High strain rate compressive behaviors and adiabatic shear band localization of 3-D carbon/epoxy angle-interlock woven composites at different loading directions

2019 ◽  
Vol 211 ◽  
pp. 502-521 ◽  
Author(s):  
Junjie Zhang ◽  
Meiqi Hu ◽  
Shengkai Liu ◽  
Lei Wang ◽  
Bohong Gu ◽  
...  
Keyword(s):  
Shear Band ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
Adiabatic Shear ◽  
Woven Composites ◽  
Shear Band Localization

scholarly journals Adiabatic shear band localization in an Al–Zn–Mg–Cu alloy under high strain rate compression

2020 ◽  
Vol 9 (3) ◽  
pp. 3977-3983 ◽  
Author(s):  
Muhammad Abubaker Khan ◽  
Yangwei Wang ◽  
Ghulam Yasin ◽  
Faisal Nazeer ◽  
Abdul Malik ◽  
...  
Keyword(s):  
Shear Band ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
Adiabatic Shear ◽  
Cu Alloy ◽  
Strain Rate Compression ◽  
Shear Band Localization

Understanding of adiabatic shear band evolution during high-strain-rate deformation in high-strength armor steel

2020 ◽  
Vol 845 ◽  
pp. 155540 ◽  
Author(s):  
Min Cheol Jo ◽  
Selim Kim ◽  
Dae Woong Kim ◽  
Hyung Keun Park ◽  
Sung Suk Hong ◽  
...  
Keyword(s):  
Shear Band ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
High Strength ◽  
Adiabatic Shear ◽  
High Strain Rate Deformation ◽  
Armor Steel

Mechanisms of Grains Refining in Adiabatic Shear Band of Titanium Alloy

2012 ◽  
Vol 562-564 ◽  
pp. 312-317
Author(s):  
Kun Sun ◽  
Yuan Xu ◽  
Jin Hao Liu
Keyword(s):  
Titanium Alloy ◽  
Electron Microscope ◽  
Shear Band ◽  
Dynamic Recrystallization ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
Optical Microscope ◽  
Adiabatic Shear

Dynamic shearing high strain-rate experiments on three types of titanium alloy have been carried out by using a modified split Hopkinson bar. Microstructure and mechanism for grains refining in adiabatic shear band formed under the condition of high strain-rate were investigated by means of optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). It is shown that the mechanisms for grains refining in adiabatic shear band of titanium alloy mostly consist of three sorts. They are the mechanism of breakdown of elongated grains which due to action of dislocations,and the mechanism of rupture of twins and the mechanism of dynamic recrystallization, respectively. The mechanism of dynamic recrystallization is the universal one for grains refining in adiabatic shear band of titanium alloy. The formation of refining grains is usually a result of combined action of several sorts of mechanisms.

Effects of Impressed-Current on Sensitivity of Adiabatic Shear of TC6 Titanium Alloy

2013 ◽  
Vol 718-720 ◽  
pp. 107-111
Author(s):  
Kun Sun ◽  
Kai Hua Yue ◽  
Yuan Xu ◽  
Wen Li Xiang ◽  
Wei Zhong
Keyword(s):  
Titanium Alloy ◽  
High Strain Rate ◽  
Strain Rate ◽  
Room Temperature ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
Dynamic Compression ◽  
Adiabatic Shear ◽  
Split Hopkinson ◽  
Impressed Current

Dynamic compression test on TC6 titanium alloy samples have been done by using a split Hopkinson bar process and extra circuit under conditions of room temperature and high strain-rate. The effect of impressed-current on sensitivity of adiabatic shear of TC6 titanium alloy has been studied. It is shown that the impressed-current can reduce the sensitivity of adiabatic shear of TC6 titanium alloy under the condition of high strain-rate. Free electron in the samples will do direct move and take heat away from high localized area to decrease the effect of the heat. The result will help to delay formation of the adiabatic shear band. So, that is reducing the sensitivity of adiabatic shear of TC6 titanium alloy.

scholarly journals Dynamic Mechanical Properties and Microstructure of an (Al0.5CoCrFeNi)0.95Mo0.025C0.025 High Entropy Alloy

Entropy ◽  
2019 ◽  
Vol 21 (12) ◽  
pp. 1154
Author(s):  
Bingfeng Wang ◽  
Chu Wang ◽  
Bin Liu ◽  
Xiaoyong Zhang
Keyword(s):  
Mechanical Properties ◽  
Shear Band ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Dynamic Mechanical Properties ◽  
High Entropy Alloy ◽  
Face Centered Cubic ◽  
High Entropy ◽  
Dynamic Mechanical

The dynamic mechanical properties and microstructure of the (Al0.5CoCrFeNi)0.95Mo0.025C0.025 high entropy alloy (HEA) prepared by powder extrusion were investigated by a split Hopkinson pressure bar and electron probe microanalyzer and scanning electron microscope. The (Al0.5CoCrFeNi)0.95Mo0.025C0.025 HEA has a uniform face-centered cubic plus body-centered cubic solid solution structure and a fine grain-sized microstructure with a size of about 2 microns. The HEA possesses an excellent strain hardening rate and high strain rate sensitivity at a high strain rate. The Johnson–Cook plastic model was used to describe the dynamic flow behavior. Hat-shaped specimens with different nominal strain levels were used to investigate forced shear localization. After dynamic deformation, a thin and short shear band was generated in the designed shear zone and then the specimen quickly fractured along the shear band.

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