scholarly journals On the formation of adiabatic shear bands in titanium alloy Ti17 under severe loading conditions

2018 ◽  
Author(s):  
H. Ben Boubaker ◽  
Y. Ayed ◽  
C. Mareau ◽  
G. Germain
Keyword(s):  
Titanium Alloy ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
Loading Conditions ◽  
Adiabatic Shear Bands ◽  
Severe Loading

Penetration Damaging Behavior of TB17 Titanium Alloy

2020 ◽  
Vol 993 ◽  
pp. 100-107
Author(s):  
Jing Li ◽  
Yun Peng Xin ◽  
Tao Jiang ◽  
Xin Nan Wang ◽  
Zhi Shou Zhu
Keyword(s):  
Titanium Alloy ◽  
Adiabatic Shear Band ◽  
Shear Bands ◽  
High Strength ◽  
Adiabatic Shear ◽  
Adiabatic Shear Bands ◽  
Internal Wall ◽  
Micro Cracks ◽  
Opening Stage ◽  
River Pattern

The damage behavior of TB17 titanium alloy with ultra-high strength was studied by 12.7mm diameter armor piercing test. The characteristics and mechanism of damaging were analyzed by the observation of damage morphology of target board. The results indicated that the area was irregular at the opening stage, the internal wall were turtle-shell-like or poly-porous, a few cracks and no adiabatic shear band was observed. The zone was parabolic at the penetrating stage, the internal wall were granular or river pattern, adiabatic shear bands and fragments existed around the crater. A large number micro-pores and micro-cracks originating from the adiabatic shear bands expanded and formed macroscopic cracks. Finally, the target board fractured.

The structure of adiabatic shear bands in a titanium alloy

1985 ◽  
Vol 33 (4) ◽  
pp. 667-676 ◽  
Author(s):  
S.P. Timothy ◽  
I.M. Hutchings
Keyword(s):  
Titanium Alloy ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
Adiabatic Shear Bands

Penetration Damaging Behavior of ATI425 Titanium Alloy

2021 ◽  
Vol 1035 ◽  
pp. 39-45
Author(s):  
Jing Li ◽  
Zhi Shou Zhu ◽  
Xin Nan Wang ◽  
Tao Jiang
Keyword(s):  
Titanium Alloy ◽  
Temperature Rise ◽  
Shear Bands ◽  
Side Wall ◽  
Adiabatic Shear ◽  
Adiabatic Shear Bands ◽  
Target Plate ◽  
Alloy Target ◽  
Opening Stage ◽  
Stable Stage

The penetration damaging behavior of ATI425 titanium alloy was studied by 7.62 mm diameter armor piercing projectiles. The damage characteristics and the mechanism were analyzed by observing and analyzing the craters of ATI425 titanium alloy target. It can be found that local temperature-rise of the target plate occurred, even sputtering phenomenon in the opening stage. The shear bands extended upward along the cater wall could be seen in the stable stage. The large non-homogeneous deformation in adiabatic shear bands caused microcracks and micropores. A large number of macro-cracks were observed on the side wall and at the bottom of the crater.

Damage and Fracture Mechanism of As-Cast Ti40 Titanium Alloy during Hot Compression

2013 ◽  
Vol 750-752 ◽  
pp. 721-724 ◽  
Author(s):  
Yan Chun Zhu ◽  
Wei Dong Zeng ◽  
Yong Qing Zhao ◽  
Wen Wen Peng
Keyword(s):  
Shear Stress ◽  
Titanium Alloy ◽  
Shear Fracture ◽  
Shear Bands ◽  
Adiabatic Shear ◽  
Hot Compression ◽  
Adiabatic Shear Bands ◽  
Intergranular Cracking ◽  
Β Phase ◽  
Damage And Fracture

The damage and fracture behavior was researched in hot compression of as-cast Ti40 titanium alloy with single β phase. The main fracture modes consist of 45° shear fracture, inner cracking and longitudinal fracture on free-surface, which occur at 850°C/10s-1, 900~950°C/10s-1 and other deformation conditions respectively. Moreover, 45° transgranular cracking is the combination result of adiabatic shear bands due to local temperature rise and shear stress, the inner intergranular cracking is induced by the microvoids near the adiabatic shear bands propagted along grain boundry under shear stress, the surface longitudinal intergranular cracking is caused by the vaporization of oxide and function of hoop tensile stress. In addition, the material undergoes the complex fracture which has to be avoided or decreased in hot processing for obtaining satisfactory properties.

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