Ti-based alloys are widely used in biomaterials owing to their excellent biocompatibility. In this study, Ti- Mn-Cu alloys are prepared by high-energy ball milling, magnetic pulsed compaction, and pressureless sintering. The microstructure and microhardness of the Ti-Mn-Cu alloys with variation of the Cu addition and compaction pressure are analyzed. The correlation between the composition, compaction pressure, and density is investigated by measuring the green density and sintered density for samples with different compositions, subjected to various compaction pressures. For all compositions, it is confirmed that the green density increases proportionally as the compaction pressure increases, but the sintered density decreases owing to gas formation from the pyrolysis of TiH2 powders and reduction of oxides on the surface of the starting powders during the sintering process. In addition, an increase in the amount of Cu addition changes the volume fractions of the α-Ti and β-Ti phases, and the microstructure of the alloys with different compositions also changes. It is demonstrated that these changes in the phase volume fraction and microstructure are closely related to the mechanical properties of the Ti-Mn-Cu alloys.

Abstract
1. 서 론
2. 실험방법
3. 결과 및 고찰
4. 결 론
References

• 윤예준(서울과학기술대학교 신소재공학과) | Ye Jun Yun (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
• 박천웅(한양대학교 신소재공학과) | Chun Woong Park (Department of Materials Science and Engineering, Hanyang University)
• 최원준(한양대학교 신소재공학과) | Won June Choi (Department of Materials Science and Engineering, Hanyang University)
• 변종민(서울과학기술대학교 신소재공학과/서울과학기술대학교 분말기술연구소) | Jongmin Byun (Department of Materials Science and Engineering, Seoul National University of Science and Technology/The Institute of Powder Technology, Seoul National University of Science and Technology) Corresponding Author