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Chapter 7
Fracture Modes and Welding Defects

Excerpt

Imperfections can be broadly classified as those formed during fabrication and those formed during service. Fabrication imperfections include:

  • Imperfection categories
  • Hydrogen-induced cold cracking (HICC)
  • Solidification cracking
  • Reheat cracking
  • Lamellar tearing
  • Weld decay
  • Porosity
  • Solid inclusions
  • Lack of fusion
  • Incomplete root penetration
  • Root concavity
  • Excessive root penetration
  • Overlap
  • Underfill
  • Undercut
  • Crater pipe
  • Burn-through
  • Root oxidation
  • Arc strike
  • Spatter
  • Magnetic arc blow

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