| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Microstructure and Mechanical Properties of Direct Laser Metal Deposited GRCop-84 Alloy |
| Author(s) |
Ajay Bhagavatam, Praveen Sreeramagiri, Asit Biswas, Dean Baker, Guru P. Dinda |
| On-Site Speaker (Planned) |
Ajay Bhagavatam |
| Abstract Scope |
In this study, dispersion strengthened GRCop-84 (Cu-8Cr-4Nb) alloy was successfully deposited without any defects using direct laser metal deposition. A diode laser with a spot size of 2 mm is used to deposit 30 mm x 10 mm single wall samples on a copper substrate. Scanning electron microscopy and electron dispersive spectroscopy investigation revealed the presence of dispersion particles Cr2Nb of 300 to 2000 nm in the copper matrix. In addition very fine Cr particles formed along the interdendritic regions of the copper matrix. It is also observed that these Cr2Nb precipitates are not formed, or the density of these particles is very less where there is segregation of Cr particles along the dendrite boundary. Tension test of the as-deposited samples displayed an average ultimate tensile strength of 410 MPa with 13 % elongation. This paper also reveals the effect of Cr addition on the development of unique eutectic microstructure |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |