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Porosity regrowth during heat treatment of hot isostatically pressed additively manufactured titanium components

Tammas-Williams, S, Withers, RI, Todd, I and Prangnell, PB (2016) Porosity regrowth during heat treatment of hot isostatically pressed additively manufactured titanium components. Scripta Materialia, 122. pp. 72-76. ISSN 1359-6462

Full text not available from this repository. Please see publisher or open access link below:
Open Access URL: https://doi.org/10.1016/j.scriptamat.2016.05.002 (Published version)

Abstract

X-ray computed tomography has been used to track the behaviour of individual pores found in selective electron beam melted additive manufactured titanium. Porosity was found to shrink below the detection limit of X-ray microtomography (< 5 μm) upon hot isostatic pressing. Spherical argon containing gas pores, which have a high internal gas pressure following hot isostatic pressing, have been found to progressively reappear and grow in proportion to their original as-built size during high temperature (β-anneal) treatments, whereas larger irregular low pressure pores did not reappear. The implications of these observations in terms of additive manufacturing are discussed.

Item Type: Article
Uncontrolled Keywords: 0912 Materials Engineering, 0913 Mechanical Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics. Nuclear engineering
T Technology > TP Chemical technology
Divisions: Maritime and Mechanical Engineering
Publisher: Elsevier
Related URLs:
Date Deposited: 11 Apr 2019 08:32
Last Modified: 11 Apr 2019 08:32
DOI or Identification number: 10.1016/j.scriptamat.2016.05.002
URI: http://researchonline.ljmu.ac.uk/id/eprint/10534

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