The strain rate dependent plastic flow behavior of zirconium and its alloys

1970 ◽  
Vol 1 (6) ◽  
pp. 1607-1616 ◽  
Author(s):  
D. Lee
Keyword(s):  
Strain Rate ◽  
Plastic Flow ◽  
Flow Behavior ◽  
Rate Dependent

Plastic Flow Instabilities of L12 Ni3(Si,Ti) Alloys at Intermediate Temperature

2002 ◽  
Vol 17 (3) ◽  
pp. 705-711 ◽  
Author(s):  
H. Honjo ◽  
Y. Kaneno ◽  
H. Inoue ◽  
T. Takasugi
Keyword(s):  
Strain Rate ◽  
Plastic Flow ◽  
Flow Behavior ◽  
Rate Sensitivity ◽  
Tensile Tests ◽  
Lattice Diffusion ◽  
Intermediate Temperature ◽  
Fine Grained ◽  
Ti Alloys ◽  
Temperature Strain

The serrated plastic flow of L12 Ni3 (Si,Ti) alloys at intermediate temperature was investigated by tensile tests in terms of the effects of temperature, strain rate, composition, and microstructure. Serrated plastic flow was most strongly observed at 473 K and at a strain rate of 1.6 × 10–4 s–1. Correspondingly, the maximum stress amplitude and the lowest (negative) strain-rate sensitivity were observed at 473 K. Serrated plastic flow took place irrespective of boron doping and was more significant in a fine-grained Ni3 (Si,Ti) alloy. The static aging at 473 K resulted in reduced flow stress. The activation energy for serrated plastic flow was estimated to be about 57 kJ mol–1, suggestive of being smaller than that for lattice diffusion of solutes. The serrated plastic flow behavior of Ni3 (Si,Ti) alloys was compared with that of L12 Co3Ti alloys, and is qualitatively explained on the basis of the dynamics of solutes in the core of a dissociated screw dislocation.

scholarly journals Research on the Dynamic Compressive Deformation Behavior of 3D-Printed Ti6Al4V

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1327
Author(s):  
Bo Pu ◽  
Wenbin Li ◽  
Qing Zhang ◽  
Yu Zheng ◽  
Xiaoming Wang
Keyword(s):  
Constitutive Model ◽  
Strain Rate ◽  
Plastic Flow ◽  
Deformation Behavior ◽  
Flow Behavior ◽  
Compressive Deformation ◽  
Material Strength ◽  
Plastic Deformation Behavior ◽  
3D Printed ◽  
Printing Direction

In this paper, the plastic flow and fracture behavior of 3D-printed Ti6Al4V (TC-4) alloy under different temperatures (289–1073 K) and strain rates (0.1–4100 s−1) were studied by using the MTS comprehensive experimental machine (MTS) and split Hopkinson pressure bar (SHPB) equipment. The patterns of the influence of temperature and strain rate on the plastic flow behavior of 3D-printed materials in different printing directions were analyzed and compared with those of the traditional TC-4. Based on the experimental data, the modified Johnson–Cook (J-C) constitutive model of 3D-printed TC-4 alloy was established, and the plastic deformation behavior of the material driven by detonation was studied by X-ray photography. The research results showed that under static loading conditions, the strength of the material (AM-P-TC-4) along the printing direction was much higher than the strength of the material perpendicular to the printing direction (AM-T-TC-4). However, there was no difference in material strength for different directions under dynamic loading. Second, under the same deformation conditions, the strength of the 3D-printed TC-4 alloy was considerably higher than that of the traditional TC-4 alloy, but adiabatic shear fracture could be more easily induced under dynamic compressive deformation conditions for the 3D-printed TC-4 alloy, and its fracture strain was substantially less than that of TC-4 alloys. The modified J-C constitutive model established in this paper could better describe the plastic flow behavior of the AM-P-TC-4 alloy under high temperature and high-strain rate deformation conditions.

Plastic flow behavior of 7017 and 7055 aluminum alloys under different high strain rate test methods

2014 ◽  
Vol 612 ◽  
pp. 343-353 ◽  
Author(s):  
Bidyapati Mishra ◽  
Chandan Mondal ◽  
Rajnish Goyal ◽  
Partha Ghosal ◽  
K. Siva Kumar ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
High Strain Rate ◽  
Strain Rate ◽  
Plastic Flow ◽  
High Strain ◽  
Flow Behavior ◽  
Test Methods ◽  
Rate Test ◽  
High Strain Rate Test

Strain-rate dependent material properties of selective laser melted AlSi10Mg and AlSi3.5Mg2.5

2020 ◽  
Vol 62 (6) ◽  
pp. 573-583
Author(s):  
Andreas Lutz ◽  
Lukas Huber ◽  
Claus Emmelmann
Keyword(s):  
Strain Rate ◽  
Material Properties ◽  
Rate Dependent
Sign in / Sign up

Export Citation Format

Share Document