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题名: Study and development of high peak power short pulse Nd:YAG laser for peening applications
作者: Qiao HC(乔红超); Zhao JB(赵吉宾); Yang H(杨灏)
作者部门: 装备制造技术研究室
关键词: YAG laser ; laser beam ; peak power ; laser peening
刊名: Science China Technological Sciences
ISSN号: 1674-7321
出版日期: 2015
卷号: 58, 期号:7, 页码:1154–1161
收录类别: SCI ; EI ; CSCD
产权排序: 1
项目资助者: National Hi-Tech Research and DevelopmentProgram of China (“863” Project) (Grant No. 2012AA041310)
摘要: Because short pulse Nd:YAG laser of nanosecond pulse-width and high peak power has a unique capability to improve the mechanical properties of metal parts, a study on the development of high peak power short pulse from Nd:YAG laser along with its peening application has been performed. The design scheme of laser and the characteristic of laser beam transmission are presented and discussed. A pulse energy of 25 J with 15 ns pulse-width and a maximum peak power of 1660 kW laser system which use one oscillation and eight amplifiers has been achieved. Laser beam has a max divergence angle of 0.03 mrad, a pulse-to-pulse pulse-width stability of ±0.1 ns, and the pulse-to-pulse energy stability factors of less than ±2.8%. A low value of divergence means an easier modification of a nearly hat-top laser beam intensity profile and an easier transmission of laser beam. To evaluate the performance of the laser system, several metal materials are processed. Laser peening quality and efficiency are analyzed by using an optical microscope, a transmission electron microscope, and an X-ray diffraction device. The processing results show that the performance of this laser system is excellent.
语种: 英语
WOS记录号: WOS:000357513300004
WOS标题词: Science & Technology ; Technology
类目[WOS]: Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
关键词[WOS]: ND-GLASS LASER ; MECHANICAL-PROPERTIES ; TITANIUM-ALLOY ; YAG LASER ; SHOCK ; FATIGUE ; MICROSTRUCTURE ; STEEL ; SYSTEM
研究领域[WOS]: Engineering ; Materials Science
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/16463
Appears in Collections:装备制造技术研究室_期刊论文

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