Laser assisted fabrication of mechanochemically robust Ti3Au intermetallic at Au-Ti interface

• DOI: 10.1016/j.jestch.2023.101413
• Publication Date: 2023-04-21T11:57:51Z
• Authors: Oktawian Bialas; Augustine N.S. Ap...; Marta Wala; Anil Kunwar; Anna Woźniak; Paweł M. Nuckowski; Wojciech Simka; Peter Råback; Marcin Adamiak
• Keywords: Energy-dispersive X-ray spectroscopy

Intermetallics such as Ti3Au are characterised by improved mechanical properties and reduced susceptibility to corrosion. This study extensively blends the techniques of process simulation finite element analysis, light microscopy, scanning electron energy dispersive spectroscopy structural roentgenography analysis investigate interfacial intermetallics (IMC) in Au-Ti system. Ti was electrochemically coated with a micrometric layer gold then laser-treated wide range parameters. Variability included both laser beam power feed rate. The experimental results confirm that formation an intermetallic phase is possible. Finite method employed numerically estimate transient temperature values at interface during treatment. At 100 W scan speed 1.5 mm/s, reached magnitude larger than melting point for duration less 5.0 ms. decrease 1.0 mm/s constant P, increased this up 97.0 ms where provided sufficient convection-based reaction interface. Through nanoscale molecular dynamics simulation, it has been revealed nanoindentation, Au atoms IMC exert resistance force indenter compared pure material. material not only offers more robust response indentation but also exhibits superiority over corrosion test.