MICROSTRUCTURE AND MECHANICAL CHARACTERISATION OF TIAL COATED ON Ti64

In this study, TiAl alloy was coated on Ti64 using a 1074nm high power continuous-wave laser while varying the laser beam scanning speed. This was done in order to increase the thermo-mechanical properties of Ti64. Scanning electron microscopy (SEM), light optical microscopy, and Vickers' micro...

Full description

Saved in:
Bibliographic Details
Published in:South African journal of industrial engineering 2017-11, Vol.28 (3), p.172-177
Main Authors: Masina, Bathusile, Lengopeng, Thabo, Pityana, Sisa, Tlotleng, Monnamme
Format: Article
Language:English
Subjects:
beam scanning speed
Dendritic structure
Diamond pyramid hardness
Electron microscopy
Engineering, Industrial
Feasibility studies
Hardness
laser
Laser beams
Lasers
Macrostructure
Mechanical properties
Microstructure
Optical microscopy
Optical properties
Oxidation
Scanning electron microscopy
Thermomechanical properties
ti64
tial
tial alloy
Titanium base alloys
Widmanstatten structure
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, TiAl alloy was coated on Ti64 using a 1074nm high power continuous-wave laser while varying the laser beam scanning speed. This was done in order to increase the thermo-mechanical properties of Ti64. Scanning electron microscopy (SEM), light optical microscopy, and Vickers' micro-hardness were used to characterise the clad for macrostructure, composition, and hardness respectively. The macro- and micrographs of the clads indicated a needle- and dendritic-rich structure for the clads and widmanstatten structure at the interface for all the scanning speeds. The overall hardness was found to be high at low scanning speed.
ISSN:2224-7890
1012-277X
2224-7890
DOI:10.7166/28-3-1854