Microstructure and mechanical properties of iron-containing titanium metal-metal composites

被引：8
|
作者：
Lin, Fangrui [1 ]
Chen, Zhixing [1 ]
Liu, Bin [1 ]
Liu, Yong [1 ]
Zhou, Chengshang [1 ]
机构：
[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2020年 / 90卷
基金：
国家杰出青年科学基金;
关键词：
Titanium-based composite; Powder metallurgy; Sintering; Rotary swaging; POWDER-METALLURGY; DENSIFICATION; INTERFACE; BEHAVIOR; SIZE;
D O I：
10.1016/j.ijrmhm.2020.105225
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Titanium-based metal-metal composites show promises in many applications. In this work, iron-containing titanium-based composites were fabricated by using powder metallurgy method and rotary swaging process. Titanium-based composites with steel addition were sintered at temperature below Ti-Fe eutectic temperature. Increase of the steel addition to 23% resulted in formation of Ti-Fe intermetallic and density decrease in the composites. Further, the as-sintered composites present relatively good workability so hot rotary swaging of the as-sintered composites can be conducted. Steel particles were diffused into the Ti matrix and the composite transformed to a discontinuous beta-Ti fiber-reinforced structure. As a result, mechanical properties (in axial direction) of the swaged composites were significantly improved. The tensile strength and elongation reached 1360 MPa and 9.3%, respectively.
引用
收藏
页数：6
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