Abstract
A crack-free cube was manufactured by depositing spherical GE Ti4822 alloy powder using a laser direct metal deposition technique. Tensile specimens were wire cut and tested for tensile properties. Three kinds of specimen were tested: the as-built and those that were heat treated in an argon rich environment at 1200 °C and 1400 °C and oven cooled. The results showed that the as-built samples had high UTS (440.68 MPa) and very poor elongation (0.11%) while samples that were heat treated at 1200 °C and 1400 °C had UTS of 382.95 MPa and 297.60 MPa, respectively. All samples lacked plasticity. This study concluded that a coarse-grained fully lamellar microstructure had low tensile strength which would suggest moderate toughness and ductility at room temperature.
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Acknowledgements
The authors wish to acknowledge the Council for Scientific and Industrial Research (CSIR) and the National Research Foundation for funding. My gratitude goes to Dr. Bathusile Masina and Mr. Nana Arthur for their continued support and assistance.
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Tlotleng, M., Skhosane, S., Pityana, S. (2020). Mechanical Properties of a Laser Deposited Spherical Ti4822 Alloy. In: Peng, Z., et al. 11th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36540-0_12
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DOI: https://doi.org/10.1007/978-3-030-36540-0_12
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