Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2018;7:82-8 DOI: 10.1016/j.jmrt.2017.06.007
Original Article
Anisotropic damage of titanium plates under uniaxial tension after reverse bending
Nataliia Shkatulyaka,, , Elena Savchuka, Valentin Usovb
a Physics Department, South Ukrainian National Pedagogical University named after K.D. Ushinsky, Staroportofrankovskaya Str., 26, Odessa 65020, Ukraine
b Department of Technological and Professional Education, South Ukrainian National Pedagogical University named after K.D. Ushinsky, Staroportofrankovskaya Str., 26, Odessa 65020, Ukraine
Received 13 February 2017, Accepted 13 June 2017
Abstract

Influence of low-cycle reverse bending and the crystallographic texture on damage anisotropy of commercial titanium sheets during the subsequent uniaxial tensile tests was studied. The fourth-rank order damage tensor D was used at the analysis of damage anisotropy of titanium sheets. Only the sole component D=1−E/E0 of this tensor is not equal to zero for uniaxial tension (E0 and E is the elastic modulus of intact material and current modulus determined from the uniaxial tensile tests, respectively). Damage caused by stresses of proof strength and ultimate strength is estimated. The damage increases with increasing of number of reverse bending cycles. The correlations of damage and mechanical properties anisotropy with the crystallographic texture are found.

Keywords
Reverse bending, Texture, Young's modulus, Anisotropy, Damage, Titanium sheets
J Mater Res Technol 2018;7:82-8 DOI: 10.1016/j.jmrt.2017.06.007
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