Double-pulse femtosecond laser peening of aluminum alloy AA5038: Effect of inter-pulse delay on transient optical plume emission and final surface micro-hardness

被引：17

作者：

Ageev, E. I. ^{[1
]}

Bychenkov, V. Yu. ^{[2
]}

Ionin, A. A. ^{[2
]}

Kudryashov, S. I. ^{[1
,2
]}

Petrov, A. A. ^{[1
]}

Samokhvalov, A. A. ^{[1
]}

Veiko, V. P. ^{[1
]}

机构：

[1] ITMO Univ, St Petersburg 197101, Russia

[2] Lebedev Phys Inst, Moscow 119991, Russia

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 21期

基金：

俄罗斯基础研究基金会;

关键词：

ABLATION; SILICON; FOIL;

D O I：

10.1063/1.4968594

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Double-pulse ablative femtosecond laser peening of the AA5038 aluminum alloy surface in the phase explosion regime results in its enhanced microhardness, which monotonously decreases till the initial value versus inter-pulse delay, increasing on a sub-nanosecond timescale. Optical emission spectroscopy of the double-pulse ablative plume reveals the same trend in the yield of the corresponding atomic and ion emission versus inter-pulse delay, enlightening the interaction of the second femtosecond laser pump pulse with the surface and the resulting plume. Published by AIP Publishing.

引用

页数：4

共 23 条

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