Texture evolution and mechanical behavior of commercially pure Ti processed via pulsed electric current treatment
| Autor: | Z. Q. Fu, Yang Caigui, Y. F. Ding, Fei Chen, Yueying Li, Wen Zhang, J. A. Lin, Enrique J. Lavernia |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Fabrication Materials science Mechanical Engineering Metallurgy Spark plasma sintering 02 engineering and technology Plasticity 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Grain size Atomic diffusion Mechanics of Materials 0103 physical sciences General Materials Science Electric current Composite material 0210 nano-technology Tensile testing |
| Zdroj: | Journal of Materials Science. 51:10608-10619 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-016-0282-0 |
| Popis: | Spark plasma sintering is commonly utilized as a powder consolidation approach to fabricate high-performance ultrafine-grained bulk materials. In this study, a pulsed electric current, generated via spark plasma sintering, was applied to hot-rolled CP-Ti TA1 in order to study the influence on the α↔β allotropic transformation. Results show that an increased grain size of the α-Ti phase, together with a weakened texture, is accompanied by the increased plastic strain in the as-treated TA1 with increasing pulsed electric current intensity. The microstructure and texture changes are attributed to an enhancement in long-range atomic diffusion induced by the pulsed electric current intensity. Concomitantly, the increased plastic strain results from an increase in the number of active slip systems along the direction of the tensile test induced by the weakened texture of the {0001} pole figures and the trend of turning to the direction of the tensile test for the orientation index $$ \left\langle {10\overline{1} 0} \right\rangle $$ in pole figures. The results obtained herein provide an alternative pathway for the fabrication of high-performance metallic materials. |
| Databáze: | OpenAIRE |
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