| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Additive Manufacturing of Titanium – Boron Carbide In-situ Composites |
| Author(s) |
Mohan Sai Kiran Kumar Yadav Nartu, Srinivas Aditya Mantri, Thomas W. Scharf, Narendra Dahotre, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Mohan Sai Kiran Kumar Yadav Nartu |
| Abstract Scope |
The present study will focus on detailed microstructural characterization and holistic understanding of the sequence of formation of ceramic phases in Laser engineered net shaping (LENS) processing of in situ Ti-B4C composites for high loading fractions, i.e., 25 wt.% and 35 wt.% B4C. Though, both in-situ composites, Ti-25wt.%B4C and Ti-35wt.%B4C were similarly processed via LENS, their as-processed microstructures were drastically different. Ti-25wt.%B4C exhibited nearly homogeneous microstructure, mainly dominated by TiB, TiC and α-Ti phases. Ti-35wt.% B4C exhibited alternatively-repeating layered microstructure with TiB2 and TiC phases in one layer, and TiB and TiC phases with a small fraction of retained-B4C and α-Ti in another layer. Heipel-Roper theory of weld pool dynamics has been employed to rationalize the mechanism underlying the evolution of these layered composites. Further, results from the hardness, wear and compression tests performed, indicate the potential for the AM processed Ti-B4C composites as wear and abrasion resistant materials. |