Direct measurements of temperature-dependent laser absorptivity of metal powders

Rubenchik, A.; Wu, S.; Mitchell, S.; Golosker, I.; LeBlanc, M.; Peterson, N.

doi:10.1364/AO.54.007230

Title: Direct measurements of temperature-dependent laser absorptivity of metal powders

Journal Article · Wed Aug 12 00:00:00 EDT 2015 · Applied Optics

DOI:https://doi.org/10.1364/AO.54.007230· OSTI ID:1234592

Rubenchik, A. ^[1]; Wu, S. ^[1]; Mitchell, S. ^[1]; Golosker, I. ^[1]; LeBlanc, M. ^[1]; Peterson, N. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Here, a compact system is developed to measure laser absorptivity for a variety of powder materials (metals, ceramics, etc.) with different powder size distributions and thicknesses. The measured results for several metal powders are presented. The results are consistent with those from ray tracing calculations.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1234592

Alternate ID(s):: OSTI ID: 1222253

Report Number(s):: LLNL-JRNL-669601; APOPAI

Journal Information:: Applied Optics, Vol. 54, Issue 24; ISSN 0003-6935

Publisher:: Optical Society of America (OSA)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 61 works

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References (9)

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Numerical and experimental analysis of heat distribution in the laser powder bed fusion of Ti-6Al-4V Karayagiz, Kubra; Elwany, Alaa; Tapia, Gustavo IISE Transactions, Vol. 51, Issue 2 https://doi.org/10.1080/24725854.2018.1461964	journal	June 2018
Powder Bed Layer Characteristics: The Overseen First-Order Process Input Mindt, H. W.; Megahed, M.; Lavery, N. P. Metallurgical and Materials Transactions A, Vol. 47, Issue 8 https://doi.org/10.1007/s11661-016-3470-2	journal	April 2016
Laser powder bed fusion additive manufacturing of metals; physics, computational, and materials challenges King, W. E.; Anderson, A. T.; Ferencz, R. M. Applied Physics Reviews, Vol. 2, Issue 4 https://doi.org/10.1063/1.4937809	journal	December 2015
A Review of Model Inaccuracy and Parameter Uncertainty in Laser Powder Bed Fusion Models and Simulations Moges, Tesfaye; Ameta, Gaurav; Witherell, Paul Journal of Manufacturing Science and Engineering, Vol. 141, Issue 4 https://doi.org/10.1115/1.4042789	journal	February 2019
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