle Fatigue Behavior of Original Ferritic P92 Steel at High Temperature: Experiments and Simulations

2015 ◽  
Author(s):  
Xiaowei Wang ◽  
Jianming Gong ◽  
Yong Jiang ◽  
Yanping Zhao
Keyword(s):  
Plastic Material ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Constant Strain Rate ◽  
Cyclic Softening ◽  
Isotropic Hardening ◽  
Cycle Fatigue ◽  
Stress Strain ◽  
P92 Steel ◽  
Softening Behavior

Low cycle fatigue tests of original ferritic P92 steel at high temperatures and different strain amplitudes were conducted to investigate its cyclic softening behavior and fracture behavior. LCF tests of strain amplitudes ranging from ±0.2% to ±0.8% were performed in fully reversed manner with constant strain rate at 600 °C and 650 °C. In order to represent the different hysteresis stress-strain curves and the cyclic softening behavior of P92 steel, a cyclic plastic material model was used. In the model, improved nonlinear isotropic hardening parameter was proposed to make better simulation of the cyclic softening behavior. Based on the simulated stress-strain hysteresis loops, an energy-based life prediction model was used to predict the low cycle fatigue life. When compared with experimental responses, the simulations and predicted life were found to be quite reasonable. Low cycle fatigue fractography of the P92 steel was also observed, and it was found to be associated with the different strain amplitudes imposed on the specimen, the larger strain amplitude the more amounts of crack initiation sites could be found.

A study on low-cycle fatigue of high chromium heat-resistant steel

2019 ◽  
Vol 33 (14n15) ◽  
pp. 1940034
Author(s):  
Il Heon Jeong ◽  
Yeong Min Park ◽  
Mun Ki Bae ◽  
Chi Hwan Kim ◽  
Tae Gyu Kim
Keyword(s):  
Plastic Deformation ◽  
High Temperature ◽  
Nuclear Power ◽  
Low Cycle Fatigue ◽  
Turbine Blades ◽  
Resistant Steel ◽  
Cycle Fatigue ◽  
Heat Resistant Steel ◽  
Heat Resistant ◽  
Treatment Conditions

The purpose of this study is to examine the low-cycle fatigue (LCF) characteristics of high-chrome heat-resistant steel, which is used in a high-temperature environment, at both ambient and high temperature. High-chrome heat-resistant steel, which is used for the turbine blades of a nuclear power plant, can be subject to plastic deformation due to overloading conditions at startup and shutdown. It is therefore very important to evaluate the damage caused by LCF, which is considered as fatigue damage due to plastic deformation. To examine the mechanical properties of high-chrome heat-resistant steel, the tensile strength was tested under different heat treatment conditions. In addition, the LCF characteristics were tested at ambient temperature and [Formula: see text].

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