STRESS CORROSION OF WELDED HIGH STRENGTH STEELS

Under the conditions of testing employed, low carbon precipitation hardening systems are likely to afford highest SCC resistance. Medium carbon low alloy materials tempered at high temperature to similar hardness levels will be generally comparable in resistance and may be preferable in media causing marked pitting. Provided a post-weld heat treatment is given similar to that applied to the parent material, no loss in SCC resistance is found in the HAZ of a weld. Susceptibility is dependent on parent material and HAZ hardness and microstructure. With increasing hardness, failure becomes more probable. The presence of twinned martensite in particular greatly increases the risk of SCC in service. Failure may take place in a ductile manner, by cleavage or intergranularly depending on the microstructure and applied stress intensity.

  • Corporate Authors:

    Welding Institute

    Abingdon Hall
    Cambridge CB1 6AL,   England 
  • Authors:
    • Gooch, T G
  • Publication Date: 1973

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00072601
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Dec 31 1974 12:00AM