Direct Powder Roll Compaction of α- β Titanium Alloys with Al, V, and Fe
Date
2022-08-12
Authors
Clemens, Shannon Cathleen
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Abstract
Compared to other metals, titanium has good corrosion and oxidation resistance,
strength-weight ratio, and retains strength at relatively high temperatures. Despite
being an excellent engineering material, its cost of production using the traditional
methods is prohibitive. This work explores direct powder rolling (DPR) as an
alternative production method for two titanium alloys with target compositions of Ti 6Al-4V and Ti-5Al-2.5Fe, using low-cost Ti powder.
Grain size, composition, and oxygen content were determined to be the most
influential factors in determining the mechanical properties of the strip which
negatively impacted the ability to conclusively compare effects of the rolling path
variations. DPR was used to create near full density strips with tensile and hardness
properties comparable to the wrought Ti-6Al-4V counterparts cold rolled via the same
roll path. With further development, DPR has the potential to produce titanium strip
while being more cost effective and less energy intensive than the current methods.
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Keywords
Titanium, Powder Metallurgy, Direct Roll Compaction, Ti-6Al-4V, Ti-5Al-2.5Fe, Aluminium, Iron, Vanadium, Cold Rolling, Sintering