ON THE PHYSICAL MEANING OF THE STRESS-STRAIN RELATIONSHIP PARAMETERS IN HIGH STRENGTH POLYCRYSTALLINE METALS

A critical study of empirical formulae used to describe the cold-hammering of metals during simple tensile tests leads to the conclusion that the best results are obtained when the power equation is used. The applicability of the formula to high-strength metals is discussed on the basis of three criteria: (1) the agreement between theory and experimental results, (2) the physical significance of the fixed parameters, (3) the simplicity of the formula and the ease with which the parameters can be exactly determined. Three types of equation were considered and at the same time three different strain functions were used. For the three metals investigated, low-carbon steel (for which the extrapolated value of the initial stress at zero elongation is equal to zero), copper and 18/8 high-strength steel, the best results were obtained with the krupkouski equation. Only the holomon equation gave good results for mild steel. (TRRL)

  • Corporate Authors:

    Revue du Metallurgie

    14 rue Boissiere
    Paris 16e,   France 
  • Authors:
    • Truszkowski, W
  • Publication Date: 1980-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00331400
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM