PSBs and Non-Propagation of Small Surface and Interior Cracks in Polycrystalline Copper

Stefanie E. Stanzl-Tschegg; Bernd M. Schönbauer

doi:10.4028/www.scientific.net/KEM.592-593.777

Paper Titles

Role of Microstructure on Fracture Behavior of T91 Steel in Presence of Liquid Sodium
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Transition from Straight to Fractal Cracks due to Projectile Penetration
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The Effect of Temperature on the Course of Refractory Castables Cracking
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Temporal and Spatial Evolution of Bursts in a Fiber Bundle Model of Creep Rupture
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PSBs and Non-Propagation of Small Surface and Interior Cracks in Polycrystalline Copper
p.777

The True Shape of Persistent Slip Markings in Fatigued Metals
p.781

Slip Activity of Persistent Slip Bands in early Stages of Fatigue Life of Austenitic 316L Steel
p.785

Propagation of Fatigue Cracks in Notched Specimens of EN AW 7475-T761
p.789

Trajectory and Crystallography of Crack Growth in Austenitic Steel after LCF Tests
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593PSBs and Non-Propagation of Small Surface and...

PSBs and Non-Propagation of Small Surface and Interior Cracks in Polycrystalline Copper

Abstract:

PSB formation and its relevance for an eventual fatigue limit of polycrystalline electrolytic copper was studied in the very-high cycle fatigue regime with the ultrasound fatigue loading method. PSBs are formed at much lower stress/strain amplitudes than reported in earlier literature, if a high enough number of cycles is applied. Fatigue fracture takes place at approximately 50% higher amplitudes than needed for PSB formation, which is likewise in contrast to former literature results. Non-propagation of small cracks, originating from intrusions or PSB-induced non-propagating grain-boundary cracks are made responsible for this different material response.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

777-780

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.777

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Online since:

November 2013

Authors:

Stefanie E. Stanzl-Tschegg, Bernd M. Schönbauer

Keywords:

Fatigue Limit, Non-Propagating Cracks, Persistent Slip Band (PSB), Small Crack, Ultrasonic Fatigue, Very High Cycle Fatigue (VHCF)

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