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Research of laser shock peening on tungsten
Authors
乔红超
杨灏
赵吉宾
陆莹
Publication date
1 January 2014
Publisher
Abstract
利用激光冲击强化技术,对金属钨进行改性处理,研究了不同方法条件下,材料显微硬度的变化情况,得到了最佳的冲击参数。结果表明,激光冲击区域会发生晶粒的滑移,并产生高密度的位错,经过多次激光的反复冲击使材料内晶粒细化,并且产生新的晶界。当激光输出能量为7 J、脉宽为12 ns、冲击3次,显微硬度的提升相对显著,当冲击次数增加,显微硬度有进一步增加的趋势。在相同实验环境和条件下,当冲击4次时,试样达到最优的显微硬度,但是冲击达到6次时,可见明显裂纹
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Shenyang Institute of Automation,Chinese Academy Of Sciences
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Last time updated on 12/02/2018