Titanium-Tantalum Alloy Powder Produced by the Plasma Rotating Electrode Process (PREP)
| Autor: | Zheng Feng Li, Shao Yang Zhao, Ping Tan, Gang Chen, Jin Gou Yin, Hui Ping Tang, Jian Wang |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy Alloy Tantalum chemistry.chemical_element 02 engineering and technology Plasma engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences chemistry Mechanics of Materials Scientific method Martensite 0103 physical sciences Electrode engineering General Materials Science 0210 nano-technology Titanium |
| Zdroj: | Key Engineering Materials. 770:18-22 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.770.18 |
| Popis: | Microstructure of Ti-28Ta powders produced by plasma rotating electrode process (PREP) was investigated by using scanning electron microscopy (SEM), optical microscopy (OM), and transmission electronic microscopy (TEM). Phase constituent of the PREP Ti-28Ta powders was analyzed by X-ray diffraction (XRD). It was found that microstructure of the PREP Ti-28Ta powders was dependent on the powder particle sizes. Predominant martensitic α”, some metastable β and trace athermal ω phases were observed in the powders with the small diameter. While, phase constituent of the PREP Ti-28Ta powders with the large particle size was predominant metastable β, some martensitic α” and trace athermal ω. With the reduction of the powder particle size, the amount of martensitic α” increased and the metastable β decreased. The martensitic α” was formed preferentially on the metastable β grain boundaries of the PREP Ti-28Ta powders. The increase of α” phase and decrease of β with reduction of the powder particle size is attributed to the increase of the volume of the grain boundaries due to the grain refinement. |
| Databáze: | OpenAIRE |
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