Femtosecond laser machining characteristics in a single-crystal superalloy

被引：16

作者：

Zhang Wei ^{[1
,2
]}

Cheng Guanghua ^{[2
]}

Feng Qiang ^{[1
,3
]}

Cao Lamei ^{[4
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

[3] Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China

[4] Beijing Inst Aeronaut Mat, Natl Key Lab Sci & Technol Adv High Temp Struct M, Beijing 100095, Peoples R China

来源：

RARE METALS | 2011年 / 30卷

关键词：

femtosecond laser; nanosecond laser; machining; threshold; single-crystal superalloy; ABLATION; PICOSECOND; SURFACES; SILICON; PULSES; DAMAGE; FILMS;

D O I：

10.1007/s12598-011-0362-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Femtosecond laser machining characteristics of a nickel-base single-crystal superalloy were investigated as a function of laser fluence and the number of laser pulses. The significant decrease of recast layer for femtosecond laser machining was observed compared with that for nanosecond laser machining. The ablation thresholds for 1, 10, and 100 femtosecond pulse exposure were measured. Two ablation regions of the ablated crater were observed. The change of the ablation diameter and depth depended on the laser fluence and the number of laser pulses. And higher laser fluence could enable a faster rate of laser-machining.

引用

页码：639 / 642

页数：4

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