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Metallographic Characterization of Additive-Layer Manufactured Products by Electron Beam Melting of Ti-6Al-4V Powder

  • Lawrence E. Murr , Sara M. Gaytan , Maria I. Lopez , Edwin Martinez , Francisco Medina und Ryan B. Wicker
Veröffentlicht/Copyright: 5. Mai 2013
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Practical Metallography
Aus der Zeitschrift Practical Metallography Band 46 Heft 9

Abstract

Optical metallography and electron metallography (SEM and TEM) techniques are applied to the characterization of additive-layer manufactured products and prototypes by electron beam melting (EBM) of Ti-6Al-4V atomized precursor powder. In addition, microstructure-property comparisons are made by hardness and tensile test measurements which demonstrate prospects for controlled property-performance variations by varying process parameters including temperature profiles and cooling rates in manufactured prototypes.

Kurzfassung

Verfahren wie optische Metallographie und Elektronenmetallographie (REM und TEM) werden für die Charakterisierung von Halbzeugen mit Additivschichten und Prototypen durch Elektronenstrahlschmelzen (EBM) aus verdüstem Ti-6Al-4V-Ausgangspulver angewendet. Zusätzlich wurden Vergleiche der Gefügeeigenschaften durch Härte- und Dehnungsmessungen durchgeführt, die Aussichten für kontrollierte Varianten des Eigenschafts-Nutzeffekts durch Veränderung von Prozessparametern einschließlich Temperaturprofilen und Kühlraten in den hergestellten Prototypen zeigen.

a Lawrence E. Murr,

Lawrence E. Murr is Murchison Professor and Chairman of the Department of Metallurgical and Materials Engineering at the University of Texas at El Paso (UTEP). He holds a Ph.D. degree in solid state science from Penn State. His research interests include materials characterization, shock and high-strain-rate deformation studies, advanced materials and processes — including layered manufacturing, and atmospheric nano-particulate studies.

Sara M. Gaytan is a Graduate Research Assistant in the Department of Metallurgical and Materials Engineering at the University of Texas at El Paso where she is pursuing a Master of Science degree. Her research interests include a wide range of materials characterization, including advanced layered manufacturing technologies which is the subject of her master's thesis. She holds a B.S. degree in Metallurgical and Materials Engineering from UTEP.

References/Literatur

[1] Chuna, C. K.; Leong, K. F.; Lim, C. S.: Rapid Prototyping: Principles and Applications, 2nd Edition; World Scientific; Singapore (2003).10.1142/5064Suche in Google Scholar

[2] Hiemenz, J.: Electron beam melting. Adv. Mater. Processes165 (2007) 45–46.Suche in Google Scholar

[3] Murr, L. E.; Esquivel, E. V.; Quinones, S. A.; Gaytan, S. M.; Lopez, M.I.; Martinez, E. Y.; Medina, F.; Hernandez, D. H.; Martinez, E.; Martinez, J. L.; Stafford, S. W.; Brown, D. K.; Hoppe, T.; Meyers, W.; Lindhe, U.; Wicker, R. B.: Microstructures and mechanical properties of electron beam-rapid manufactured Ti-6Al-4V. Mater. Character. In press (2009).10.1016/j.matchar.2008.07.006Suche in Google Scholar

[4] Vander Voort, G. F.: Applied Metallography, Springer, Berlin (1987).Suche in Google Scholar

[5] Vander VoortG.F.: Metallography: Principles and Practice, ASM International, Materials Park, OH (1999).Suche in Google Scholar

[6] Murr, L. E.; Quinones, S. A.; Gaytan, S. M.; Lopez, M. I.; Rodela, A.; Martinez, E. Y.; Hernandez, D. H.; Martinez, E.; Medina, F.; Wicker, R. B.: Microstructure and mechanical behavior of Ti-6Al-4V produced by rapid-layer manufacturing, for biomedical applications. J. Mech. Behavior of Biomed. Materials2 (2009) 20–32.10.1016/j.jmbbm.2008.05.004Suche in Google Scholar PubMed

Received: 2009-1-15
Accepted: 2009-1-28
Published Online: 2013-05-05
Published in Print: 2009-09-01

© 2009, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Inhalt / Contents
  3. Technical Contributions/Fachbeiträge
  4. Metallographic Characterization of Additive-Layer Manufactured Products by Electron Beam Melting of Ti-6Al-4V Powder
  5. A Comparison of Grain Quantitative Evaluation Performed with Standard Method of Imaging with Light Microscopy and EBSD Analysis
  6. Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
  7. Co-site Microscopy: Case Studies
https://doi.org/10.3139/147.110036

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Inhalt / Contents
  3. Technical Contributions/Fachbeiträge
  4. Metallographic Characterization of Additive-Layer Manufactured Products by Electron Beam Melting of Ti-6Al-4V Powder
  5. A Comparison of Grain Quantitative Evaluation Performed with Standard Method of Imaging with Light Microscopy and EBSD Analysis
  6. Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
  7. Co-site Microscopy: Case Studies
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