| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-113: Investigation of Martensite α’ Phase Transformation during Heat Treatment of High Speed Selective Laser Melted Ti6Al4V Components |
| Author(s) |
Paul Masekuru Lekoadi, Nthabiseng Maledi, Monnamme Tlotleng, Bathusile Masina |
| On-Site Speaker (Planned) |
Paul Masekuru Lekoadi |
| Abstract Scope |
This study presents the investigation of heat treatment on microstructural and hardness properties of Ti6Al4V components produced by high speed selective laser melted (SLM). The heat treatments were performed in order to improve and homogenize the Ti6Al4V microstructure which influence the resultant hardness value. It was found that sub-transus temperatures of 700°C and 950°C does not completely transform the martensite α’ phase but results in a slight decrease in hardness. Heat treatment at 1000°C for 8 hours followed by furnace cooling transformed the martensitic α’ phase into lamella α+β microstructure, with a decrease in hardness. Furthermore, the relationship of hardness as a function of residence time was developed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |