Determining Subsequent Yield Surface of Pure Titanium Sheet by Use of Abrupt Strain Path Change

In order to study the applicability of the proposed hybrid constitutive model for cyclic plasticity to nonproportional loading, type 304 stainless-steel specimens subjected to sinusoidal loading that could change the degree of nonproportionality of the strain path were examined in detail. The subsequent yield surface during the loading was discussed in advance because the plastic deformation induced anisotropy coefficient tensor in the yield function had to be determined from the yield surface obtained by the experiment. From the experimental results, the subsequent yield surfaces during the loading could be assumed to be of the quadratic form of stress. The simulations based on the model gave a good description of the sinusoidal loading, irrespective of the degree of nonproportionality of the strain path.

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The Stress vactor and the Subsequent Yield Surface in Loading along the Strain Path with a Corner

Bulletin of JSME ◽

10.1299/jsme1958.17.1405 ◽

1974 ◽

Vol 17 (113) ◽

pp. 1405-1412 ◽

Cited By ~ 8

Author(s):

Eiryo SHIRATORI ◽

Kozo IKEGAMI ◽

Kenji KANEKO

Keyword(s):

Yield Surface ◽

Strain Path ◽

Subsequent Yield Surface

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Characterisation of kinematic hardening and yield surface evolution from uniaxial to biaxial tension with continuous strain path change

CIRP Annals ◽

10.1016/j.cirp.2014.03.039 ◽

2014 ◽

Vol 63 (1) ◽

pp. 297-300 ◽

Cited By ~ 8

Author(s):

Marion Merklein ◽

Sebastian Suttner ◽

Alexander Brosius

Keyword(s):

Yield Surface ◽

Strain Path ◽

Biaxial Tension ◽

Kinematic Hardening ◽

Surface Evolution ◽

Strain Path Change

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Investigation of the Deformation Twins on the Bending Cross Section of TA2 Titanium Sheet

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.837.41 ◽

2020 ◽

Vol 837 ◽

pp. 41-45

Author(s):

Shuai Sun ◽

Kai Hua Liu

Keyword(s):

Electron Backscatter Diffraction ◽

Testing Machine ◽

Pure Titanium ◽

Titanium Sheet ◽

Bending Tests ◽

Three Point Bending ◽

Deformation Twins ◽

Ebsd Technique ◽

Backscatter Diffraction ◽

Deformation Area

In order to determine the evolution features of deformation twins for TA2 commercial pure titanium (cp-TA2), the TA2 samples were bent under different bending angles in three-point bending tests via a universal testing machine. The electron backscatter diffraction (EBSD) technique was applied to identify the grain boundaries (GBs) and twin boundaries (TBs) in the bending areas. The results reveal that the type of deformation area would effect the evolution of different deformation twins. It is inferred that the state of stress would promote the multiplication of the same type of deformation twins.

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