Surface characteristics of aluminum 6061-T6 subjected to Nd:YAG pulsed-laser irradiation

Sungho Choi; Chung Seok Kim; Kyung Young Jhang; Wan Soon Shin

doi:10.1007/s12206-012-0537-x

Surface characteristics of aluminum 6061-T6 subjected to Nd:YAG pulsed-laser irradiation

Sungho Choi, Chung Seok Kim, Kyung Young Jhang, Wan Soon Shin

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The objective of this study was to investigate the surface characteristics of an aluminum 6061-T6 alloy subjected to Nd:YAG pulsed-laser irradiation. The test specimens were prepared by a mechanical polishing process using diamond paste and emery polishing paper to obtain different levels of initial surface roughness. After ten pulsed-laser shots, the surface morphology was observed via optical microscopy (OM) and scanning electron microscopy (SEM). Nano-indentation hardness testing was also conducted on the irradiated surface. The diameter of the melted zone increased with surface roughness because of the multiple reflection and absorption of the laser beam. The relative absorbance was measured as a function of the diameter of the melted zone with varied surface roughness.

Original language	English (US)
Pages (from-to)	2163-2166
Number of pages	4
Journal	Journal of Mechanical Science and Technology
Volume	26
Issue number	7
DOIs	https://doi.org/10.1007/s12206-012-0537-x
State	Published - Jul 2012

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering

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title = "Surface characteristics of aluminum 6061-T6 subjected to Nd:YAG pulsed-laser irradiation",

abstract = "The objective of this study was to investigate the surface characteristics of an aluminum 6061-T6 alloy subjected to Nd:YAG pulsed-laser irradiation. The test specimens were prepared by a mechanical polishing process using diamond paste and emery polishing paper to obtain different levels of initial surface roughness. After ten pulsed-laser shots, the surface morphology was observed via optical microscopy (OM) and scanning electron microscopy (SEM). Nano-indentation hardness testing was also conducted on the irradiated surface. The diameter of the melted zone increased with surface roughness because of the multiple reflection and absorption of the laser beam. The relative absorbance was measured as a function of the diameter of the melted zone with varied surface roughness.",

author = "Sungho Choi and Kim, {Chung Seok} and Jhang, {Kyung Young} and Shin, {Wan Soon}",

note = "Funding Information: This work was supported by the Research fund of Survivability Technology Defense Research Center of Agency for Defense Development of Korea (No. UD090090GD).",

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AU - Choi, Sungho

AU - Kim, Chung Seok

AU - Jhang, Kyung Young

AU - Shin, Wan Soon

N1 - Funding Information: This work was supported by the Research fund of Survivability Technology Defense Research Center of Agency for Defense Development of Korea (No. UD090090GD).

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AB - The objective of this study was to investigate the surface characteristics of an aluminum 6061-T6 alloy subjected to Nd:YAG pulsed-laser irradiation. The test specimens were prepared by a mechanical polishing process using diamond paste and emery polishing paper to obtain different levels of initial surface roughness. After ten pulsed-laser shots, the surface morphology was observed via optical microscopy (OM) and scanning electron microscopy (SEM). Nano-indentation hardness testing was also conducted on the irradiated surface. The diameter of the melted zone increased with surface roughness because of the multiple reflection and absorption of the laser beam. The relative absorbance was measured as a function of the diameter of the melted zone with varied surface roughness.

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Surface characteristics of aluminum 6061-T6 subjected to Nd:YAG pulsed-laser irradiation

Abstract

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