Fractographic Analysis of a Steam Turbine Disk Failure

2008 ◽  
pp. 346-346-22
Author(s):  
HC Burghard ◽  
DR McCann
Keyword(s):  
Steam Turbine ◽  
Turbine Disk ◽  
Fractographic Analysis ◽  
Disk Failure

Investigation of a turbine disk failure

1998 ◽  
Vol 5 (3) ◽  
pp. 229-234
Author(s):  
D Zhang ◽  
C.H Tao
Keyword(s):  
Turbine Disk ◽  
Disk Failure

Improving the Toughness of 3-1/2NiCrMoV Steam Turbine Disk Forgings

1989 ◽  
Vol 111 (1) ◽  
pp. 61-70 ◽  
Author(s):  
R. L. Bodnar ◽  
K. A. Taylor ◽  
K. S. Albano ◽  
S. A. Heim
Keyword(s):  
Heat Treatment ◽  
Stress Corrosion ◽  
Steam Turbine ◽  
Stress Corrosion Cracking ◽  
Turbine Disk ◽  
Notch Toughness ◽  
Preliminary Heat Treatment ◽  
Final Heat Treatment ◽  
Final Heat ◽  
Turbine Disks

Due to the in-service stress corrosion cracking of some 3-1/2NiCrMoV steam turbine disks, the Charpy V-notch toughness requirements for replacement forgings have dramatically increased in recent years. In response to the new requirements, several avenues for improving the toughness of 3-1/2NiCrMoV steel have been explored and are discussed in this paper. Improvements in forging practice, preliminary heat treatment, final heat treatment and composition are recommended which allow the new requirements to be met.

Critical Zone Approach for Structural Integrity of Power Engineering Components

2015 ◽  
Vol 750 ◽  
pp. 89-95
Author(s):  
V.N. Shlyannikov
Keyword(s):  
Steam Turbine ◽  
Strain State ◽  
Turbine Disk ◽  
Loading Conditions ◽  
Loading History ◽  
Test Cycle ◽  
Stress Strain ◽  
Stress Strain State ◽  
Turbine Disks ◽  
Critical Zones

This study is concerned with assessing the integrity of cracked steam turbine rotors components which operate under cyclic loading conditions. Damage accumulation and growth have occurred on the inner surface of slot fillet of key and in a disk and blade rivet attachment. Full-size stress-strain state analysis of turbine disk was performed for different stage of lifetime under considering loading conditions. As a result accumulated damage in critical zones of turbine disks depending on time of loading is defined. The tensile tests were performed for determination the main mechanical properties of disk’s material after loading history. The smooth and notched specimens were cut out from critical zones of turbine disk with given operating time. The low-cycle fatigue tests were performed with the harmonic test-cycle. Additional tests were performed on special designed program test-cycle, which equivalent to start-stop cycle of turbine disk. An engineering approach to the prediction of residual lifetime of turbine disks which is sensitive to the loading history at maintenance is proposed. Approximate estimations of carrying capacity are presented for the different stress-strain state of steam turbine disks at the operation.

A fracture analysis of the steam turbine disk with key-slot

1982 ◽  
Vol 16 (1) ◽  
pp. 137
Author(s):  
Qiu-Lin Gu ◽  
Zhong-Fa Yang ◽  
Xiu-Yuan Zheng ◽  
Chun-Tian Zhou ◽  
Yun-Zhao Huang
Keyword(s):  
Steam Turbine ◽  
Fracture Analysis ◽  
Turbine Disk

The Marine Steam-Turbine from 1894 to 1910.—II

1912 ◽  
Vol 73 (1880supp) ◽  
pp. 18-19
Author(s):  
Charles A. Parsons
Keyword(s):  
Steam Turbine

A Few Notes on the Steam Turbine

1904 ◽  
Vol 57 (1480supp) ◽  
pp. 23719-23720
Author(s):  
G. L. Parsons
Keyword(s):  
Steam Turbine
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