Mechanical properties of TiB particulate reinforced Ti2A1Nb intermetallics produced by prealloyed powder metallurgy method
Source: International Journal of Materials and Product Technology, Volume 16, Numbers 1-2, 1 October 2004 , pp. 103-108(6)
Publisher: Inderscience Publishers
Abstract:Ti2A1Nb 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 TiAI and Ti33A1. In this study, TiB particulate‐reinforced Ti2A1Nb intermetallic alloy was prepared using the prealloyed powder metallurgy method. Ti‐23.5A1‐25.3Nb (mol%) spherical powder (under 150 µm) 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.
Document Type: Research Article
Affiliations: 1: National Research Institute for Metals, 1-2-1 Sengen, Tsukuba-city, Ibaraki 305-0047, Japan. 2: National Research Institute for Metals, 1-2-1 Sengen, Tsukuba-city, Ibaraki 305-0047, Japan
Publication date: October 1, 2004
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