Consolidation Process in Near Net Shape Manufacturing of Armstrong CP-Ti/Ti-6Al-4V Powders

Yukinori Yamamoto; Jim O. Kiggans; Michael B. Clark; Stephen D. Nunn; Adrian S. Sabau; William H. Peter

doi:10.4028/www.scientific.net/KEM.436.103

Paper Titles

The Electrolytic Production of Ti from a TiO₂ Feed (The DARPA Sponsored Program)
p.61

The FFC Cambridge Process for Production of Low Cost Titanium and Titanium Powders
p.75

High Temperature Electrolysis of Ti and its Alloys with a DC-ESR Unit
p.85

Electrochemical Production of Titanium from Oxycarbide Anodes
p.93

Consolidation Process in Near Net Shape Manufacturing of Armstrong CP-Ti/Ti-6Al-4V Powders
p.103

The Impact of Diffusion on Synthesis of High-Strength Titanium Alloys from Elemental Powder Blends
p.113

Investigation of Pressing and Sintering Processes of CP-Ti Powder Made by Armstrong Process
p.123

Microwave Sintering and Melting of Titanium Powder for Low-Cost Processing
p.131

Microwave Sintering of Titanium
p.141

HomeKey Engineering MaterialsKey Engineering Materials Vol. 436Consolidation Process in Near Net Shape...

Consolidation Process in Near Net Shape Manufacturing of Armstrong CP-Ti/Ti-6Al-4V Powders

Abstract:

This paper summarizes our recent efforts to develop the manufacturing technologies of consolidated net-shape components by using new low-cost commercially pure titanium (CP-Ti) and Ti-6Al-4V alloy powders made by the Armstrong process. Fabrication processes of net shape/ near net shape components, such as uniaxial die-pressing, cold isostatic pressing (CIP), sintering, roll compaction and stamping, have been evaluated. The press-and-sinter processing of the powders were systematically investigated in terms of theoretical density and microstructure as a function of time, pressure, and temperature. Up to 96.4% theoretical density has been achieved with the press-and-sinter technology. Tensile properties of the consolidated samples exhibit good ductility as well as equivalent yield/ultimate tensile strengths to those of fully consolidate materials, even with the presence of a certain amount of porosity. A consolidation model is also under development to interpret the powder deformation during processing. Net shape components made of the Armstrong powder can successfully be fabricated with clearer surface details by using press-and-sinter processing.

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Periodical:

Key Engineering Materials (Volume 436)

Pages:

103-111

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.436.103

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Online since:

May 2010

Authors:

Yukinori Yamamoto, Jim O. Kiggans, Michael B. Clark, Stephen D. Nunn, Adrian S. Sabau, William H. Peter

Keywords:

Armstrong Process, Commercial Pure Titanium (CP-Ti), Near-Net-Shape, Press, Sinter, Ti6Al4V

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