THE WELDABILITY OF STRUCTURAL STEELS. EVALUATION OF THE HEAT AFFECTED ZONE PROPERTIES

The weldability of common structural steels (C-Mu and C-Mn-Nb) with yield strengths of 355 to 410 N/sq mm has been examined, in the case of submerged arc welding with heat inputs corresponding to the upper practical limits for this process. Tests were performed on actual joints. Two parameters: the cooling time between 800 and 500 deg C (tr 8/5) and the period of time during which the fusion line is maintained above 1050 deg C (ts 1050) are proposed for the comparison of the thermal fields in the HAZ of the differents joints. Values of tr and ts can be assessed from tables and charts. Local properties: Charpy V impact values and hardness are discussed. The behaviour of the welded joints in full thickness regarding brittle fracture is studied by wide plate tests with machined defects or fatigue cracks. From this study it may be concluded that for the steels examined, the risk of brittle fracture is low when the welding conditions remain in the proposed limits.

• Corporate Authors:

  Centre de Recherches Metallurgigues

  Abbaye du Val-Benoit
  Liege,   Belgium 
• Authors:
  • Marquet, F
  • Defourny, J
  • Marique, C
  • Lamberigts, M
  • Bragard, A
• Publication Date: 1977-4

Media Info

• Pagination: 13 p.
• Serial:
  • CRM Metallurgical Reports
  • Publisher: Centre de Recherches Metallurgigues

Subject/Index Terms

• TRT Terms: Fracture mechanics; Heat affected zone (Metals); Structural steel; Submerged arc welding; Welding
• Uncontrolled Terms: Weldability
• Old TRIS Terms: Charpy tests
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00168345
• Record Type: Publication
• Source Agency: CRM Metallurgical Reports
• Report/Paper Numbers: No. 50
• Files: TRIS
• Created Date: Feb 16 1978 12:00AM