In-situ Atomic-scale Deformation Mechanism of ultrafine Nanocrystalline Pt

超细纳米晶Pt的原位原子尺度变形机制

• 批准号: DE150101212
• 负责人: Dr Lihua Wang
• 金额: $ 24.84万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Early Career Researcher Award
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-06-28 至 2018-06-27
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DE150101212
• 关键词: situ; Atomic; scale; Deformation; Mechanism

Understanding the deformation of nanocrystalline (NC) metals is crucial for their practical application. So far, the deformation mechanism of ultrafine NC metals with grain size below 15 nanometre has been predicted by simulations which need to be verified experimentally. Using different in situ transmission electron microscopy deformation approaches, this project aims to determine deformation mechanisms of ultrafine NC platinum (Pt) at atomic-scale and to clarify how the deformation behaviour affects mechanical properties. The expected outcomes will advance the knowledge base in ultrafine NC metals and will provide guidance for developing advanced metallic materials with high strength/ductility that are the backbone for developing flexible and bendable devices.

了解纳米晶（NC）金属的变形对其实际应用至关重要。到目前为止，晶粒尺寸小于15纳米的超细数控金属的变形机制已经通过模拟预测，需要实验验证。使用不同的原位透射电子显微镜变形方法，该项目旨在确定原子尺度下超细NC铂（Pt）的变形机制，并阐明变形行为如何影响机械性能。预期成果将推进超细NC金属的知识基础，并为开发具有高强度/延展性的先进金属材料提供指导，这些材料是开发柔性和可弯曲器械的支柱。