We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Evaluation of pore re-opening after HIP in LPBF Ti–6Al–4V.
- Authors
Kosonen, Topi; Kakko, K.; Raitanen, N.
- Abstract
Higher build rates in Laser Powder Bed Fusion (LPBF) process in combination with Hot Isostatic Pressing (HIP) have been proposed to reduce the cost-per-part of additive manufacturing. However, inert gas trapped in the pores could cause healed pores to re-grow after elevated temperature exposure. Therefore, understanding the possible effects of this pore re-opening phenomenon is crucial in maintaining quality of parts subjected to elevated temperatures during service. The aim of the present study was to investigate pore re-opening after HIP in Ti–6Al–4V parts by exposing samples to different elevated temperatures for varying times. The changes in the pore content were studied using microscopy and micro X-ray computed tomography in combination with gas content analysis. Based on the results, it was concluded that for typical service temperatures of Ti–6Al–4V, pore re-opening was minimal.
- Subjects
COMPUTED tomography; ISOSTATIC pressing; HIGH temperatures; HOT pressing; GAS analysis
- Publication
Powder Metallurgy, 2021, Vol 64, Issue 5, p425
- ISSN
0032-5899
- Publication type
Article
- DOI
10.1080/00325899.2021.1928997