Strategy for managing both high strength and large ductility in structural materials–sequential nucleation of different deformation modes based on a concept of plaston
| Autor: | Jun-Ping Du, Kyosuke Kishida, Si Gao, Nobuhiro Tsuji, Haruyuki Inui, Yu Bai, Shigenobu Ogata, Isao Tanaka, Wenqi Mao, Ruixiao Zheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Structural material Materials science Mechanical Engineering Metals and Alloys Nucleation 02 engineering and technology Deformation (meteorology) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Condensed Matter::Materials Science Mechanics of Materials Diffusionless transformation 0103 physical sciences Metallic materials General Materials Science Composite material 0210 nano-technology Ductility Crystal twinning Excitation |
| Zdroj: | Scripta Materialia. 181:35-42 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2020.02.001 |
| Popis: | Based on recent findings in ultrafine grained metals, we proposed a strategy for overcoming the strength-ductility trade-off in structural metallic materials. Sequential nucleation of different deformation modes, such as unusual slip systems, deformation twinning, martensitic transformation, etc., would regenerate strain-hardening ability of the material, leading to high strength and large tensile ductility. For discussing the activation of different deformation modes in atomistic scales, the concept of plaston which considered local excitation of atoms under singular dynamic fields was proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect