Title

Microstructure and Property of TiB-Reinforced Ti Alloy Composites by Laser Metal Deposition

Alternative Title

Microstructure and Property of TiB-reinforced Ti Alloy Composites by Laser Deposition with Gas Atomized Ti-6Al-4V 1.0B Powder

Abstract

TiB-reinforced Ti alloy composites have been laser deposited with pre-alloyed Ti-6Al4V-1B powder. The microstructure of the as-deposited and heat treated composites have been characterized in detail using scanning electron microscope (SEM). A homogeneous dispersion of needle-like TiB precipitates is formed in the Ti-6Al-4V α/β matrix. TiB precipitates promote formation of small near equaxed α/β grain after β annealing process. The micro-hardness of the laser deposited composites increase 20-30% with 5 vol. % TiB precipitates compared to unreinforced Ti-6Al-4V deposits.

Meeting Name

26th Annual International Solid FreeForm Fabrication Symposium (2015: Aug. 10-12, Austin, TX)

Department(s)

Mechanical and Aerospace Engineering

Second Department

Materials Science and Engineering

International Standard Serial Number (ISSN)

1053-2153

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 University of Texas at Austin -- Laboratory for Freeform Fabrication (LFF), All rights reserved.

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