Influence of texture on twin boundary cracks in fatigued austenitic stainless steel

Blochwítz, C.; Tirschler, W.

doi:10.1016/s0921-5093(02)00126-0

Cited by 61 publications

(32 citation statements)

References 10 publications

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“…10c: In the interior, the crack moves out from the TB and propagates in the tensile opening mode with blunting/resharpening by at least two slip systems in the grain on the left side. Repolishing experiments indeed reveal, that the cracks leave the TB plane at depths of several micrometers [13].…”

Section: Crack Propagation Scenariomentioning

confidence: 88%

“…In such cases, macrocracks could be observed running through the gauge length, however, the specimens still remain compact allowing good surface observations. For more details compare [13].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…To explain this behaviour, we modified the "Neumann model" for medium plastic strain amplitudes taking into account plastic strains in the active slip systems and found good agreement between the predicted and the observed TB crack nuclei. The propagation of short cracks from TBs, however, could be explained only when both the surface tractions caused by elastic anisotropy and the related slip processes in the twinned grains are considered [13].…”

Section: Introductionmentioning

confidence: 99%

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Twin boundaries as crack nucleation sites

Blochwítz¹,

Tirschler

2004

Cryst. Res. Technol.

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Coherent twin boundaries (TBs) in f.c.c. metals are considered to have low energy. Nevertheless, even TBs are preferred sites for crack nucleation in materials loaded at very small alternating plastic strain amplitudes (high cycle fatigue). In the present paper, the mechanism of short crack propagation starting from TBs was studied for medium amplitudes and described taking into account both elastic and plastic anisotropy effects. A strong dependence of the TB crack density on the meso-texture of the material was found. The twin part of the meso-texture was described by the <111> rotation vectors of the TBs observed using the EBSD technique in the SEM. The rotation vectors of the damaged TBs were arranged in a "damaging cone" around the specimen axis. The risk of TB cracks in texturized rolling plates can be reduced by a favourable alignment of the specimen in the rolling plate avoiding the damaging cone of rotation vectors.

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Section: Crack Propagation Scenariomentioning

confidence: 88%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Twin boundaries as crack nucleation sites

Blochwítz¹,

Tirschler

2004

Cryst. Res. Technol.

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“…It has been documented that the TBs are normal to the growth direction during magnetron sputtering, electrodeposition or solution precipitation 8,17,38 . There could also be TBs of pronounced meso-texture, which appeared after cold rolling and consequent thermal treatment 39 . These methods enable the control over the TB orientations in real samples.…”

Section: Discussionmentioning

confidence: 99%

Controllable fatigue cracking mechanisms of copper bicrystals with a coherent twin boundary

Zhang

et al. 2014

Nat Commun

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“…The low cycle and high cycle fatigue behavior of DSSs in ambient air, corrosive environment and at high temperature were studied extensively [1][2][3]. In recent years progress was made in understanding the fatigue crack initiation behavior in low cycle fatigue (LCF) and high cycle fatigue (HCF) regimes in DSSs [4][5][6][7][8][9][10]. This has assumed significance as microstructure based fatigue life prediction is widely attempted for a number of metallic alloys for accuracy and better predictability.…”

Section: Introductionmentioning

confidence: 99%