Microstructure and properties of titanium alloy produced in the newly developed blended elemental powder metallurgy process

✍ Scribed by Takahiro Fujita; Atsushi Ogawa; Chiaki Ouchi; Hidenori Tajima

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 577 KB
• Volume: 213
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(96)10232-x

✦ Synopsis

A blended elemental titanium powder metallurgy process has been developed to offer low cost commercial products. The process employs hydride-dehydride (HDH) powders as well as Hunter sponge fines (SP) as raw materials. Mechanical properties of HDH products are comparable with those of SP products. A/Y-rich :~ +/? alloy SP-700 (Ti-4.5AI-3V-2Fe-2Mo) has been applied to the process and its products show superior properties over Ti-6A1-4V: high sinterability, fine microstructure, excellent mechanicaI properties and good cold workability. Additions of iron and molybdenum to the alloy contribute to the enhancement of sintering and microstructure refine a~ent, respectiveIy. Sintered SP-700 products have been applied to various commercial parts.