Adiabatic Shear Band Localizations in BCC Metals at High Strain Rates and Various Initial Temperatures

2007 ◽  
Vol 5 (3-4) ◽  
pp. 325-349 ◽  
Author(s):  
Farid H. Abed ◽  
George Z. Voyiadjis
Keyword(s):  
Shear Band ◽  
High Strain ◽  
Adiabatic Shear Band ◽  
Adiabatic Shear ◽  
Strain Rates ◽  
High Strain Rates ◽  
Bcc Metals

Inspection of Adiabatic Shear Bands in High Manganese TRIP Steels

2013 ◽  
Vol 753 ◽  
pp. 72-75 ◽  
Author(s):  
Hui Zhen Wang ◽  
Xiu Rong Sun ◽  
Ping Yang ◽  
Wei Min Mao
Keyword(s):  
Shear Failure ◽  
High Strain ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
Strain Rates ◽  
Trip Effect ◽  
Adiabatic Shear Bands ◽  
High Manganese ◽  
High Strain Rates ◽  
Trip Steels

Adiabatic shear bands (ASBs) develop generally during high strain rates. This paper investigates the transformation induced plasticity (TRIP) effect during ASBs formation at high strain rates in high manganese TRIP steels containing initial austenite and ferrite by EBSD technique. Results show that TRIP effect takes place mainly before the formation of ASBs. After ASBs formation, TRIP effect is strongly restricted by the size effect, the increase of stacking fault energy (SFE) and even inverse martensitic transformation due to the rise of temperature. The TRIP effect before ASBs formation contributes to the resistance of adiabatic shear failure. Dynamic recrystallization driven by subgrains rotation occurs within ASBs, and ultrafine grains often show strong shear textures with twin relationship owing to slip mechanism.

Deformation Behavior of Ti-6Al-4V-0.1B Alloy Loaded under High Strain Rates

2016 ◽  
Vol 849 ◽  
pp. 266-270 ◽  
Author(s):  
Yang Yu ◽  
Qi Gao ◽  
Xun Jun Mi ◽  
Song Xiao Hui ◽  
Wen Jun Ye
Keyword(s):  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
Strain Rates ◽  
Hopkinson Pressure Bar ◽  
High Strain Rates ◽  
The Matrix ◽  
Split Hopkinson ◽  
Pressure Bar

Deformation and fracture behaviors of Ti-6Al-4V-0.1B alloy with Widmanstätten, equiaxed and bimodal microstructures were investigated by Split Hopkinson Pressure Bar (SHPB) under high strain rates of 2100-3200 s-1. The results showed that the equiaxed and bimodal structures had a higher bearing capacity at high strain rates than that of the Widmanstätten structure. With the same microstructure, the increase of strain rate gave rise to an improved uniform plastic deformation. According to an observation on the deformed microstructure, it was found that adiabatic shear behavior was the main reason for failure and fracture of the alloy. The formation and propagation of adiabatic shear bands (ASBs) was the precursor for the failure and fracture of the material. Cavities at the interface between TiB phase and the matrix readily formed due to the uncoordinated deformation, which are not the dominate reason for the failure and fracture.

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

On critical conditions for shear band formation at high strain rates

1984 ◽  
Vol 18 (5) ◽  
pp. 443-448 ◽  
Author(s):  
R.J. Clifton ◽  
J. Duffy ◽  
K.A. Hartley ◽  
T.G. Shawki
Keyword(s):  
Shear Band ◽  
High Strain ◽  
Critical Conditions ◽  
Strain Rates ◽  
Shear Band Formation ◽  
High Strain Rates ◽  
Band Formation
Sign in / Sign up

Export Citation Format

Share Document