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http://dx.doi.org/10.4150/KPMI.2021.28.5.403

Microstructures and Mechanical Properties of Ti-20Mo-0.5EB Composites  

Bae, Suhyun (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Jeong, Wonki (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Shin, Se-Eun (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Publication Information
Journal of Powder Materials / v.28, no.5, 2021 , pp. 403-409 More about this Journal
Abstract
In this study, Ti-Mo-EB composites are prepared by ball milling and spark plasma sintering (SPS) to obtain a low elastic modulus and high strength and to evaluate the microstructure and mechanical properties as a function of the process conditions. As the milling time and sintering temperature increased, Mo, as a β-Ti stabilizing element, diffused, and the microstructure of β-Ti increased. In addition, the size of the observed phase was small, so the modulus and hardness of α-Ti and β-Ti were measured using nanoindentation equipment. In both phases, as the milling time and sintering temperature increased, the modulus of elasticity decreased, and the hardness increased. After 12 h of milling, the specimen sintered at 1000℃ showed the lowest values of modulus of elasticity of 117.52 and 101.46 GPa for α-Ti and β-Ti, respectively, confirming that the values are lower compared to the that in previously reported studies.
Keywords
Composites; Microstructure; Mechanical properties; Ball-milling;
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