Fracture Strains, Damage Mechanisms and Anisotropy in a Magnesium Alloy Across a Range of Stress Triaxialities Academic Article uri icon

abstract

  • We report on the effect of stress-state triaxiality on damage accumulation leading to fracture at ambient temperature in magnesium alloy AZ31. We find that the strain to failure is weakly sensitive to triaxiality for the conditions investigated, at variance with the behavior of most alloy systems. Using plastic anisotropy measurements, post-mortem fractography and transverse cross-sectioning of specimens at incipient cracking, we discuss the contributions of plastic anisotropy, shear failure and coalescence-controlled cracking to limiting the net effect of stress triaxiality. 2013 Society for Experimental Mechanics.

published proceedings

  • EXPERIMENTAL MECHANICS

author list (cited authors)

  • Kondori, B., & Benzerga, A. A.

citation count

  • 30

publication date

  • March 2014