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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D O I：

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学科分类号：

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.

引用

页码：1370 / 1374

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