Preparation and Microstructure Characterization of Ti-Based Alloy (TiAl+Ti) by Hot-pressed Sintering

被引：0
|
作者：
Yu, Qiuying [1 ]
Fang, Shuang [1 ]
Xiong, Huaping [1 ]
Zhao, Hengyue [2 ]
Zhang, Mincong [1 ]
Wang, Shuyun [1 ]
机构：
[1] Laboratory of Welding and Forging, Beijing Institute of Aeronautical Materials, Beijing,100095, China
[2] Shenyang Aircraft Corporation, Shenyang,110013, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2017年 / 46卷 / 05期
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摘要：
TiAl strengthened Ti-based alloy was prepared by hot-pressed sintering of mixed powders of TiAl and Ti at 1473 K under a pressure of 30 MPa for 1.5 h. The effects of composition ratio on the phase constituent and microstructures of hot-pressed sintering products were subsequently analyzed by XRD and SEM. A large difference exists in the phase distribution for the sintering products with different composition ratios. The feasibility of TiAl reinforced Ti-based alloy is confirmed with TiAl/Ti volume ratio of 7:3. Element Fe is concentrated in Ti2Al and Ti3Al. TiAl, Ti2Al(Fe), Ti3Al(Fe) and Ti-based phases are mainly formed in the sintered product. Different types of diffusion reactions occur within the sintered body during hot-pressed sintering, and finally fine graded microstructures, Ti/Ti3Al(Fe)//Ti2Al(Fe)/TiAl, are formed. © 2017, Science Press. All right reserved.
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页码：1370 / 1374
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