Microstructure and Mechanical Properties of Ti-Nb-Zr Alloys Prepared by Spark Plasma Sintering
Biomedical Ti-24Nb-2Zr (at,%) alloy is prepared by powder metallurgy method including high energy mechanical milling and spark plasma sintering (SPS).Compact bulk specimens, with density equivalent to arc melted ones, are obtained after SPS for 10 min with sintering temperatures above 850 ℃.Higher temperature sintering promotes combination of raw element powders and diffusion of element, and results in a single β phase in the obtained specimens.Microhardness, compressive strength and plasticity increase with rising sintering temperatures.As the specimens are further heat treated at 850 ℃ for 1h, element distribution becomes much more uniformly together with releasing of internal stress and greater solution hardening.The bulk specimens, obtained by sintering at 1100 ℃ and 1200 ℃, shows higher strength and plasticity, which are suitable for biomedical applications.SPS technology can be used as a rapid fabrication method to prepare Ti alloy products.
Spark plasma sintering Titanium alloy Microhardness Compression
Qiang Li Guang-hao Ma Xu-yan Liu Zhi-kang Tu Deng Pan
School of Mechanical Engineering, University of Shanghai for Science and Technology,Shanghai 200093, School of Materials Science and Engineering, University of Shanghai for Science and Technology,Shang
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
136-142
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）