Fatigue Strength of Superalloys Subjected to Combined Mechanical and Thermal Loading

Troshchenko, V. T.; Zaslotskaya, L. A.

doi:10.1016/b978-1-4832-8414-9.50025-0

Cited by 4 publications

(2 citation statements)

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“…In [5] modern problems of estimating resistance of materials and structural elements to a wide range of damaging factors are considered. The application of equations of state, deformation and fracture models under short -and long -term, low -cycle and multicycle loading is substantiated.…”

Section: Introductionmentioning

confidence: 99%

Deformation and damage capacity of thin–walled rods and tubular conduits under alternating loading

Abdusattarov,

Ruzieva,

Abdukadirov

2023

E3S Web of Conf.

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The paper presents deformation and elastoplastic calculation of thin–walled rods (pipelines) under spatial – alternating loading taking into account damageability of material. On the basis of deformation theory and variational principle of Hamilton – Ostrogradsky the system of differential equations of motion (equilibrium) under alternating loading is obtained and the boundary value problems for structural elements are formulated. The algorithms and results of realization of calculation of thin–walled rods (pipes) under alternating loading in view of damage accumulation are given. Numerical results of displacement and force components depending on the number of loading cycles with regard for strain diagrams are given. Effects of secondary plastic deformations and elastic unloading on stress–strain states are shown graphically.

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Section: Introductionmentioning

confidence: 99%

Deformation and damage capacity of thin–walled rods and tubular conduits under alternating loading

Abdusattarov,

Ruzieva,

Abdukadirov

2023

E3S Web of Conf.

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“…In fact, the study of fatigue has generally bypassed real thermal fatigue loading partly because isothermal tests are relatively simple to perform, but also because it has often been felt that such tests carried out at the maximum service temperature would give worst case results. However, several studies which have compared fatigue resistance under thermal cycling conditions with that in isothermal tests have shown that in many cases, the latter, rather than giving a worst case situation, can seriously overestimate the real fatigue life [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Thermal-Mechanical Fatigue Crack Growth in Inconel X-750

Marchand

Pelloux

1985

Time-Dependent Fracture

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Thermal-Mechanical Cyclic Stress-Strain Responses of Cast B-1900+Hf

1988

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A study was undertaken to develop an understanding of the fatigue response of superalloy B-1900+Hf under combined thermal and mechanical strain cycling in air. Comparative evaluations were made with existing thermal-mechanical data of B-1900+Hf and with results of a comprehensive study of the fatigue behavior of the same alloy under isothermal conditions. The thermal-mechanical fatigue (TMF) response was investigated for constant amplitude, fully reversed, mechanically strained cycling of uniaxially loaded specimens in the temperature range from 400 to 925°C. Experiments were conducted both with maximum strain in-phase with maximum temperature and out-of-phase with maximum temperature. The TMF cycling was observed to cause more cyclic hardening than in isothermal fatigue experiments at the maximum and minimum temperatures. In terms of mean stress or plastic strain range, out-of-phase cycling was shown to be more deleterious than in-phase or isothermal cycling. However, few differences were observed in terms of the stabilized stress ranges. The asymmetric cyclic hardening/softening behavior is explained in terms of coarsening of the γ′ and associated strain field. For TMF cycling, the high temperature flow stress depends on the density of the misfit dislocations, whereas the low temperature flow stress is controlled by the magnitude and sign of the applied stress. The TMF cracking modes are discussed. The results show that the fracture criterion under TMF cycling is stress based.

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Fatigue Strength of Superalloys Subjected to Combined Mechanical and Thermal Loading

Cited by 4 publications

References 0 publications

Deformation and damage capacity of thin–walled rods and tubular conduits under alternating loading

Deformation and damage capacity of thin–walled rods and tubular conduits under alternating loading

Thermal-Mechanical Fatigue Crack Growth in Inconel X-750

Thermal-Mechanical Cyclic Stress-Strain Responses of Cast B-1900+Hf

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