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- Title
Additive Manufacturing of γ-TiAl: Processing, Microstructure, and Properties.
- Authors
Balla, Vamsi Krishna; Das, Mitun; Mohammad, Ashfaq; Al‐Ahmari, Abdulrahman M.
- Abstract
Additive manufacturing of γ-TiAl intermetallic alloy using laser-engineered net shaping (LENS) is reported. The influence of laser power and scan speed on processability, microstructure, tribological, and electrochemical properties is studied. The results demonstrate that near net shape γ-TiAl parts can be fabricated using LENS and defect-free parts are obtained with narrow laser energy input range (40-50 Jmm-2). The high cooling rates result in massive-like γ matrix with small amount of γ+α-2 lamellar. Process parameters strongly influence tribological and electrochemical properties of LENS-processed g-TiAl parts in 3.5% NaCl solution. Wear is of abrasive type with no evidence of corrosion on wear tracks.
- Subjects
THREE-dimensional printing; ALLOYS; INTERMETALLIC compounds
- Publication
Advanced Engineering Materials, 2016, Vol 18, Issue 7, p1208
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201500588