Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion

Andreas Wimmer; Maja Lehmann; Adrian Schuler; Michael F. Zaeh

doi:10.1016/j.procir.2020.09.034

Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion

Andreas Wimmer, Maja Lehmann, Adrian Schuler, Michael F. Zaeh

Chair of Machine Tools and Manufacturing Technology

Technical University of Munich

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

The characteristics of the process zone during Laser Powder Bed Fusion (LPBF) are decisive for the quality of additively manufactured parts. Thermographic measurements give an insight into the temperatures of the melt pool and its surroundings. Particularities in the temperature field can be attributed to the process dynamics or the alteration of the alloy composition during LPBF. This study presents a method for the analysis of the phase transformation during the process. It is demonstrated that thermographic measurements allow a detailed investigation of the liquidus and the solidus temperature. Experiments with AlSi10Mg revealed a direct interaction between the energy input and the resulting constitutional undercooling. Based on this finding, process parameters can be adjusted during LPBF to control the phase transformation process of the alloy.

Original language	English
Pages (from-to)	177-181
Number of pages	5
Journal	Procedia CIRP
Volume	94
DOIs	https://doi.org/10.1016/j.procir.2020.09.034
State	Published - 2020
Event	11th CIRP Conference on Photonic Technologies, LANE 2020 - Virtual, Online Duration: 7 Sep 2020 → 10 Sep 2020

Keywords

Cooling Curve
Laser Powder Bed Fusion
Phase Transformation
Thermography
Undercooling

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10.1016/j.procir.2020.09.034

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title = "Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion",

abstract = "The characteristics of the process zone during Laser Powder Bed Fusion (LPBF) are decisive for the quality of additively manufactured parts. Thermographic measurements give an insight into the temperatures of the melt pool and its surroundings. Particularities in the temperature field can be attributed to the process dynamics or the alteration of the alloy composition during LPBF. This study presents a method for the analysis of the phase transformation during the process. It is demonstrated that thermographic measurements allow a detailed investigation of the liquidus and the solidus temperature. Experiments with AlSi10Mg revealed a direct interaction between the energy input and the resulting constitutional undercooling. Based on this finding, process parameters can be adjusted during LPBF to control the phase transformation process of the alloy.",

keywords = "Cooling Curve, Laser Powder Bed Fusion, Phase Transformation, Thermography, Undercooling",

author = "Andreas Wimmer and Maja Lehmann and Adrian Schuler and Zaeh, {Michael F.}",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors. Published by Elsevier B.V.; 11th CIRP Conference on Photonic Technologies, LANE 2020 ; Conference date: 07-09-2020 Through 10-09-2020",

year = "2020",

doi = "10.1016/j.procir.2020.09.034",

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journal = "Procedia CIRP",

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T1 - Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion

AU - Wimmer, Andreas

AU - Lehmann, Maja

AU - Schuler, Adrian

AU - Zaeh, Michael F.

PY - 2020

Y1 - 2020

N2 - The characteristics of the process zone during Laser Powder Bed Fusion (LPBF) are decisive for the quality of additively manufactured parts. Thermographic measurements give an insight into the temperatures of the melt pool and its surroundings. Particularities in the temperature field can be attributed to the process dynamics or the alteration of the alloy composition during LPBF. This study presents a method for the analysis of the phase transformation during the process. It is demonstrated that thermographic measurements allow a detailed investigation of the liquidus and the solidus temperature. Experiments with AlSi10Mg revealed a direct interaction between the energy input and the resulting constitutional undercooling. Based on this finding, process parameters can be adjusted during LPBF to control the phase transformation process of the alloy.

AB - The characteristics of the process zone during Laser Powder Bed Fusion (LPBF) are decisive for the quality of additively manufactured parts. Thermographic measurements give an insight into the temperatures of the melt pool and its surroundings. Particularities in the temperature field can be attributed to the process dynamics or the alteration of the alloy composition during LPBF. This study presents a method for the analysis of the phase transformation during the process. It is demonstrated that thermographic measurements allow a detailed investigation of the liquidus and the solidus temperature. Experiments with AlSi10Mg revealed a direct interaction between the energy input and the resulting constitutional undercooling. Based on this finding, process parameters can be adjusted during LPBF to control the phase transformation process of the alloy.

KW - Cooling Curve

KW - Laser Powder Bed Fusion

KW - Phase Transformation

KW - Thermography

KW - Undercooling

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U2 - 10.1016/j.procir.2020.09.034

DO - 10.1016/j.procir.2020.09.034

M3 - Conference article

AN - SCOPUS:85093361313

SN - 2212-8271

VL - 94

SP - 177

EP - 181

JO - Procedia CIRP

JF - Procedia CIRP

T2 - 11th CIRP Conference on Photonic Technologies, LANE 2020

Y2 - 7 September 2020 through 10 September 2020

ER -

Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion

Abstract

Keywords

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