Improvement of deformation behavior of tube in electromagnetic forming with a triple-coil system

2019 ◽  
Vol 61 (2) ◽  
pp. 263-272 ◽  
Author(s):  
Xiao Zhang ◽  
Changxing Li ◽  
Xiaoguang Wang ◽  
Yun Zhao ◽  
Liang Li
Keyword(s):  
Deformation Behavior ◽  
Electromagnetic Forming ◽  
Coil System

The effect of coil polarity on electromagnetic forming using a multi-coil system

2019 ◽  
Vol 103 (1-4) ◽  
pp. 1555-1566 ◽  
Author(s):  
Zhipeng Lai ◽  
Quanliang Cao ◽  
Meng Chen ◽  
Ning Liu ◽  
Xiaoxiang Li ◽  
...  
Keyword(s):  
Electromagnetic Forming ◽  
Coil System

Application of Triple-Coil System for Improving Deformation Depth of Tube in Electromagnetic Forming

2016 ◽  
Vol 26 (4) ◽  
pp. 1-4 ◽  
Author(s):  
Xiao Zhang ◽  
Quanliang Cao ◽  
Xiaotao Han ◽  
Qi Chen ◽  
Zhipeng Lai ◽  
...  
Keyword(s):  
Electromagnetic Forming ◽  
Coil System

Deformation behavior of tube in electromagnetic forming with an external die

2018 ◽  
Vol 57 (4) ◽  
pp. 377-388
Author(s):  
Xiao Zhang ◽  
Quanliang Cao ◽  
Xiaoxiang Li ◽  
Lei Yi ◽  
Jimin Ma ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Electromagnetic Forming

Plastic deformation of θ ' in Al-4%Cu alloy

1978 ◽  
Vol 36 (1) ◽  
pp. 576-577
Author(s):  
Shrikant P. Bhat
Keyword(s):  
Deformation Behavior ◽  
Room Temperature ◽  
Electron Microscopic Observation ◽  
Bulk Alloy ◽  
Electron Microscopic ◽  
Cu Alloy ◽  
Cu Alloys ◽  
Orowan Mechanism ◽  
The Subject ◽  
Cyclic Straining

deformation behavior of Al-Cu alloys aged to contain θ ' has been the subject of many investigations (e.g., Ref. 1-5). Since θ ' is strong and hard, dislocations bypass θ ' plates (Orowan mechanism) at low strains. However, at high strains the partially coherent θ ' plates are probably sheared, although the mechanism is complex, depending on the form of deformation. Particularly, the cyclic straining of the bulk alloy is known to produce gross bends and twists of θ '. However, no detailed investigation of the deformation of θ ' has yet been reported; moreover, Calabrese and Laird interpreted the deformation of θ ' as largely being elastic.During an investigation of high temperature cyclic deformation, the detailed electron-microscopic observation revealed that, under reversed straining conditions, θ ' particles are severely distorted--bent and twisted depending on the local matrix constraint. A typical electronmicrograph, showing the twist is shown in Fig. 1. In order to establish whether the deformation is elastic or plastic, a sample from a specimen cycled at room temperature was heated inside the microscope and the results are presented in a series of micrographs (Fig. 2a-e).

Observation of secondary slip systems in tungsten bicrystals

1984 ◽  
Vol 42 ◽  
pp. 478-479
Author(s):  
J. R. Fekete ◽  
R. Gibala
Keyword(s):  
Stress Field ◽  
Grain Boundaries ◽  
Deformation Behavior ◽  
Stress Axis ◽  
Polycrystalline Materials ◽  
Slip Systems ◽  
Metallic Materials ◽  
Twist Boundary ◽  
Secondary Slip ◽  
Plane Normal

The deformation behavior of metallic materials is modified by the presence of grain boundaries. When polycrystalline materials are deformed, additional stresses over and above those externally imposed on the material are induced. These stresses result from the constraint of the grain boundaries on the deformation of incompatible grains. This incompatibility can be elastic or plastic in nature. One of the mechanisms by which these stresses can be relieved is the activation of secondary slip systems. Secondary slip systems have been shown to relieve elastic and plastic compatibility stresses. The deformation of tungsten bicrystals is interesting, due to the elastic isotropy of the material, which implies that the entire compatibility stress field will exist due to plastic incompatibility. The work described here shows TEM observations of the activation of secondary slip in tungsten bicrystals with a [110] twist boundary oriented with the plane normal parallel to the stress axis.

Transformation and Deformation Behavior in Sputter-Deposited Ti-Ni-Cu Thin Films

1995 ◽  
Vol 05 (C8) ◽  
pp. C8-689-C8-694 ◽  
Author(s):  
T. Hashinaga ◽  
S. Miyazaki ◽  
T. Ueki ◽  
H. Horikawa
Keyword(s):  
Thin Films ◽  
Deformation Behavior ◽  
Sputter Deposited
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