This paper describes the meso-morphology of shear surface of the fragments prduced by four kinds of metal tubes(AISI 1045 steel in normal and heat trent conditions, Ti-6A1-4V and Tungsten alloy)under internal high explosive loading,and reports different meso-mechanism of shear fracture in these metal tubes. The research has shown when the thermal conductivity of the metal is lower,and the grains of the metal is fine,it is more sensitivity to adiabat-ic shearing and would more easily produce transformed band...
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