Rotational Echo Double Resonance Detection of Cross-links Formed in Mussel Byssus under High-Flow Stress

The mechanical response of a hot rolled polycrystalline AZ31B Mg plate along its two directions is predicted using a visco-plastic self-consistent (VPSC) model coupled with a dislocation-based hardening scheme. The hardening response along the in-plane and through thickness directions of the plate was successfully predicted in tension and compression. The high flow stress anisotropy and tension/compression asymmetry of the alloy is attributed mainly to the directionality of the tensile twinning. The high hardening rate after twinning is also predicted successfully using the above mentioned hardening scheme.

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Analysis of high flow stress and microstructural evolution of TC6 titanium alloy during isothermal forging

Materials Science and Technology ◽

10.1179/026708304x6095 ◽

2004 ◽

Vol 20 (10) ◽

pp. 1257-1260 ◽

Cited By ~ 3

Author(s):

A.-M. Xiong ◽

M.-Q. Li ◽

W.-C. Huang ◽

S.-H. Chen ◽

H. Lin

Keyword(s):

Titanium Alloy ◽

Flow Stress ◽

Microstructural Evolution ◽

High Flow ◽

Isothermal Forging ◽

High Flow Stress

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Plasticity of Cu nanoparticles: Dislocation-dendrite-induced strain hardening and a limit for displacive plasticity

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.4.17 ◽

2013 ◽

Vol 4 ◽

pp. 173-179 ◽

Cited By ~ 8

Author(s):

Antti Tolvanen ◽

Karsten Albe

Keyword(s):

Molecular Dynamics ◽

Flow Stress ◽

Solid State ◽

Force Field ◽

Strain Hardening ◽

High Flow ◽

Cu Nanoparticles ◽

Partial Dislocations ◽

High Flow Stress ◽

Dynamics Simulations

The plastic behaviour of individual Cu crystallites under nanoextrusion is studied by molecular dynamics simulations. Single-crystal Cu fcc nanoparticles are embedded in a spherical force field mimicking the effect of a contracting carbon shell, inducing pressure on the system in the range of gigapascals. The material is extruded from a hole of 1.1–1.6 nm radius under athermal conditions. Simultaneous nucleation of partial dislocations at the extrusion orifice leads to the formation of dislocation dendrites in the particle causing strain hardening and high flow stress of the material. As the extrusion orifice radius is reduced below 1.3 Å we observe a transition from displacive plasticity to solid-state amorphisation.

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Hot Stamping of Titanium Alloy Sheets into U Shape with Concave Bottom and Joggle Using Resistance Heating

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.716.915 ◽

2016 ◽

Vol 716 ◽

pp. 915-922 ◽

Cited By ~ 5

Author(s):

Tomoyoshi Maeno ◽

Yuya Yamashita ◽

Ken-Ichiro Mori

Keyword(s):

Titanium Alloy ◽

Flow Stress ◽

Partial Resistance ◽

Hot Stamping ◽

Alloy Sheet ◽

High Flow ◽

Resistance Heating ◽

High Flow Stress ◽

Reduction In Area

The hot stamping of α+β titanium alloy sheet into U shape with concave bottom using resistance heating were performed. Since both edges of the sheet in contact with a pair of electrodes were not heated, cracks occurred around the corners of the bottom due to the partially high flow stress. The cracks were prevented by slitting both edges before resistance heating because of the elongation of the edges. In addition, the hot stamping of titanium alloy sheet into joggle using partial resistance heating were performed. The distortion of sheet was reduced by reduction in area of resistance heating

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