Eutectic composition titanium metal matrix composites for laser powder bed fusion via surface remelt analyses
Abstract
Ti-based metal matrix composites (MMCs) represent a material class with highly desired performance for the aerospace industry, but implementation has been hindered by poor processability. It is now being realised that MMCs can be formed in situ through the exploitation of rapid cooling rates of laser powder bed fusion, and targeting invariant reaction compositions to minimise the propensity for solidification cracking. We perform laser line scans and surface remelts of arc-melted Ti–0.38C, Ti–1.67B, Ti–8.5Si and Ti–32.5Fe wt-% eutectic compositions to assess potential material amenability to the laser powder bed fusion (LPBF) process at low cost as well as determining the nanostructure and hardness properties. The results indicate that MMCs are amenable to LPBF and may outperform conventional alloys.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 01, 2023
- Source ID
- 10.1080/02670836.2023.2178178
Entities
People
- Alison Wilson
- Dieter Isheim
- Howard J. Stone
- James Coakley
- Junyang Yu
- William R. Hixson
Organizations
- National Science Foundation
- Northwestern University
- University of Cambridge
- University of Miami