Cumulation of a spherically converging shock wave in metals and its dependence on elastic-plastic properties, phase transitions, spall and shear fractures  

作　　者：Evgeny A.Kozlov Alexsander V.Petrovtsev 

机构地区：[1]Russian Federal Nuclear Center-Zababakhin Research Institute of Technical Physics Snezhinsk,Chelyabinsk Region,Russia

出　　处：《International Journal of Modeling, Simulation, and Scientific Computing》2015年第1期26-38,共13页建模、仿真和科学计算国际期刊（英文）

摘　　要：Consideration is given to results of experimental and theoretical investigations how alpha-epsilon phase transition in the unalloyed iron and the 30 KhGSA steel and its absence in the austenitic 12Kh18N10T stainless steel influence processes under explosive deformation of spheres made of these materials.Polymorphous transition is shown to significantly effect on:amount of explosion-products energy transferred to a sphere,evolution of the converging-wave structure and its parameters,profiles of stress wave and temperature T(R,t)for some Lagrangian particles along the sphere radius,character of energy cumulation under spherical convergence of waves.

关 键 词：Cumulation spherically converging shock wave elastic-plastic properties phase transitions spall and shear fractures 

分 类 号：TG1[金属学及工艺—金属学]