WELDABILITY OF STRUCTURAL STEEL - DEVELOPMENT OF A SIMULATION TEST FOR STRUCTURES

SOUDABILITE DES ACIERS DE CONSTRUCTION METALLIQUE - MISE AU POINT D'UN ESSAI DE SIMULATION DES STRUCTURES

In welded systems the risk of low-temperature cracking resides in three essential parameters: (1) stresses applied to the welded joints; (2) presence of hydrogen introduced during welding in the heat affected zone; and (3) the presence of hardening structures. This last factor is the only one depending exclusively on the base material. It was thus necessary to predict by means of a simple test the hardness of the base material under the weld bead for different welding energies. The test developed is derived from the jominy hardenability test; it enables the distance to the hardened extremity to be related to cooling and therefore to the welding energy for the thicknesses considered. The specimen"heating phase was reduced to 10 seconds by the use of a high-frequency generator oven. This device makes it possible to reduce to a minimum the effects of diffusion by maintaining a high temperature while keeping the equipment costs relatively low. Cooling is achieved by quenching at one extremity. Hardness measurements are made to find the hardening structures. (TRRL)

  • Corporate Authors:

    Laboratoire Central des Ponts et Chausees (LCPC)

    Boulevard Lefebvre 58
    Paris Cedex 15,   France  F-75732
  • Authors:
    • Fuchs, J
    • Persy, J P
  • Publication Date: 1979-7-8

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00325124
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM