session 4 micro aspects of fatigue of metals n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Session # 4 Micro-aspects of fatigue of metals PowerPoint Presentation
Download Presentation
Session # 4 Micro-aspects of fatigue of metals

Loading in 2 Seconds...

play fullscreen
1 / 12

Session # 4 Micro-aspects of fatigue of metals - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

Session # 4 Micro-aspects of fatigue of metals. Cyclic behavior Fatigue crack nucleation/growth at the microstructural level. Cyclic stress-strain curves. Cyclic stress-strain curves. AISI 4140 steel. Thielen P.N. et al. (1976).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Session # 4 Micro-aspects of fatigue of metals' - andrew


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
session 4 micro aspects of fatigue of metals
Session # 4Micro-aspects of fatigue of metals
  • Cyclic behavior
  • Fatigue crack nucleation/growth at the microstructural level
cyclic stress strain curves
Cyclic stress-strain curves

AISI 4140 steel

Thielen P.N. et al. (1976)

dislocation structures persistent slip bands tem of copper single crystals
Dislocation structures – persistent slip bands – TEM of copper single crystals

Mughrabi et al. (1979)

slide9

Veins formations

Ladder-like structure of PSB in fatigued Cu (Suresh, 1998)

Jin, N. Y. Acta Metallurgica, 1989

Lepisto et al. Scripta Metall. 1984

b

MD simulation

MD simulation

fatigue cracks along shear bands
Fatigue cracks along shear bands

AA 2024-T351

Single crystal SC16

crack interaction with grain boundaries bi crystal aa 7075
Crack interaction with grain boundaries bi-crystal AA 7075

Low grain boundary angle

High grain boundary angle