RESIDUAL STRESSES IN WELDMENTS IN HIGH-STRENGTH STEELS

The systematic results of series experimental studies on thermal strain changes, temperature histories, deflection changes during welding and residual stresses existing in weldments after cooling were presented. Investigations were conducted on simple weldments made with several types of materials including mild steel, 308 stainless steel, T-1 steel, HY-80 steel and a Ti-6A1-2Cb-1Ta-0.8Mo alloy. Comparisons on experimental data were made with the results of one-dimensional computer program that have been developed in Department of Ocean Engineering, M.I.T. The one-dimensional analysis appears to be sufficiently accurate for temperature predictions. Better agreements were obtained in strain changes and deflection changes in GTA welded plates than that in GMA welded plates. Residual stresses are about 50 percent yield strength of the material in high-strength steels such as HY-80, T-1 steel and Ti-6211 alloy. The accuracy of the analysis is limited due to lack of knowledge of the variation of the material properties with temperature and that of the heat losses during welding.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Civil Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • HWANG, J-S
  • Publication Date: 1976-2

Subject/Index Terms

Filing Info

  • Accession Number: 00131217
  • Record Type: Publication
  • Source Agency: Massachusetts Institute of Technology
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM