Adiabatic shear is under high strain rate loading conditions of material deformation and fracture of a special mechanism, adiabatic shear band is the material or component of shear strain highly concentrated narrow area. Adiabatic shear deformation localization in a wide variety of metal suffered explosions, penetration, high-speed collision, such as high-speed cutting and abrasion during deformation, after the pre-tungsten alloy tungsten grain deformation reverse direction with the maximum shear stress direction close to the bomb target impact process in favor of adiabatic shear deformation and shear failure occurs. Therefore, to improve the performance of adiabatic shear tungsten alloy material to enhance the performance of tungsten alloy rod projectile penetration is currently one of the hotspots.
For half a century, tungsten alloy rod bomb adiabatic shear deformation studies, mainly in three aspects: first, starting from the constitutive relation tungsten alloy, establish adiabatic shear deformation localized instability model; second from microstructure, structure starting to explore the microstructural characteristics of the organization and its nucleation and micro factors grew up; third, using computer numerical simulation of the evolution of adiabatic shear band and should stand the strain and temperature fields research.
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