enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Slip bands in metals - Wikipedia

   en.wikipedia.org/wiki/Slip_bands_in_metals

   PSB structure (adopted from [7]). Persistent slip-bands (PSBs) are associated with strain localisation due to fatigue in metals and cracking on the same plane. Transmission electron microscopy (TEM) and three-dimensional discrete dislocation dynamics (DDD [8]) simulation were used to reveal and understand dislocations type and arrangement/patterns to relate it to the sub-surface structure.

3. Lüders band - Wikipedia

   en.wikipedia.org/wiki/Lüders_band

   Lüders bands are a type of plastic bands, slip band or stretcher-strain mark which are formed due to localized bands of plastic deformation in metals experiencing tensile stresses, common to low-carbon steels and certain Al-Mg alloys. [1]

4. Slip (materials science) - Wikipedia

   en.wikipedia.org/wiki/Slip_(materials_science)

   Formation of slip bands indicates a concentrated unidirectional slip on certain planes causing a stress concentration. Typically, slip bands induce surface steps (i.e. roughness due persistent slip bands during fatigue) and a stress concentration which can be a crack nucleation site. Slip bands extend until impinged by a boundary, and the ...

5. Fatigue (material) - Wikipedia

   en.wikipedia.org/wiki/Fatigue_(material)

   In metal alloys, and for the simplifying case when there are no macroscopic or microscopic discontinuities, the process starts with dislocation movements at the microscopic level, which eventually form persistent slip bands that become the nucleus of short cracks.

6. Corrosion fatigue - Wikipedia

   en.wikipedia.org/wiki/Corrosion_fatigue

   Fractures are initiated either by pitting or persistent slip bands. [3] Corrosion fatigue may be reduced by alloy additions, inhibition and cathodic protection, all of which reduce pitting. [ 4 ] Since corrosion-fatigue cracks initiate at a metal's surface, surface treatments like plating, cladding, nitriding and shot peening were found to ...

7. Dislocation - Wikipedia

   en.wikipedia.org/wiki/Dislocation

   Therefore, compressive stress in the direction perpendicular to the half plane promotes positive climb, while tensile stress promotes negative climb. This is one main difference between slip and climb, since slip is caused by only shear stress. One additional difference between dislocation slip and climb is the temperature dependence.

8. Striation (fatigue) - Wikipedia

   en.wikipedia.org/wiki/Striation_(fatigue)

   A striation marks the position of the crack tip at the time it was made. The term striation generally refers to ductile striations which are rounded bands on the fracture surface separated by depressions or fissures and can have the same appearance on both sides of the mating surfaces of the fatigue crack. Although some research has suggested ...

9. Plasticity (physics) - Wikipedia

   en.wikipedia.org/wiki/Plasticity_(physics)

   Plasticity in a crystal of pure metal is primarily caused by two modes of deformation in the crystal lattice: slip and twinning. Slip is a shear deformation which moves the atoms through many interatomic distances relative to their initial positions.