Microstructure and Mechanical Properties of Biomedical Ti2448 Alloy Prepared by Powder Metallurgy
The Ti2448 alloy with nominal composition of Ti-24Nb-4Zr-8Sn(wt.%)is prepared by powder metallurgy using elemental metal powder.The relative density of green compacts(76~85%)increases with pressure.The green compacts are sintered at different temperatures and the relative density of sintered(95.7~96.6%)increases with sintering temperature.Microstructure observations reveal the existence of β-matrix phase and α-precipitation phase.The alloys sintered at 1300/1400℃ for 4 h exhibit excellent mechanical properties,including a high strength(840~900 MPa)and a low elastic modulus(~65.78 Gpa).The Ti2448 alloy microstructure becomes more homogeneous and contains more α phase with increasing sintering temperature.
powder metallurgy Ti2448 alloy high strength low elastic modulus
Li Xia Yu Peng
Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China
国际会议
北京
英文
302-307
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）