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Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing./
Author:	Clark, Edward.
Description:	1 online resource (81 pages)
Notes:	Source: Masters Abstracts International, Volume: 56-04.
Subject:	Materials science. -
Online resource:	click for full text (PQDT)
ISBN:	9781369752489

Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing.
Clark, Edward.

Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing. - 1 online resource (81 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)--University of Denver, 2017.

Includes bibliographical references

Powder-based metal in additive manufacturing (AM) is advantageous for rapid prototyping of parts and components, with the benefit of reusing powder to reduce production costs. A common driver in the aerospace industry is free-form complex geometries which can be created using CAD software to optimize specifications with strength-to-weight ratios in components. Weight optimization of aircraft components using additive manufacturing reduces material, which significantly reduces production cost in comparison to cast and wrought metallic products. Large biomedical and aerospace industries heavily invest in feedstock metal powders that have low density under structural stresses and high temperatures, resulting in superior resistance to corrosion in extreme environments. The high strength-to-weight ratio material with long- term cost affordability obtained by AM process results in cost-efficiency of the Ti-6Al- 4V powder by recycling unspent powder material. However, while efficient, the recycling of titanium (Ti) powder in additive manufacturing results in micro-particle characterization, chemical, and mechanical changes due to indirect and direct environmental extremes. Direct exposure to high thermal heat during the electron beam melting (EBM) process after powder reclaiming can result in particle microstructure and chemical variations. Initial assessments of oxygen (O) wt% in bulk powder material was subsequently selected for further investigation as a characteristic for decline in mechanical properties of consolidated materials. A preliminary analysis of virgin, 5x-recycled, and artificially highly oxidized Ti-6Al-4V powder was conducted using Charpy impact testing on consolidated specimens from each wt% O in the bulk powder batches, and finite elemental analysis (FEA) to understand the build defect effect found in solidified Ti-6Al-4V material.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369752489Subjects--Topical Terms:

557839
Materials science.
Index Terms--Genre/Form:

554714
Electronic books.

Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing.
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245 1 0 $a Variable Oxidation and Defects in Ti-6Al-4V Material in Electron Beam Melting Additive Manufacturing.
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500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Adviser: Maciej Kumosa.
502 $a Thesis (M.S.)--University of Denver, 2017.
504 $a Includes bibliographical references
520 $a Powder-based metal in additive manufacturing (AM) is advantageous for rapid prototyping of parts and components, with the benefit of reusing powder to reduce production costs. A common driver in the aerospace industry is free-form complex geometries which can be created using CAD software to optimize specifications with strength-to-weight ratios in components. Weight optimization of aircraft components using additive manufacturing reduces material, which significantly reduces production cost in comparison to cast and wrought metallic products. Large biomedical and aerospace industries heavily invest in feedstock metal powders that have low density under structural stresses and high temperatures, resulting in superior resistance to corrosion in extreme environments. The high strength-to-weight ratio material with long- term cost affordability obtained by AM process results in cost-efficiency of the Ti-6Al- 4V powder by recycling unspent powder material. However, while efficient, the recycling of titanium (Ti) powder in additive manufacturing results in micro-particle characterization, chemical, and mechanical changes due to indirect and direct environmental extremes. Direct exposure to high thermal heat during the electron beam melting (EBM) process after powder reclaiming can result in particle microstructure and chemical variations. Initial assessments of oxygen (O) wt% in bulk powder material was subsequently selected for further investigation as a characteristic for decline in mechanical properties of consolidated materials. A preliminary analysis of virgin, 5x-recycled, and artificially highly oxidized Ti-6Al-4V powder was conducted using Charpy impact testing on consolidated specimens from each wt% O in the bulk powder batches, and finite elemental analysis (FEA) to understand the build defect effect found in solidified Ti-6Al-4V material.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Materials science. $3 557839
650 4 $a Mechanical engineering. $3 557493
655 7 $a Electronic books. $2 local $3 554714
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690 $a 0548
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Denver. $b Mechanical Engineering. $3 1182159
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