FATIGUE CRACK PROPAGATION DATA OBTAINED FROM PARENT PLATE, WELD METAL AND HAZ IN STRUCTURAL STEELS

For low strength materials (unayial yield strength less than approximately 300 N/sq. mm), the slope of the crack propagation curve, representing data obtained from center-notched sheet specimens, may not change at the fracture mode transition. Providing the fracture path is transgranular, the rates of crack propagation in weld metals, HAZs and structural steels in the range of yield strengths 375-636 N/sq. mm are not strongly influenced by the material microstructure. The incidence of intergranular fracture causes the rate of crack propagation to increase. Tempering reduces the incidence of intergranular fracture and consequently improves the fatigue properties of the material.

• Corporate Authors:

  Welding Institute

  Abingdon Hall
  Cambridge CB1 6AL,   England 
• Authors:
  • Maddox, S J
• Publication Date: 1974

Media Info

• Features: References;
• Pagination: p. 26-60
• Serial:
  • Welding Research International
  • Volume: 4
  • Issue Number: 1
  • Publisher: Welding Institute

Subject/Index Terms

• TRT Terms: Cracking; Fatigue cracking; Fracture mechanics; Heat affected zone (Metals); Joints; Welds
• Uncontrolled Terms: Crack propagation; Welded joints
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00062610
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Dec 31 1974 12:00AM