Solution strengthening of ductile refractory HfMo x NbTaTiZr high-entropy alloys
| Autor: | Ming-Hung Tsai, Jien-Wei Yeh, Ko-Kai Tseng, Che-Wei Tsai, Chun-Ming Lin, Swe-Kai Chen, Chien-Chang Juan, Su-Jien Lin, Wei-Lin Hsu |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Diffraction Materials science Scanning electron microscope Mechanical Engineering High entropy alloys Metallurgy Alloy 02 engineering and technology Crystal structure engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Solid solution strengthening Mechanics of Materials Lattice (order) 0103 physical sciences engineering General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Materials Letters. 175:284-287 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2016.03.133 |
| Popis: | The crystal structure, microstructure, and mechanical properties of HfMoxNbTaTiZr (x≤1) alloys were investigated by X-ray diffraction, scanning electron microscopy, and compression testing. All the as-solidified HfMoxNbTaTiZr alloys possess a simple body-centered cubic structure. Lattice parameters of the HfMoxNbTaTiZr alloys decrease with an increase in Mo concentration, but the corresponding densities show an opposite trend. The yield strength of the HfMoxNbTaTiZr alloys increases from 1015 MPa to 1512 MPa as x increases from 0 to 1. The solid solution strengthening is linearly proportional to a Mo concentration suggesting that the strengthening effect from each Mo atom is additive. Except for the HfMoNbTaTiZr alloy, HfMoxNbTaTiZr (x 50%). The material with x=0.75 is a new ductile refractory high-entropy alloy with promising mechanical properties. |
| Databáze: | OpenAIRE |
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