Fatigue crack behavior of incology 800 tested in the bend and the push-pull mode

Ermi, A.M.; Nahm, H.; Moteff, J.

doi:10.1016/0025-5416(77)90077-5

Cited by 8 publications

(1 citation statement)

References 10 publications

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“…Equation (7) can be rewritten as i.e. N i is the experimentally observed number of cycles required to generate a crack of depth d. For design applications d is about several grain diameters, typically 0.1 mm [21]. At 50% of life, where surface initiation in small specimens of 3 Cr-Mo-V at 550°C was observed, the corresponding crack depth was 0.2 mm [22].…”

Section: Application To High Strain Fatiguementioning

confidence: 99%

The Prediction of Crack Growth Rates From Total Endurances in High Strain Fatigue

Skelton

1979

Fat Frac Eng Mat Struct

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Abstract-A method of calculating crack growth rates in high strain fatigue from total endurance data is presented. Endurances are known to be affected by dwell periods and environment and the expression derived takes these into account. The basic argument is that crack propagation may be regarded as increments of successive reinitiation and so the deeper a crack grows, with an accompanying increase in strain concentration at the tip, the fewer fatigue cycles are required for the next step. Previously derived expressions for strain concentration are employed which require a knowledge of the cyclic strain hardening properties of the material. These are produced in detail for a cast 4 Cr-Mo-V steel at 550°C.Two constants in the resulting propagation expression are semi-empirical, but if the surface (plastic or total) strain range is known then cyclic crack growth rates may be calculated for any crack depth. It is also shown that in the limiting case of zero surface plastic strain, the expression reduces to that observed for crack growth under linear elastic conditions.

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Section: Application To High Strain Fatiguementioning

confidence: 99%

The Prediction of Crack Growth Rates From Total Endurances in High Strain Fatigue

Skelton

1979

Fat Frac Eng Mat Struct

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Low‐cycle fatigue of X 2 NiCoMo 18 12 and X 10 NiCrAITi 32 20

Detert¹,

Adolfs²

1992

Steel Research

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The low‐cycle fatigue and short crack‐growth behaviour of an ultra‐high strength maraging steel and a high‐nickel austenitic steel have been studied. The tests were performed in a laboratory environment at room temperature in push‐pull cycles with constant strain amplitudes of 0.25 to 2 %. Short crack‐growth investigations were performed using bending specimens loaded by a resonance bending machine. Crack growth was measured using the replica method. The cyclic and tension stress strain behaviour has been compared. Fatigue tests were interpreted according to the recommended practice of ASTM‐E 606‐80. First microcracks were observed after 10 to 70 % of the fatigue life.

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Crack Initiation and Low-Cycle Fatigue Behaviour of AlZnMgccu 1.5, X 10 Nicralti 32 20 and X 2 Nicomo 18 12

Adolfs

Detert

1992

Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3

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Fatigue crack behavior of incology 800 tested in the bend and the push-pull mode

Cited by 8 publications

References 10 publications

The Prediction of Crack Growth Rates From Total Endurances in High Strain Fatigue

The Prediction of Crack Growth Rates From Total Endurances in High Strain Fatigue

Low‐cycle fatigue of X 2 NiCoMo 18 12 and X 10 NiCrAITi 32 20

Crack Initiation and Low-Cycle Fatigue Behaviour of AlZnMgccu 1.5, X 10 Nicralti 32 20 and X 2 Nicomo 18 12

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