Application of a microstructural characterization uncertainty quantification framework to Widmanstätten α-laths in additive manufactured Ti-6Al-4V

Gregory T. Loughnane, Sarah L. Kuntz, Nathan Klingbeil, John M. Sosa, Jeff Irwin, Abdalla R. Nassar, Edward W. Reutzel

Research output: Contribution to conferencePaper

Abstract

This work applies statistical analysis and uncertainty quantification tools developed for characterizing virtual microstructures in three dimensions to a two-dimensional experimental investigation of Ti-6Al-4V Widmanstätten α-lath thicknesses obtained from back-scattered electron (BSE) or electron back-scatter diffraction (EBSD) images on two thin-walled samples manufactured via the LENS® process. The Materials Image Processing and Automated Reconstruction (MIPAR™) software optimizes unique recipes for conversion of the BSE or EBSD images to binary data, and subsequently computes the inverse of the linear intercept for each α-lath. Mean α-lath thicknesses and discrete probability density functions (PDFs) of inverse intercepts are used to make quantitative comparisons of α-lath structures at different heights throughout the thin walls. Real-time thermal data collected during the LENS® experiment is then compared to quantitative microstructural results in order to determine trends between α-lath structures, thermal gradients, and melt pool areas across experimental process parameters.

Original languageEnglish (US)
Pages647-663
Number of pages17
StatePublished - Jan 1 2020
Event26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2015 - Austin, United States
Duration: Aug 10 2015Aug 12 2015

Conference

Conference26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2015
CountryUnited States
CityAustin
Period8/10/158/12/15

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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    Loughnane, G. T., Kuntz, S. L., Klingbeil, N., Sosa, J. M., Irwin, J., Nassar, A. R., & Reutzel, E. W. (2020). Application of a microstructural characterization uncertainty quantification framework to Widmanstätten α-laths in additive manufactured Ti-6Al-4V. 647-663. Paper presented at 26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2015, Austin, United States.