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Meeting Materials Science & Technology 2020
Symposium Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
Presentation Title The Role of Processing and Texture on the Dynamic Mechanical Behavior of Powder Metallurgy Processed Ti-6Al-4V
Author(s) James D. Paramore, Brady G. Butler, Matthew K. Dunstan, Hongjoo Rhee, Haitham El Kadiri , Wilburn Ray Whittington, Shiraz Mujahid
On-Site Speaker (Planned) James D. Paramore
Abstract Scope Hydrogen sintering and phase transformation (HSPT), a powder metallurgy process, has been previously shown to produce desirable microstructures in Ti-6Al-4V components with corresponding excellent static and fatigue tensile properties. In the current study, three microstructures produced by HSPT and one produced by traditional wrought processing were tested under compression at strain rates of 0.001, 0.1, and >1000 s<sup>-1</sup>. The wrought condition exhibited the best toughness at 0.001 s<sup>-1</sup>, but had the worst performance at both 0.1 and >1000 s<sup>-1</sup> strain rates. From microstructural analyses, it is shown that the wrought condition had strong crystallographic texture consistent with hot rolling above the β-transus temperature. It is proposed that this texture made the wrought material susceptible to relatively early-onset shear banding at all but the lowest strain rate. This texture does not form in the HSPT microstructures.


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Hot Isostatic Pressing of Niobium-based Refractory Alloy Powders
Influence of Powder Characteristics, Temperature and Cooling Rate on the Development of the Properties in Ni-Superalloys Processed Using Powder Hot Isostatic Pressing
The Role of Processing and Texture on the Dynamic Mechanical Behavior of Powder Metallurgy Processed Ti-6Al-4V

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