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Material Properties of Laser Powder Bed Fusion Processed 316L Stainless Steel.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Material Properties of Laser Powder Bed Fusion Processed 316L Stainless Steel./
Author:	Keckler, Steven.
Description:	1 online resource (92 pages)
Notes:	Source: Masters Abstracts International, Volume: 80-03.
Contained By:	Masters Abstracts International80-03.
Subject:	Engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780438304956

Material Properties of Laser Powder Bed Fusion Processed 316L Stainless Steel.
Keckler, Steven.

Material Properties of Laser Powder Bed Fusion Processed 316L Stainless Steel. - 1 online resource (92 pages)

Source: Masters Abstracts International, Volume: 80-03.

Thesis (M.S.)--Montana Tech of The University of Montana, 2018.

Includes bibliographical references

Laser powder bed fusion additive manufactured 316L stainless steel specimens were evaluated to establish a baseline for future research in determining an optimized energy density and build orientation. Test specimens were printed at various energy densities. At each energy density, tensile and fatigue specimens were printed at 0° (longitudinal), 45°, and 90° (transverse) orientation to the build plate. Tensile and high cycle fatigue tests were performed then representative fracture surfaces were analyzed. The apparent melt track and dendrite size were evaluated using grain analysis software. Static loading of the tensile specimens showed a marginal difference in UTS for specimens with a longitudinal and 45° orientation to the build plate. The transverse orientation was more variable due to the UTS response to the quality of fusion between melt track layers. The energy density affected the fatigue as well. Typically, the medium energy density had the most consistent behavior. Fractography revealed a relationship between energy density and melt track fusion. The optimum energy density in this study was determined to be 100 J/mm 3, based on the highest transverse UTS, highest fatigue limit, moderate ductility, and moderate volume of lack of fusion defects. Specimens fabricated at a lower energy density had insufficient heat input to achieve good fusion which reduced the transverse UTS, ductility, and fatigue limit. The highest energy density was excessive energy density leading to an increase in defects reducing the transverse UTS and fatigue limit. The UTS was not strongly affected by the defect volume except in the transverse orientation, where a high defect volume reduced the quality of fusion between melt track layers.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9780438304956Subjects--Topical Terms:

561152
Engineering.
Subjects--Index Terms:

316L stainless steelIndex Terms--Genre/Form:

554714
Electronic books.

Material Properties of Laser Powder Bed Fusion Processed 316L Stainless Steel.
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500 $a Source: Masters Abstracts International, Volume: 80-03.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Sudhakar, KV.
502 $a Thesis (M.S.)--Montana Tech of The University of Montana, 2018.
504 $a Includes bibliographical references
520 $a Laser powder bed fusion additive manufactured 316L stainless steel specimens were evaluated to establish a baseline for future research in determining an optimized energy density and build orientation. Test specimens were printed at various energy densities. At each energy density, tensile and fatigue specimens were printed at 0° (longitudinal), 45°, and 90° (transverse) orientation to the build plate. Tensile and high cycle fatigue tests were performed then representative fracture surfaces were analyzed. The apparent melt track and dendrite size were evaluated using grain analysis software. Static loading of the tensile specimens showed a marginal difference in UTS for specimens with a longitudinal and 45° orientation to the build plate. The transverse orientation was more variable due to the UTS response to the quality of fusion between melt track layers. The energy density affected the fatigue as well. Typically, the medium energy density had the most consistent behavior. Fractography revealed a relationship between energy density and melt track fusion. The optimum energy density in this study was determined to be 100 J/mm 3, based on the highest transverse UTS, highest fatigue limit, moderate ductility, and moderate volume of lack of fusion defects. Specimens fabricated at a lower energy density had insufficient heat input to achieve good fusion which reduced the transverse UTS, ductility, and fatigue limit. The highest energy density was excessive energy density leading to an increase in defects reducing the transverse UTS and fatigue limit. The UTS was not strongly affected by the defect volume except in the transverse orientation, where a high defect volume reduced the quality of fusion between melt track layers.
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650 4 $a Materials science. $3 557839
653 $a 316L stainless steel
653 $a Additive manufacturing
653 $a Fractography
653 $a Laser powder bed fusion
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