Fine-layered CP-Ti /Ti-6Al-4V composites by laser powder bed fusion

Author(s)

Sangali, M. ; Rodrigues, J. F. Q. ; Campo, K. N. ; Starck, L. F. ; Cremasco, A. ; Contieri, R. J. ; Caram, R.

• Document type: Journal article
• Source: VACUUM; v. 220, p. 6-pg., 2023-12-03.

Abstract

This work aimed to provide new insights into the manufacturing of a composite material composed of alternating micrometric layers of CP-Ti and Ti-6Al-4V, which was achieved using a modified laser powder bed fusion platform. Dense materials were obtained, and interface analysis revealed the formation of a solid solution intermixed region. Both CP-Ti and Ti-6Al-4V layers exhibited a hexagonal martensitic microstructure. Texture preservation between layers was observed, and it was attributed to epitaxy during the solidification process. The multi-layered material exhibited increased strength with higher volume fractions of Ti-6Al-4V. The composite materials exhibited a compressive yield strength ranging from 670 to 930 MPa, values that did not follow the simple rule of mixtures. (AU)

• FAPESP's process: 18/18293-8 - Titanium alloys: phase transformations and additive manufacturing applied to obtaining functionally graded materials
• Grantee: Rubens Caram Junior
• Support Opportunities: Research Projects - Thematic Grants