Mechanical properties of TiB particulate reinforced Ti2AlNb intermetallics produced by prealloyed powder metallurgy method

被引：2

作者：

Emura, S ^{[1
]}

Hagiwara, M ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY | 2001年 / 16卷 / 1-3期

关键词：

orthorhombic; intermetallics; particulate composite; prealloyed powder metallurgy; tensile strength; creep;

D O I：

10.1504/IJMPT.2001.005401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti2AlNb intermetallics, based on the orthorhombic (O) phase, have a higher strength-to-density ratio and better high-temperature ductility than conventional titanium aluminides, such as TiAl and Ti3Al. in this study, TiB particulate-reinforced Ti2AlNb intermetallic alloy was prepared using the prealloyed powder metallurgy method. Ti-23.5Al-25.3Nb (mol%) spherical powder (under 150 mum) with 6.5mass% TiB particulate was produced by the Ar gas atomizing process. The powder was poured into a steel can until full, compacted by hot isostatic pressing (HIP), rolled into a bar and heat-treated. Microstructural observation, high- temperature tensile testing and creep testing were performed, and the results were compared to those of an unreinforced matrix.

引用

页码：103 / 108

页数：6

共 14 条

[1] Role of matrix microstructure on: Room-temperature tensile properties and fiber-strength utilization of an orthorhombic Ti-alloy-based composite [J].