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Your search keyword '"12Cr steel"' showing total 4 results
Start Over Descriptor "12Cr steel" Publisher gruppo italiano frattura
4 results on '"12Cr steel"'

1. High temperature initiation and propagation of cracks in 12%Cr-steel turbine disks

Author

S. Foletti, A. Lo Conte, S. Salgarollo, F. Bassi, and A. Riva

Subjects
Fracture mechanics, Creep Crack Growth, 12Cr steel, C-integral, Reference stress, Mechanical engineering and machinery, TJ1-1570, Structural engineering (General), TA630-695
Abstract

This work aims to study the crack propagation in 12%Cr steel for turbine disks. Creep Crack Growth (CCG) tests on CT specimens have been performed to define the proper fracture mechanics which describes the initiation of the crack propagation and the crack growth behaviour for the material at high temperature. Results have been used to study the occurrence of crack initiation on a turbine disk at the extreme working temperature and stress level experienced during service, and validate the use of C* integral in correlating creep growth rate on the disk component, in case C* is numerically calculated through FEM analysis or calculated by the use of reference stress concept.

Published
2013
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2. Creep crack initiation and growth in 12%Cr-steel turbine disks.

Author

Foletti, S., Lo Conte, A., Salgarollo, S., Bassi, F., and Riva, A.

Subjects
*FRACTURE mechanics, *FINITE element method, *CRACK initiation (Fracture mechanics), *CRACK propagation (Fracture mechanics), *MATERIALS science
Abstract

In this paper a 12%Cr steel for turbine disk has been examined. CCG test on compact tension (CT) specimens according to the recommendations of ASTM-E1457 have been carried out in order to obtain parameters characterizing the creep crack initiation of the material, and to evaluate the proper fracture mechanics parameter which defines the creep crack growth behaviour of the material. The results have been applied to study the occurrence of crack initiation on a turbine disk made of the examined material, at the extreme stress level and temperature experienced in service, and to validate the use of the C* integral in correlating creep growth rate on the component, both when C* is numerically calculated through FEM analysis and reference stress solution. [ABSTRACT FROM AUTHOR]

Published
2013

3. High temperature initiation and propagation of cracks in 12%Cr-steel turbine disks.

Author

Foletti, S., Lo Conte, A., Salgarollo, S., Bassi, F., and Riva, A.

Subjects
*EFFECT of temperature on metals, *SURFACE cracks, *TURBINES, *CHROMIUM, *STEEL, *STRAINS & stresses (Mechanics)
Abstract

This work aims to study the crack propagation in 12%Cr steel for turbine disks. Creep Crack Growth (CCG) tests on CT specimens have been performed to define the proper fracture mechanics which describes the initiation of the crack propagation and the crack growth behaviour for the material at high temperature. Results have been used to study the occurrence of crack initiation on a turbine disk at the extreme working temperature and stress level experienced during service, and validate the use of C* integral in correlating creep growth rate on the disk component, in case C* is numerically calculated through FEM analysis or calculated by the use of reference stress concept. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

4. High temperature initiation and propagation of cracks in 12%Cr-steel turbine disks

Author

A. Lo Conte, S. Salgarollo, F. Bassi, Stefano Foletti, and Andrea Riva

Subjects
Work (thermodynamics), Materials science, business.industry, Mechanical Engineering, lcsh:Mechanical engineering and machinery, 12Cr steel, lcsh:TA630-695, Fracture mechanics, C-integral, Creep Crack Growth, Structural engineering, lcsh:Structural engineering (General), Crack growth resistance curve, Turbine, Reference stress, Finite element method, Crack closure, Fracture mechanics, Creep Crack Growth, 12Cr steel, C-integral, Reference stress, Creep, Mechanics of Materials, lcsh:TJ1-1570, Growth rate, Composite material, business
Abstract

This work aims to study the crack propagation in 12%Cr steel for turbine disks. Creep Crack Growth (CCG) tests on CT specimens have been performed to define the proper fracture mechanics which describes the initiation of the crack propagation and the crack growth behaviour for the material at high temperature. Results have been used to study the occurrence of crack initiation on a turbine disk at the extreme working temperature and stress level experienced during service, and validate the use of C* integral in correlating creep growth rate on the disk component, in case C* is numerically calculated through FEM analysis or calculated by the use of reference stress concept.

Published
2013

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