Further observations on creep enhanced by a liquid phase in porous potassium chloride Academic Article uri icon


  • The enhancement of creep by the introduction of aqueous solutions into the porosity of nonfully dense, cold compacted potassium chloride powder has been characterized in room temperature experiments. This phenomenon was first investigated by Pharr and Ashby, who concluded that the mechanism of creep is diffusionally controlled, with the liquid acting as a rapid diffusion path. Current results show that at high stresses, a second mechanism becomes important. This conclusion is based on differences in the stress exponent for creep, the strain at the onset of tertiary creep, and the volumetric strain behavior at low and high stresses. The mechanism is shown to involve grain boundary sliding accommodated by the opening of intergranular cracks and voids. 1985.

published proceedings

  • Acta Metallurgica

author list (cited authors)

  • Sheikh, G. R., & Pharr, G. M.

citation count

  • 31

complete list of authors

  • Sheikh, Gh R||Pharr, GM

publication date

  • February 1985