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Microstructure of As-cast Co-Cr-Mo Alloy Prepared by Investment Casting
- Source :
- Journal of the Korean Physical Society. 72:947-951
- Publication Year :
- 2018
- Publisher :
- Korean Physical Society, 2018.
-
Abstract
- The microstructure of a cobalt-base alloy (Co-Cr-Mo) obtained by an investment casting process was studied. This alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic implants owing to its high strength, good corrosion resistance, and excellent biocompatibility. This work focuses on the resulting microstructures arising from normal industrial environmental conditions. The characterization of the samples was carried out using optical microscopy, field emission scanning electron microscopy and energy-dispersive spectroscopy. In this study, the as-cast microstructure is an γ-Co (face-centered cubic) dendritic matrix with the presence of a secondary phase, such as M23C6 carbides precipitated at grain boundaries and interdendritic zones. These precipitates are the main strengthening mechanism in this type of alloy. Other minority phases, such as the σ phase, were also detected, and their presence could be linked to the manufacturing process and environment.
- Subjects :
- 010302 applied physics
Investment casting
Alloy
Metallurgy
technology, industry, and agriculture
General Physics and Astronomy
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Microstructure
01 natural sciences
Corrosion
Carbide
law.invention
Optical microscope
law
Phase (matter)
0103 physical sciences
engineering
Grain boundary
0210 nano-technology
Subjects
Details
- ISSN :
- 19768524 and 03744884
- Volume :
- 72
- Database :
- OpenAIRE
- Journal :
- Journal of the Korean Physical Society
- Accession number :
- edsair.doi...........7347b34b4c93259b74796bae8dbf08e5