The plastic deformation behaviour of AISI 4340 alloy steel subjected to high temperature and high strain rate loading conditions

1997 ◽  
Vol 71 (2) ◽  
pp. 224-234 ◽  
Author(s):  
Woei-Shyan Lee ◽  
Gen-Wang Yeh
Keyword(s):  
Plastic Deformation ◽  
High Temperature ◽  
High Strain Rate ◽  
Strain Rate ◽  
Alloy Steel ◽  
High Strain ◽  
Deformation Behaviour ◽  
Loading Conditions ◽  
Strain Rate Loading ◽  
Aisi 4340

scholarly journals A New Set-Up to Investigate Plastic Deformation of Face Centered Cubic Metals in High Strain Rate Loading

2014 ◽  
Vol 8 (2) ◽  
Author(s):  
Ehsan Etemadi ◽  
Jamal Zamani ◽  
Alessandro Francesconi ◽  
Mohammad V. Mousavi ◽  
Cinzia Giacomuzzo
Keyword(s):  
Plastic Deformation ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Face Centered Cubic ◽  
Cubic Metals ◽  
Face Centered ◽  
Set Up ◽  
Strain Rate Loading

Effect of Precipitates on Plastic Deformation Behavior of High Entropy Alloy Al0.3CoCrFeNi Under High Strain Rate Loading

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Prasanta K. Das ◽  
Vishal Kumar ◽  
Prasenjit Khanikar
Keyword(s):  
Plastic Deformation ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Microstructural Analysis ◽  
Dynamics Simulation ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Plastic Deformation Behavior ◽  
Strain Rate Loading

Abstract High entropy alloys (HEAs) are primarily known for their high strength and high thermal stability. These alloys have recently been studied for high strain rate applications as well. HEAs have been observed to exhibit different properties when subjected to different strain rates. Very few published results on HEAs are available for high strain rate loading conditions. In addition, modeling and simulation work of microstructural details, such as grain boundary and precipitates of HEAs have not yet been investigated. However, at an atomistic length scale, molecular dynamics simulation works of HEAs have already been published. In this study, a detailed microstructural analysis of plastic deformation of the material under high strain rate loading has been performed using dislocation density based crystal plasticity finite element modeling. The primary objective is, therefore, to assess the strengthening effects due to precipitates on a particular high entropy alloy Al0.3CoCrFeNi with ultrafine grains having randomly distributed NiAl precipitates.

Microstructure Evolution of Pearlitic Lamella Impacts at Ultra-High Strain Rates

2011 ◽  
Vol 464 ◽  
pp. 619-622
Author(s):  
Yi Xiong ◽  
Tian Tian He ◽  
Fang Yu Zhang ◽  
Ling Feng Zhang ◽  
Feng Zhang Ren
Keyword(s):  
Plastic Deformation ◽  
High Strain Rate ◽  
Strain Rate ◽  
Microstructure Evolution ◽  
High Strain ◽  
Cementite Particle ◽  
Eutectoid Steel ◽  
Strain Rate Loading ◽  
Microduplex Structure ◽  
Lamellar Pearlite

The microstructure evolution of eutectoid steel with lamellar pearlite was investigated by SEM and TEM during ultra-high strain rate loading. The results indicate that ultrafine microduplex structure (ferrite + cementite) with the grain size to sub-micrometer level was observed at the surface of eutectoid steel after single pass ultra-high strain rate loading. Equiaxed ferrite grain was about 0.8 μm and the cementite lamella was spheroidized fully, and the diameter of the cementite particle was about 50 nm. The bent or fractures can occur at the edge of shock wave. Ultra-high strain rate shocking induced severe plastic deformation at the surface of materials and the cementite lamella has better plastic deformation capacity.

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