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Microstructure Evaluation and Mechanical Testing of Ti6Al4v Overlap Samples Manufactured by Dual-Laser Slm.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Microstructure Evaluation and Mechanical Testing of Ti6Al4v Overlap Samples Manufactured by Dual-Laser Slm./
Author:	Gill, Harjeet.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	63 p.
Notes:	Source: Masters Abstracts International, Volume: 83-06.
Contained By:	Masters Abstracts International83-06.
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28715532
ISBN:	9798496563871

Microstructure Evaluation and Mechanical Testing of Ti6Al4v Overlap Samples Manufactured by Dual-Laser Slm.
Gill, Harjeet.

Microstructure Evaluation and Mechanical Testing of Ti6Al4v Overlap Samples Manufactured by Dual-Laser Slm. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 63 p.

Source: Masters Abstracts International, Volume: 83-06.

Thesis (M.S.)--California State University, Sacramento, 2021.

This item must not be sold to any third party vendors.

Multi-laser selective laser melting (ML-SLM) is an emerging additive manufacturing technology, and it can rapidly fabricate large and complex parts. The published research on this subject is useful in optimizing the ML-SLM process. However, further research is necessary to understand the characteristics of parts formed using two or more lasers. In this study, the dual-laser (misaligned) and the single-laser Ti6Al4V SLM samples provided by DMG Mori were analyzed and compared with the annealed Ti6Al4V round bar samples for defect characteristics, porosity, and mechanical properties. It was demonstrated that the largest defect for the dual-laser (misaligned) samples is ~60 times larger than the largest defect for the single-laser samples. The average porosity of about 2.5% for dual-laser (misaligned) samples resulted in a loss of the tensile strength, the modulus of elasticity, and ductility by 81%, 42%, and 88% respectively in comparison to the single-laser samples. The hardness values for the single-laser samples are 63% higher than dual-laser (misaligned) samples. It was concluded that processing defects during manufacturing can have a hugely detrimental effect on the microstructure and mechanical properties of the finished parts.

ISBN: 9798496563871Subjects--Topical Terms:

557493
Mechanical engineering.
Subjects--Index Terms:

Multi-laser powder bed fusion

Microstructure Evaluation and Mechanical Testing of Ti6Al4v Overlap Samples Manufactured by Dual-Laser Slm.
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300 $a 63 p.
500 $a Source: Masters Abstracts International, Volume: 83-06.
500 $a Advisor: Meier, Alan.
502 $a Thesis (M.S.)--California State University, Sacramento, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Multi-laser selective laser melting (ML-SLM) is an emerging additive manufacturing technology, and it can rapidly fabricate large and complex parts. The published research on this subject is useful in optimizing the ML-SLM process. However, further research is necessary to understand the characteristics of parts formed using two or more lasers. In this study, the dual-laser (misaligned) and the single-laser Ti6Al4V SLM samples provided by DMG Mori were analyzed and compared with the annealed Ti6Al4V round bar samples for defect characteristics, porosity, and mechanical properties. It was demonstrated that the largest defect for the dual-laser (misaligned) samples is ~60 times larger than the largest defect for the single-laser samples. The average porosity of about 2.5% for dual-laser (misaligned) samples resulted in a loss of the tensile strength, the modulus of elasticity, and ductility by 81%, 42%, and 88% respectively in comparison to the single-laser samples. The hardness values for the single-laser samples are 63% higher than dual-laser (misaligned) samples. It was concluded that processing defects during manufacturing can have a hugely detrimental effect on the microstructure and mechanical properties of the finished parts.
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653 $a Selective laser melting
653 $a Ti6Al4V
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