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Finite-Element Modeling of Titanium Powder Densification

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Abstract

A powder-level, finite-element model is created to describe densification, as a function of applied stress during uniaxial hot pressing, of CP-Ti and Ti-6Al-4V powders with spherical or spheroidal shapes for various packing geometries. Two cases are considered: (1) isothermal densification (in the α- or β-fields of CP-Ti and in the β-field of Ti-6Al-4V) where power-law creep dominates and (2) thermal cycling densification (across the α/β-phase transformation of Ti-6Al-4V) where transformation mismatch plasticity controls deformation at low stresses. Reasonable agreement is achieved between numerical results and previously published experimental measurements and continuum modeling predictions.

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Acknowledgments

This research was supported by a grant from the Boeing Corporation. The authors thank Mr. L.C. Firth (The Boeing Company) for useful discussions. This article is dedicated to the memory of Dr. W.B. Crow (The Boeing Company) who made numerous important contributions to the current research.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA

    Bing Ye (Postdoctoral Fellow) & David C. Dunand (Professor)

  2. Boeing Research and Technology, The Boeing Company, Seattle, WA, 98124, USA

    Marc R. Matsen (Boeing Technical Fellow)

Authors
  1. Bing Ye
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  2. Marc R. Matsen
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  3. David C. Dunand
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Corresponding author

Correspondence to David C. Dunand.

Additional information

Manuscript submitted January 25, 2011.

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Ye, B., Matsen, M.R. & Dunand, D.C. Finite-Element Modeling of Titanium Powder Densification. Metall Mater Trans A 43, 381–390 (2012). https://doi.org/10.1007/s11661-011-0839-0

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