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利用强流脉冲电子束装置在各种工艺条件下对奥氏体不锈钢、单晶铝及多晶铝等面心立方金属进行辐照处理.利用扫描电子显微镜和透射电子显微镜等详细分析了辐照样品的变形组织与结构.通过分析,在一定程度上建立起强流脉冲电子束诱发的应力特征与变形结构之间的关系,并对目前现有的几种应力波数值模拟结果进行了分析.实验结果表明,强流脉冲电子束能够在材料内部诱发102—103MPa的应力,其传播方式与材料的晶体结构关系密切.这一应力是导致材料深层性能与微观组织结构发生变化的根源所在.
High intensity pulsed electron beam was used to irradiate face centered cubic metal, such as austenitic stainless steel, monocrystalline aluminum and polycrystalline aluminum, under various technological conditions.The effects of irradiation Through the analysis, the relationship between the stress characteristics induced by the intense pulsed electron beam and the deformation structure is established to some extent and the numerical simulation results of several existing stress waves are analyzed. The experimental results show that the intense pulsed electron beam can induce a stress of 102-103MPa within the material and the propagation mode is closely related to the crystal structure of the material, which is the source of the changes in the deep properties and the microstructure of the material.