| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
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| Presentation Title |
A Novel Direct Reduction and Alloying (DRA) Process for Making Titanium and Titanium Alloy Powder |
| Author(s) |
MD Emran Hossain, Pei Sun, Zhigang Zak Fang |
| On-Site Speaker (Planned) |
MD Emran Hossain |
| Abstract Scope |
Spherical titanium and titanium alloy powders are among the most demanding feed materials for additive manufacturing to produce near-net-shaped products. However, the high embodied energy of titanium and its alloy feed materials undermines the merits of energy saving in AM. Typically, spherical titanium and its alloy powders are produced through atomization from primary metal products, with primary titanium metal being produced via the conventional Kroll process. To date, no process has been developed to make spherical titanium and titanium alloy powder directly from raw oxides. Our research introduces a novel, energy-efficient pathway to produce spherical Ti-6Al-4V alloy powder directly from oxide mixtures by combining hydrogen-assisted magnesiothermic reduction (HAMR) and Granulation-Sintering and Deoxygenation (GSD) processes. The integrated process is termed the Direct Reduction and Alloying (DRA) process. Spherical Ti-6Al-4V alloy powders produced by this process exhibit low interstitial impurities, controlled particle size distribution, homogeneous compositions, and excellent flowability for AM applications. |