Title

A Microstructure and Hardness Study of Functionally Graded Materials Ti6Al4V/TiC by Laser Metal Deposition

Alternative Title

The Microstructure, Hardness and Stiffness Study of Functionally Graded Materials Ti6Al4V/TiC by Laser Metal Deposition

Abstract

Crack free functionally graded material (FGM) Ti6Al4V-TiC has been fabricated by laser metal deposition (LMD) using TiC and Ti6Al4V powder which were premixed for different ratios. This study focuses on the influence of laser processing parameters and TiC compositional distribution on microstructure, Vickers hardness and phase. The microstructure is analyzed by scanning electron microscopy (SEM), x-ray diffraction (XRD) and hardness tests. Primary carbide, eutectic carbide and unmelted carbide are found in the deposit area. When laser power increased, the primary and secondary dendrite arm spacing increased. The laser power and scanning speed did not influence the Vickers hardness distribution significantly.

Meeting Name

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

Department(s)

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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