Effect of long-term service exposure on microstructure and mechanical properties of a crmov steam turbine rotor steel

1991 ◽  
Vol 22 (8) ◽  
pp. 1811-1820 ◽  
Author(s):  
A. Joarder ◽  
D. S. Sarma ◽  
N. S. Cheruvu
Keyword(s):  
Mechanical Properties ◽  
Steam Turbine ◽  
Turbine Rotor ◽  
Rotor Steel ◽  
Steam Turbine Rotor ◽  
Microstructure And Mechanical Properties ◽  
Service Exposure

scholarly journals STRUCTURE AND MECHANICAL PROPERTIES OF 21HMF STEEL STEAM TURBINE ROTOR MATERIALS AFTER LONG-TERM OPERATION FOR A TIME SIGNIFICANTLY EXCEEDING THE DESIGN TIME

2021 ◽  
Vol 73 (2) ◽  
pp. 40-55
Author(s):  
Joanna FURMANEK ◽  
Janusz DOBRZAŃSKI
Keyword(s):  
Mechanical Properties ◽  
Steam Turbine ◽  
Functional Properties ◽  
Turbine Rotor ◽  
Working Time ◽  
Term Operation ◽  
Steam Turbine Rotor ◽  
Design Time ◽  
Turbine Rotors

The article presents the results of tests of materials for steam turbine rotors with various degrees of depletion in order to determine the suitability of these components for further operation after significantly exceeding the design working time on the basis of the assessment of the microstructure condition and a set of functional properties.

scholarly journals Investigation of bowing of steam turbine rotor during long term service.

1984 ◽  
Vol 24 (2) ◽  
pp. 107-112 ◽  
Author(s):  
Seishin KIRIHARA ◽  
Masao SHIGA ◽  
Mitsuo KURIYAMA ◽  
Ryoichi SASAKI ◽  
Katsukuni HISANO
Keyword(s):  
Steam Turbine ◽  
Turbine Rotor ◽  
Steam Turbine Rotor

scholarly journals Low cycle fatigue modelling of a steam turbine rotor steel

2019 ◽  
Vol 23 ◽  
pp. 149-154
Author(s):  
Ahmed Azeez ◽  
Robert Eriksson ◽  
Mattias Calmunger ◽  
Stefan B. Lindström ◽  
Kjell Simonsson
Keyword(s):  
Steam Turbine ◽  
Low Cycle Fatigue ◽  
Turbine Rotor ◽  
Rotor Steel ◽  
Cycle Fatigue ◽  
Steam Turbine Rotor

Nondestructive Evaluation of In-Service Toughness Degradation for Cr-Mo-V Steam Turbine Rotor Steel

1990 ◽  
Vol 18 (3) ◽  
pp. 172 ◽  
Author(s):  
A Wolfenden ◽  
K Kimura ◽  
T Inukai ◽  
K Saito ◽  
H Kashiwaya
Keyword(s):  
Nondestructive Evaluation ◽  
Steam Turbine ◽  
Turbine Rotor ◽  
Rotor Steel ◽  
Steam Turbine Rotor

Evaluation of Fatigue Damage by X-Ray Diffraction Technique of Steam Turbine Rotor Steels at Elevated Temperatures

2009 ◽  
Author(s):  
Jaroslav Fiala ◽  
Vaclav Mentl ◽  
Vladislav Kolarik ◽  
Michal Chocholousek
Keyword(s):  
Mechanical Properties ◽  
Steam Turbine ◽  
Fatigue Damage ◽  
Elevated Temperatures ◽  
Turbine Rotor ◽  
Residual Lifetime ◽  
X Ray Diffraction ◽  
Time Service ◽  
X Ray ◽  
Steam Turbine Rotor

In many industrial applications materials are subjected to degradation of mechanical properties as a result of real service conditions. The assessment of the remaining lifetime of components and structures is commonly based on correlated procedures including numerous destructive, non-destructive and mathematical techniques that should guarantee reasonable precise assessment of the current damage extent of materials in question and the remnant lifetime assessment. The assessment of the remaining lifetime by X-ray diffraction technique is based on the fact that mechanical properties of the most materials depend strongly on crystallite size and orientation of ingredients, which are the crucial parameters for the determination of the ageing state and the prediction of residual lifetime of the components. X-ray diffraction technique proved to be useful as a tool for the assessment of material degradation extent after a long-time service. Framework 5 project “XPECTION” [1] was dealing with this task with respect to high temperature creep degradation of boiler tube steels. In this presentation, the X-ray diffraction technique was applied to reveal subtle details of the microstructural changes induced by fatigue. Several steam turbine rotor steels were fatigue tested at elevated temperatures up to 600°C at strain control regime. After the tests, the X-ray diffraction method was used to correlate the extent of fatigue damage with the X-Ray diffraction patterns to be able to assume the life-time exhaustion caused by fatigue loading in service.

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