TiB whiskers reinforced high temperature titanium Ti60 alloy composites with novel network microstructure

被引：90
作者：
Huang, L. J. [1 ]
Yang, F. Y. [1 ]
Hu, H. T. [1 ]
Rong, X. D. [1 ]
Geng, L. [1 ]
Wu, L. Z. [2 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150080, Peoples R China
来源：
MATERIALS & DESIGN | 2013年 / 51卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Titanium matrix composites; Microstructures; Mechanical properties; Powder metallurgy; Reaction hot pressing; Ti60; SITU TIBW/TI6AL4V COMPOSITE; MATRIX COMPOSITES; TENSILE PROPERTIES; MECHANICAL-PROPERTIES; HEAT-TREATMENT; CREEP; ARCHITECTURE; BEHAVIOR; PROPERTY; FIBER;
D O I：
10.1016/j.matdes.2013.04.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TiB whiskers reinforced high temperature titanium Ti60 alloy (TiBw/Ti60) composites with a novel network microstructure have been successfully fabricated by the system of large spherical Ti60 powders and fine TiB2 powders. The results show that the minimum temperature fabricating the composites by reaction hot pressing (RHP) is established to be 1300 degrees C due to usage of high temperature titanium Ti60 alloy. The TiB whiskers are in situ synthesized around large Ti60 matrix particles and then formed a novel three-dimensional (3D) network microstructure. The tensile strength of 8 vol.% TiBw/Ti60 composites with a network microstructure is increased by 61.1%, 57.4% and 45.5% compared with that of the monolithic Ti60 alloy at 600 degrees C, 700 degrees C and 800 degrees C, respectively. The superior improvement can be mainly attributed to the network microstructure, grain refinement and usage of large spherical Ti60 powders. (c) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：421 / 426
页数：6
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