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A comparative study...
A comparative study of water and gas atomized low alloy steel powders for additive manufacturing
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- Fedina, Tatiana (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Sundqvist, Jesper, 1987- (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Powell, John (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Kaplan, Alexander F.H (author)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
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In: Additive Manufacturing. - : Elsevier. - 2214-8604 .- 2214-7810. ; 36
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- This work reports a study of the differences between laser processing of water and gas atomized low alloy steel powders with a focus on powder behavior and performance in additive manufacturing. Material packing densities were measured to establish a relationship between powder packing and track formation. The results showed that the track height when using water atomized powder was 15% lower than the value achieved for the gas atomized powder. High-speed imaging was utilized to observe the material behavior and analyze the powder particle movement under laser irradiation. It was found that water atomized powder has less particle entrainment due to its tendency towards mechanical interlocking. The occurrence of powder spattering and melt pool instabilities was also studied. More frequent spatter ejection is believed to be due to the higher amount of oxygen in the water atomized powder.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Additive manufacturing
- Laser powder bed fusion
- Water atomized powder
- Packing density
- Low alloy steel
- High-speed imaging
- Manufacturing Systems Engineering
- Produktionsutveckling
Publication and Content Type
- ref (subject category)
- art (subject category)
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