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《Powder Metallurgy Industry》 2017-05
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High velocity compaction behavior and sintered properties of Ti-29Nb-13Ta-4.6Zr alloy

HE Jie;XIAO Zhi-yu;YANG Shuo;GUAN Hang-jian;ZHANG Wen;National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology;  
The Ti-29 Nb-13 Ta-4.6 Zr powder was compacted with a self-developed high velocity compaction machine. The effect of impact energy on density as well as mechanical properties was investigated. The results reveal that the green density increases with increasing impact energy,the green density reaches a maximum of 5.63 g/cm~3(relative density of 94.1%)with impact energy of 1 805 J. The radial spring back of the samples increase with increasing impact energy. After sintered in vacuum at 1 250 ℃,the sintered density increases with the increase of impact energy while the volume of the sintered compacts expand and the sintered compacts obtain the maximum density of 5.53 g/cm~3(relative density of 92.5%). After sintered for 2.0 h in vacuum,the sintered compacts obtain the highest tensile strength of 629.8 MPa and the highest hardness of 324.5 HV.
【Fund】: 国家自然科学基金重大仪器项目(51627805);; 广东省重大科技专项资助项目(2014B010129003);; 广东省自然科学基金资助项目(2015A030312003);; 广州市科技计划项目(201604016049)
【CateGory Index】: TF125.22
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