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讨论了纳秒强脉冲电子束 (功率密度为 1 0 9W/cm2 )辐射金属表面后产生的强化作用 .纳秒脉冲电子束瞬间在材料表面局部区域注入巨大能量 ,使金属表面微区瞬间产生高温高压和冲击作用 ,并产生骤热急冷过程 ,使材料表面硬度、耐腐蚀性和其他物化性能发生明显变化 .文中讨论了脉冲电子束导致快速熔凝的热传导过程 ,并分析了从扫描电镜照片观察到的金属急冷过程的显微结构 .纳秒强脉冲电子束注入是金属材料表面改性的新手段
The strengthening effect of nanosecond pulsed electron beam (power density of 109 W / cm2) on the metal surface is discussed.The nanosecond pulsed electron beam instantly injects huge energy into the local area of the material surface to make the metal surface area instantaneously generate high temperature High pressure and impact, and the rapid quenching and quenching process, the material surface hardness, corrosion resistance and other physicochemical properties of significant changes.This paper discusses the fast electron beam induced by pulsed heat conduction process, and analyzed from the scanning electron micrograph To the metal microstructure of the quenching process. Nanosecond pulsed electron beam injection is a new means of surface modification of metallic materials