Failure as a Design      Criterion

   Fracture Mechanics

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Fractography Resource
- Introduction
- Fatigue - Macrofeatures
- Fatigue - Microfeatures
- Fracture - Macrofeatures
- Fracture - Microfeatures (Cleavage, MVC)
- Fracture - Microfeatures (IG)
- Compendium of Fractographs
- Activity 1
- Activity 2


This section of the fractography resource provides a compendium illustrating various types of fracture in specific alloys under certain conditions. It is compiled in the form of Powerpoint presentations and hence is memory intensive, and may take some time to download unless a fast internet connection is present.

  1. Examples of Steel Fractography
    • Fatigue of alloy steel in air
    • Fatigue of alloy steel in vacuum
    • Crack growth by hydrogen embrittlement
    • Fatigue crack growth in low carbon interstitial-free steels [1]
    • Charpy impact fracture
  2. Examples of Aluminium Fractography
    • Bend fatigue of 6261-T6 alloy
    • Torsion fatigue of 6061-T6 alloy
    • Ductile fracture of 6061-T6 alloy
    • Fatigue of 8090-T8511 Al-Li alloy
    • Ductile fracture of 8090-T8511 alloy
    • Bend fatigue of friction stir welded 5383-H321 alloy
    • Ductile fracture of 5383-H321 alloy
  3. Examples of fractography in other materials
    • WC-Co : Compression and tensile fatigue
    • 316L stainless steel - SCC [2]
    • Fatigue in polycarbonate
    • Fast fracture in polycarbonate

  1. Yan B (1996), Intergranular fracture of interstitial-free steels under cyclic loading and its effect on fatigue life, Proceedings of the 37th Mechanical Working and Steel Processing conference, Iron & Steel Society, Vol. 33 pp.101-114.
  2. Sedricks AJ (1992), Stress-corrosion cracking of stainless steels, in Stress-Corrosion Cracking - Materials Performance and Evaluation, RH Jones editor, ASM International, Materials Park, Ohio, USA.


Failure Analysis  -  Fracture Mechanics  -  Failure As A Design Criterion