Research on sintered behavior and structure performance of Ti-NdAl alloy for powder metallurgy

被引:0
作者
Tang, HP [1 ]
Liu, Y
Huang, BY
Liu, HY
Huang, YP
机构
[1] NW Inst Nonferrous Met Res, State Key Lab Powerder Met, Xian 710016, Peoples R China
[2] Cent S Univ, State Key Lab Power Met, Changsha 410083, Peoples R China
关键词
powder metallurgy; densification; titanium alloy; rare earth element;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The densification behaviors and mechanical performance of sintered Ti-NdAl alloy for powder metallurgy are researched by elements blend method. It is shown that liquid phase in emerges Ti-NdAl alloy for powder metallurgy due to the existence of lanthanon neodymium; at the same time, there is the purification of lanthanon neodymium with the oxygen on the surface of titanium powder, thus promoting the densification process of powder titanium, and the sintered density reaches above 99%. Microstructure analysis indicates that sintered Ti-NdAl alloys consist of single phase a, and the crystal grains get refined with the increase of neodymium content, Samples of the sintered alloy exist growth twins. Mechanical performance of Ti-NdAl alloy at room temperature shows that, with the increase of neodymium content, the tension intensities of Ti-NdAl alloy at room temperature remain the same, yet the plasticity gets great improvement. The intensity of Ti-1.6wt%Nd 0.4%Al alloy is 728 MPa and its prolongation rate 15%.
引用
收藏
页码:1270 / 1273
页数:4
相关论文
共 2 条
[1]  
MURRAY JL, 1987, PHASE DIAGRAMS BINAR, V345, P698
[2]  
TAO CH, 2002, FAILURE PREVENTION A, P4