| 激光冲击在LY12CZ中形成冲击波的研究 |
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| 引用本文： | 戴蜀 安承武. 激光冲击在LY12CZ中形成冲击波的研究[J]. 激光技术, 1997, 21(6): 330-333 |
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| 作者姓名： | 戴蜀 安承武 |
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| 作者单位： | 1.华中理工大学塑性成型及模具技术国家重点实验室; |
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| 摘 要： | 应用EMG201MSC准分子激光器通过石英压力传感器和2440瞬态存贮示波器并采用两种方式(瞬态存贮法和滚动法)测定了激光冲击LY12CZ中产生的冲击波.激光器的波长为1.06μm,脉宽为28ns,输出功率密度为1.06×108W/cm2.按照压电转化原理,计算出LY12CZ中形成的瞬态冲击波的量值处于MPa级,并分析和计算了冲击波的衰减方程.
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| 关 键 词： | 冲击波 功率密度 衰减方程 |
| 收稿时间： | 1996-05-19 |
| 修稿时间： | 1997-04-16 |
Study on shock wave resulted from laser pulse shocking on surface LY12CZ |
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| Dai Shujuan,Liu Furong,Yang Xiao,Zou Hongcheng,An Chengwu,Lu Dongsheng. Study on shock wave resulted from laser pulse shocking on surface LY12CZ[J]. Laser Technology, 1997, 21(6): 330-333 |
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| Authors: | Dai Shujuan Liu Furong Yang Xiao Zou Hongcheng An Chengwu Lu Dongsheng |
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| Abstract: | When a laser beam irradiates to the surface on a metal,the instantaneous energy accumulation makes a great number of metal atoms vapourous and form a shock wave propagating to the inner of materials.These reactions makes the microstructure and the propreties of the materials improved.In order to experimentally research the shock wave,the system composed of a quartz pressure transducer and a EMG201MSC excimer laser operating at 1060nm,pulse width 28ns,power density 1.06×108W/cm2,is designed to measure the laser shock wave on the surface of LY12CZ aluminum alloy,using instantaneous storage method and rolling method with a 2440 instantaneous storage oscilloscope.The experimental results show that the pressure of laser shock wave is MPa order.Finally,the attenuating equation of laser shock wave has the expression of P =13.4t-0.099,here the unit of P and t is MPa and ns respectively. |
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| Keywords: | shock wave powder density attenuating equation |
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