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研究了在爆炸复合冲击载荷下工业纯钛和低碳钢(TA2/A3)爆炸复合界面层附近TA2侧出现的绝热剪切带(ASB)内的显微组织,表明其ASB内具有等轴微晶组织特征并未发现微裂纹,ASB内的显微硬度比附近基体略高,对仅在TA2侧产生ASB,而在A3侧从未观察到.这一现象从材料-力学-热学上进行了综合分析讨论.结果表明:应变丰和应变都影响绝热剪切过程;在爆炸复合冲击载荷这一近似绝热条件下,材料本身的物理性能(如比定容热容cv,密度p等)、刀学性能(如导热系数k)都影响ASB产生的倾向性.
The microstructures in the adiabatic shear band (ASB) appearing on the TA2 near the detonation interface of industrial pure titanium and low carbon steel (TA2 / A3) under explosive combined impact loading were studied. The results show that the ASB has equiaxed micro No evidence of microcracking was observed in the microstructure of the crystal, with slightly higher microhardness in the ASB than in the surrounding matrix, ASB only on the TA2 side and never on the A3 side. This phenomenon from the material - mechanics - thermal analysis conducted a comprehensive discussion. The results show that both strain abundance and strain affect the adiabatic shear process. Under the approximate adiabatic condition of explosive impact load, the physical properties (such as specific heat capacity cv and density p) Thermal conductivity k) affects the propensity of ASB.